Eghnayem v. Boston Scientific Corporation
Filing
244
MEMORANDUM OPINION AND ORDER (Daubert Motions) for the reasons explained herein, the defendant's 86 motion with respect to Dr. Trepeta is granted in part and denied in part. The defendant's 88 motion with respect to Dr. Margolis is gran ted in part and denied in part. The defendant's 90 motion with respect to Dr. Barker is granted. The defendant's 92 motion with respect to Drs. Mays and Gido is granted in part and denied in part. The defendant's 94 motion with r espect to Dr. Salom is denied. The defendant's 96 motion with respect to Dr. Pence is granted in part and denied in part. The defendant's 98 and 147 motions with regard to Dr. Slack are granted and denied, respectively. The defendant& #039;s 100 motion with respect to Dr. Raybon is granted in part and denied in part. The defendant's 102 motion with respect to Dr. Kiley is granted in part and denied in part. The defendant's 104 motion with regard to Dr. Iakovlev is granted in part and denied in part. The defendant's 109 motion with regard to Dr. Walmsley is denied in part and denied as moot. The defendant's 155 motion with respect to Dr. Pando is granted. The plaintiffs' 111 motion with reg ard to Dr. Spiegelberg is granted in part and reserved in part. The plaintiffs' 113 motion with respect to Dr. Badylak is granted in part and reserved in part. The plaintiff's 115 motion with regard to Dr. Davies is denied. The plaintiffs' 117 motion with regard to Dr. Brauer is granted. The plaintiffs' 119 motion with regard to Dr. Winn is granted. Signed by Judge Joseph R. Goodwin on 10/27/2014. (cc: attys; any unrepresented party) (skh)
IN THE UNITED STATES DISTRICT COURT
FOR THE SOUTHERN DISTRICT OF WEST VIRGINIA
CHARLESTON DIVISION
AMAL EGHNAYEM, et al.,
Plaintiffs,
v.
CIVIL ACTION NO. 2:13-cv-07965
BOSTON SCIENTIFIC CORPORATION,
Defendant.
MEMORANDUM OPINION AND ORDER
(Daubert Motions)
The following motions have been brought by the defendant, Boston Scientific
Corporation (“BSC”): (1) Motion to Exclude the Testimony of Richard W. Trepeta, M.D.
[Docket 86]; (2) Motion to Exclude the Testimony of Dr. Michael Thomas Margolis [Docket
88]; (3) Motion to Exclude the Testimony of Thomas H. Barker, Ph.D. [Docket 90]; (4) Motion
to Exclude the Testimony of Jimmy W. Mays, Ph.D. and Samuel P. Gido, Ph.D. [Docket 92]; (5)
Motion to Exclude the Opinions and Testimony of Emery Salom, M.D., FACOG [Docket 94];
(6) Motion to Exclude the Testimony of Dr. Peggy Pence, Ph.D. [Docket 96]; (7) Motion to
Exclude the Testimony of Dr. Mark Slack [Docket 98]; (8) Motion for Leave to File
Supplemental Brief to Its Motion to Exclude Testimony of Dr. Mark Slack [Docket 147]; (9)
Motion to Exclude the Testimony of Dr. Raybon [Docket 100]; (10) Motion to Exclude the
Testimony of Linda Kiley, M.D. [Docket 102]; (11) Motion to Exclude the Testimony of
Vladimir Iakovlev, M.D. [Docket 104]; (12) Motion to Exclude the Testimony of Konstantin
Walmsley, M.D. [Docket 109]; and (13) Motion to Exclude the Opinions and Testimony of Jorge
Pando, M.D. [Docket 155].
The following motions have been brought by the plaintiffs: (1) Motion to Exclude the
Testimony of Stephen H. Spiegelberg, Ph.D. [Docket 111]; (2) Motion to Exclude the Testimony
of Stephen Badylak, M.D. [Docket 113]; (3) Motion to Exclude the Testimony of Matthew F.
Davies, M.D. [Docket 115]; (4) Motion to Exclude the Testimony of Christine L. Brauer, Ph.D.
[Docket 117]; (5) Motion to Exclude the Testimony of Gary L. Winn, Ph.D. [Docket 119].
For the reasons explained below, the defendant’s motion with respect to Dr. Trepeta
[Docket 86] is GRANTED IN PART and DENIED IN PART. The defendant’s motion with
respect to Dr. Margolis [Docket 88] is GRANTED IN PART and DENIED IN PART. The
defendant’s motion with respect to Dr. Barker [Docket 90] is GRANTED. The defendant’s
motion with respect to Drs. Mays and Gido [Docket 92] is GRANTED IN PART and DENIED
IN PART. The defendant’s motion with respect to Dr. Salom [Docket 94] is DENIED. The
defendant’s motion with respect to Dr. Pence [Docket 96] is GRANTED IN PART and
DENIED IN PART. The defendant’s motions with regard to Dr. Slack [Dockets 98 and 147] are
GRANTED and DENIED, respectively. The defendant’s motion with respect to Dr. Raybon
[Docket 100] is GRANTED IN PART and DENIED IN PART. The defendant’s motion with
respect to Dr. Kiley [Docket 102] is GRANTED IN PART and DENIED IN PART. The
defendant’s motion with regard to Dr. Iakovlev [Docket 104] is GRANTED IN PART and
DENIED IN PART. The defendant’s motion with regard to Dr. Walmsley [Docket 109] is
DENIED IN PART and DENIED AS MOOT. The defendant’s motion with respect to Dr.
Pando [Docket 155] is GRANTED.
2
The plaintiffs’ motion with regard to Dr. Spiegelberg [Docket 111] is GRANTED IN
PART and RESERVED IN PART. The plaintiffs’ motion with respect to Dr. Badylak [Docket
113] is GRANTED IN PART and RESERVED IN PART. The plaintiff’s motion with regard
to Dr. Davies [Docket 115] is DENIED. The plaintiffs’ motion with regard to Dr. Brauer
[Docket 117] is GRANTED. The plaintffs’ motion with regard to Dr. Winn [Docket 119] is
GRANTED.
I.
Background
This consolidated case resides in one of seven MDLs assigned to me by the Judicial
Panel on Multidistrict Litigation concerning the use of transvaginal surgical mesh to treat pelvic
organ prolapse (“POP”) and stress urinary incontinence (“SUI”). In the seven MDLs, there are
over 60,000 cases currently pending, over 13,000 of which are in the Boston Scientific
Corporation MDL, MDL 2326. In this particular case, the four plaintiffs were surgically
implanted with the Pinnacle Pelvic Floor Repair Kit (“the Pinnacle”), a mesh product
manufactured by BSC to treat POP. (See Pretrial Order # 91 [Docket 10], at 1–2). 1 All of the
plaintiffs received their surgeries in Florida. The plaintiffs claim that as a result of implantation
of the Pinnacle, they have experienced “erosion, mesh contraction, infection, fistula,
inflammation, scar tissue, organ perforation, dyspareunia (pain during sexual intercourse), blood
loss, neuropathic and other acute and chronic nerve damage and pain, pudendal nerve damage,
pelvic floor damage, and chronic pelvic pain.” (Id. at 3 (quoting the master complaint)). The
plaintiffs allege negligence, design defect, manufacturing defect, failure to warn, breach of
express warranty, breach of implied warranty, and punitive damages. (Id. at 1–2). The parties
1
I originally consolidated the cases of five plaintiffs implanted with the Pinnacle. (See Pretrial Order # 91 [Docket
10] (naming Eghnayem, Dotres, Nunez, Dubois-Jean, and Betancourt as consolidated plaintiffs)). Four plaintiffs
now remain in this action. (See Order [Docket 35] (removing Dubois-Jean from the consolidated pool)).
3
have retained experts to render opinions regarding the elements of these causes of action, and the
instant motions involve the parties’ efforts to exclude or limit the experts’ opinions and
testimony pursuant to Daubert v. Merrell Dow Pharm., Inc., 509 U.S. 579 (1993).
II.
Legal Standard
Under Federal Rule of Evidence 702, expert testimony is admissible if the expert is
“qualified . . . by knowledge, skill, experience, training, or education,” and if his testimony is (1)
helpful to the trier of fact in understanding the evidence or determining a fact in issue; (2) “based
upon sufficient facts or data”; and (3) “the product of reliable principles and methods” that (4)
have been reliably applied “to the facts of the case.” Fed. R. Evid. 702. The U.S. Supreme Court
established a two-part test to govern the admissibility of expert testimony under Rule 702—the
evidence is admitted if it “rests on a reliable foundation and is relevant.” Daubert, 509 U.S. at
597. The proponent of expert testimony does not have the burden to “prove” anything to the
court. Md. Cas. Co. v. Therm-O-Disk, Inc., 137 F.3d 780, 783 (4th Cir. 1998). He or she must,
however, “come forward with evidence from which the court can determine that the proffered
testimony is properly admissible.” Id.
The district court is the gatekeeper. 2 It is an important role: “[E]xpert witnesses have the
potential to be both powerful and quite misleading[;]” the court must “ensure that any and all
scientific testimony . . . is not only relevant, but reliable.” Cooper v. Smith & Nephew, Inc., 259
F.3d 194, 199 (4th Cir. 2001) (citing Westberry v. Gislaved Gummi AB, 178 F.3d 257, 261 (4th
Cir. 1999) and Daubert, 509 U.S. at 588, 595). In carrying out this role, I “need not determine
2
With more than 60,000 cases related to surgical mesh products currently pending before me, this gatekeeper role
takes on extraordinary significance. Each of my evidentiary determinations carries substantial weight with the
remaining surgical mesh cases. Regardless, while I am cognizant of the subsequent implications of my rulings in
these cases, I am limited to the record and the arguments of counsel.
4
that the proffered expert testimony is irrefutable or certainly correct”—“[a]s with all other
admissible evidence, expert testimony is subject to testing by ‘vigorous cross-examination,
presentation of contrary evidence, and careful instruction on the burden of proof.’” United States
v. Moreland, 437 F.3d 424, 431 (4th Cir. 2006) (quoting Daubert, 509 U.S. at 596); see also Md.
Cas. Co., 137 F.3d at 783 (noting that “[a]ll Daubert demands is that the trial judge make a
‘preliminary assessment’ of whether the proffered testimony is both reliable . . . and helpful”).
Daubert mentions specific factors to guide the court in making the overall reliability
determinations that apply to expert evidence. These factors include (1) whether the particular
scientific theory “can be (and has been) tested”; (2) whether the theory “has been subjected to
peer review and publication”; (3) the “known or potential rate of error”; (4) the “existence and
maintenance of standards controlling the technique’s operation”; and (5) whether the technique
has achieved “general acceptance” in the relevant scientific or expert community. United States
v. Crisp, 324 F.3d 261, 266 (4th Cir. 2003) (quoting Daubert, 509 U.S. at 593–94).
Despite these factors, “[t]he inquiry to be undertaken by the district court is ‘a flexible
one’ focusing on the ‘principles and methodology’ employed by the expert, not on the
conclusions reached.” Westberry, 178 F.3d at 261 (quoting Daubert, 509 U.S. at 594–95); see
also Kumho Tire Co. v. Carmichael, 526 U.S. 137, 150 (1999) (“We agree with the Solicitor
General that ‘[t]he factors identified in Daubert may or may not be pertinent in assessing
reliability, depending on the nature of the issue, the expert’s particular expertise, and the subject
of his testimony.’”) (citation omitted); see also Crisp, 324 F.3d at 266 (noting “that testing of
reliability should be flexible and that Daubert’s five factors neither necessarily nor exclusively
apply to every expert”).
5
With respect to relevancy, Daubert further explains:
Expert testimony which does not relate to any issue in the case is not relevant and,
ergo, non-helpful. The consideration has been aptly described by Judge Becker as
one of fit. Fit is not always obvious, and scientific validity for one purpose is not
necessarily scientific validity for other, unrelated purposes. . . . Rule 702’s
helpfulness standard requires a valid scientific connection to the pertinent inquiry
as a precondition to admissibility.
Daubert, 509 U.S. at 591–92 (internal citations and quotation marks omitted).
Finally, in several of the instant Daubert motions, a specific scientific methodology
comes into play, dealing with differential diagnoses or etiologies. “Differential diagnosis, or
differential etiology, is a standard scientific technique of identifying the cause of a medical
problem by eliminating the likely causes until the most probable one is isolated.” Westberry, 178
F.3d at 262. The Fourth Circuit has stated that:
A reliable differential diagnosis typically, though not invariably, is performed
after “physical examinations, the taking of medical histories, and the review of
clinical tests, including laboratory tests,” and generally is accomplished by
determining the possible causes for the patient’s symptoms and then eliminating
each of these potential causes until reaching one that cannot be ruled out or
determining which of those that cannot be excluded is the most likely.
Id. A reliable differential diagnosis passes scrutiny under Daubert. An unreliable differential
diagnosis is another matter:
A differential diagnosis that fails to take serious account of other potential causes
may be so lacking that it cannot provide a reliable basis for an opinion on
causation. However, “[a] medical expert’s causation conclusion should not be
excluded because he or she has failed to rule out every possible alternative cause
of a plaintiff’s illness.” The alternative causes suggested by a defendant “affect
the weight that the jury should give the expert’s testimony and not the
admissibility of that testimony,” unless the expert can offer “no explanation for
why she has concluded [an alternative cause offered by the opposing party] was
not the sole cause.”
Id. at 265–66 (internal citations omitted).
6
Ultimately, the district court has broad discretion in determining whether to admit or
exclude expert testimony, and the “the trial judge must have considerable leeway in deciding in a
particular case how to go about determining whether particular expert testimony is reliable.”
Cooper, 259 F.3d at 200 (quoting Kumho Tire, 526 U.S. at 152).
Before I review these motions, I begin by addressing three arguments that apply to many
of the parties’ Daubert objections. First, as I have maintained throughout these MDLs, I will not
permit the parties to use experts to usurp the jury’s fact-finding function by allowing an expert to
testify as to a party’s state of mind or on whether a party acted reasonably. See, e.g., Huskey v.
Ethicon, Inc., 2:12-cv-05201, 2014 WL 3362264, at *3 (S.D. W. Va. July 8, 2014); Lewis, et al.
v. Ethicon, Inc., 2:12-cv-4301, 2014 WL 186872, at *6, *21 (S.D. W. Va. Jan. 15, 2014); In re C.
R. Bard, Inc., 948 F. Supp. 2d 589, 611, 629 (S.D. W. Va. 2013). Although an expert may testify
about his or her review of internal corporate documents solely for the purpose of explaining the
basis for his or her opinions—assuming the opinions are otherwise admissible—a party’s
knowledge, state of mind, or other matters related to corporate conduct and ethics are not
appropriate subjects of expert testimony because opinions on these matters will not assist the
jury.
Second, “opinion testimony that states a legal standard or draws a legal conclusion by
applying law to the facts is generally inadmissible.” United States v. McIver, 470 F.3d 550, 562
(4th Cir. 2006). I have diligently applied this rule to previous expert testimony, and I continue to
adhere to it in this case. I will not parse the expert reports and depositions of each expert in
relation to these same objections. I trust that able counsel in this matter will tailor expert
testimony at trial accordingly.
7
Last, with respect to the arguments that certain experts’ testimony is litigation driven, I
note that an expert’s formulation of his or her opinion for the purposes of litigation does not, by
itself, justify that expert’s exclusion. See Daubert v. Merrell Dow Pharm., Inc. (“Daubert II”),
43 F.3d 1311, 1317 (9th Cir. 1995) (“That an expert testifies for money does not necessarily cast
doubt on the reliability of his testimony, as few experts appear in court merely as an
eleemosynary gesture.”). This concern, however, does have a role in applying Daubert. See
Hoffman v. Monsanto Co., No. 2:05-cv-00418, 2007 WL 2984692, at *3 (S.D. W. Va. Oct. 11,
2007) (considering in the Daubert analysis “[w]hether experts are proposing to testify about
matters growing naturally and directly out of research they have conducted independent of the
litigation, or whether they have developed their opinions expressly for purposes of testifying”
(quoting Fed. R. Evid. 702 advisory committee’s note)). In sum, I will not exclude an expert on
the sole basis that the opinion arose during litigation, so long as it is otherwise reliable. But I will
consider the independence of an expert’s testimony as evidence that his “research comports with
the dictates of good science.” Daubert II, 43 F.3d at 1317. Having addressed these universal
objections, I now turn to BSC’s Daubert motions.
III.
BSC’s Daubert Motions
In this case, BSC seeks to limit or exclude certain opinion testimony of Dr. Richard W.
Trepeta, Dr. Michael Thomas Margolis, Dr. Thomas H. Barker, Drs. Jimmy W. Mays and
Samuel P. Gido, Dr. Emery Salom, Dr. Peggy Pence, Dr. Mark Slack, Dr. R. Brian Raybon, Dr.
Linda Kiley, Dr. Vladimir Iakovlev, Dr. Konstantin Walmsley, and Dr. Jorge Pando.
A. Motion to Exclude the Testimony of Richard W. Trepeta, M.D.
8
In this case, the plaintiffs offer Dr. Trepeta to testify as an expert witness on the general
pathology of vaginal mesh implantation (see generally Trepeta General Report [Docket 87-1])
and on the specific pathology of Plaintiffs Nunez (see generally Trepeta Report re: Nunez
[Docket 87-2]; Trepeta Report re: Betancourt [Docket 87-3]). Among other things, Dr. Trepeta is
a board-certified pathologist and a Fellow with the College of American Pathologists and the
International Society for the Study of Vulvovaginal Disease. As part of his fellowship, he
“establishes criteria and terminology for the diagnosis of vulvar and vaginal diseases.” (Trepeta
General Report [Docket 87-1], at 2). Dr. Trepeta also examines vulvar–vaginal pathology
samples through his private practice. (Id.).
BSC moves to exclude Dr. Trepeta as an expert witness, raising two primary objections:
(1) Dr. Trepeta is not qualified to opine on the properties of polypropylene mesh or the clinical
responses to mesh implants; and (2) Dr. Trepeta’s opinions are unreliable, irrelevant, and not
helpful to the jury. (See generally BSC’s Mem. in Supp. of its Mot. to Exclude Richard W.
Trepeta (“BSC’s Mem. re: Trepeta”) [Docket 87]). As further explained below, I GRANT IN
PART and DENY IN PART BSC’s Motion to Exclude Dr. Trepeta [Docket 86].
1. Dr. Trepeta’s Qualifications
BSC begins by contending that Dr. Trepeta’s background in pathology does not qualify
him under Federal Rule of Evidence 702 to render the opinions he sets forth in his expert reports
on the properties of polypropylene and the human clinical response to polypropylene implants.
a. Properties of Polypropylene Mesh
In his general report, Dr. Trepeta opines about mesh degradation, mesh contraction, and
mesh migration. He states that “[d]egradation occurs as either fragmentation of the mesh or
9
oxidation [of the mesh] release[s] chemical components from the mesh into surrounding tissues,”
and “[m]esh contraction and shrinkage cause the mesh to be significantly decreased in its
physical size.” (Trepeta General Report [Docket 87-1], at 5). BSC asserts that Dr. Trepeta is not
qualified to put forth these opinions because he is not a material scientist, biochemist, or
biomedical engineer. (See Trepeta Dep. [Docket 87-4], at 100:20–101:1). Furthermore, he has no
training in polymer science or biomedical engineering and has not performed mechanical or
chemical testing of mesh products. (See id. at 101:2–11).
In Sanchez, et al. v. Boston Scientific Corp., I considered this argument and disagreed
with BSC:
In making [its] argument, however, BSC downplays Dr. Trepeta’s
knowledge, training, and experience as a clinical pathologist. In general, a clinical
pathologist “will be knowledgeable in the areas of chemistry, hematology,
microbiology, . . . serology, immunology, and other special laboratory studies.”
33 Am. Jur. Trials § 17 (1986); see also Coll. of Am. Pathologists, CAP Fact
Sheet, http://www.cap.org (last visited Sept. 22, 2014) (“[Clinical pathologists]
are involved in a broad range of disciplines, including surgical pathology,
cytopathology, . . . clinical chemistry, microbiology, immunopathology, and
hematology.”). Dr. Trepeta’s thirty years’ experience as a clinical pathologist
therefore demonstrates sufficient knowledge to provide expert testimony about
the chemistry and surgical pathology of materials like transvaginal mesh.
Moreover, Dr. Trepeta has knowledge of and experience with pelvic mesh
explants in particular, having examined fifty explant samples over the past five
years. (See Trepeta General Report [Docket 86-1], at 2). According to Dr.
Trepeta, by examining the mesh explants under a microscope, he has witnessed
the polypropylene’s chemical changes. (See Trepeta Dep. [Docket 110-3], at
217:14–19). Given Dr. Trepeta’s knowledge and experience as an anatomical and
clinical pathologist, I FIND that he is qualified to testify about mesh degradation,
mesh shrinkage, and mesh migration, and I therefore DENY BSC’s motion in this
respect.
No. 2:12-cv-05762, 2014 WL 4851989, at *20 (S.D. W. Va. Sept. 29, 2014). I ADOPT this
holding here.
b. The Human Clinical Response to Polypropylene Mesh
10
Dr. Trepeta also opines that the “human body’s pathological response to implantation of
polypropylene mesh as well as the inherent physical properties of the mesh cause permanent
injuries resulting in distortion of the pelvic architecture, sexual dysfunction, persistent pain,
scarring, and alteration of bowel and bladder function.” (Trepeta General Report [Docket 87-1],
at 6). BSC contends that Dr. Trepeta is not qualified to present this opinion because Dr. Trepeta
does not treat patients for these conditions and has limited familiarity with the symptoms of
stress urinary incontinence and pelvic organ prolapse. (See Trepeta Dep. [Docket 87-4], at
109:21–23). In short, BSC argues that Dr. Trepeta is not a gynecologist, obstetrician,
urogynecologist, or a surgeon, and as a result, Dr. Trepeta’s opinions about the clinical response
to mesh should be excluded.
In Sanchez, I addressed this argument and held:
Dr. Trepeta’s extensive experience and knowledge in the field of
pathology qualify him to submit these opinions. Part of pathology involves
reaching a diagnosis through “clinical and pathologic correlation.” [(See Trepeta
Dep. [Docket 86-3], at 11:10–14)]. Dr. Trepeta frequently engages in this process
by providing clinical consultations to physicians, which require him to examine
clinical information (through specimens, reports, or physician findings) and reach
a pathologic diagnosis about a patient. (See id.). Dr. Trepeta applied this
pathologic process in reaching his conclusions about the human clinical responses
to polypropylene vaginal mesh. He examined fifty pathology samples from mesh
removals and opines that he observed injuries “consistent with the pathological
process of tissue response and/or injury due to polypropylene.” (Trepeta General
Report [Docket 86-1], at 2). He also compared medical literature to these
observations and concluded that his pathological findings “are well described in
the published literature.” (Id.). Dr. Trepeta’s understanding and application of the
pathologic process qualify him to opine on the causal relationship between
transvaginal mesh implantation and tissue response. Therefore, I DENY BSC’s
motion on this point.
2014 WL 4851989, at *20 (footnote omitted). I ADOPT this holding here.
2. The Reliability and Relevance of Dr. Trepeta’s Opinions
11
Next, BSC raises several objections to the reliability and relevancy of Dr. Trepeta’s
opinion testimony. I addressed each of these objections in Sanchez and consequently rely on
Sanchez to explicate my conclusions here.
a. Reliability of Dr. Trepeta’s Methodology in Formulating His Opinions
BSC contends that Dr. Trepeta’s method of using pathology reports to formulate his
opinions is unreliable. Dr. Trepeta used various resources to reach his expert opinion. First, Dr.
Trepeta has studied over fifty mesh explant samples in his private practice. Dr. Trepeta received
these samples from physicians about once a month over the past five years. (See Trepeta Dep.
[Docket 87-4], at 71:10–12). He examined these samples under a microscope, identified any
abnormalities, and concluded that the samples presented injuries “consistent with the
pathological process of tissue response and/or injury due to polypropylene.” (See Trepeta
General Report [Docket 87-1], at 2). Second, Dr. Trepeta studied the medical literature on mesh
implantation and determined that his pathological findings correspond with the published
research on mesh erosion and exposure in the vaginal wall. (See id. at 2–3). Third, Dr. Trepeta
reviewed twenty-four pathology reports that he received from the plaintiffs’ counsel and
ascertained that “the pathology reports of excised Boston Scientific Products . . . are consistent”
with the acute, sub-acute, and chronic categories of the disease process. (Id. at 4).
As I held in Sanchez:
BSC’s strongest objection to Dr. Trepeta’s methodology focuses on this
third source of information. BSC argues that the twenty-four pathology reports
were unreliable because: they were “hand-selected by Plaintiffs’ counsel”; Dr.
Trepeta only relied on seventeen of the twenty-four reports; and Dr. Trepeta did
not review the medical records of any of the probed patients. (BSC’s Mem. re:
Trepeta [Docket 235], at 11–12). The plaintiffs respond that these pathology
reports only supplemented Dr. Trepeta’s opinion and that the main thrust of Dr.
Trepeta’s opinion comes from his review of fifty mesh explants over the past five
12
years and from his study of medical literature. Moreover, the plaintiffs argue that
BSC’s chosen expert, Dr. Badylak, agreed that review of pathology reports of
vaginal tissue taken from polypropylene explants is an accepted method for
reaching a pathologic conclusion on tissue response to polypropylene. (See Pls.’
Resp. in Opp’n to Def.’s Mot. to Exclude Dr. Trepeta [Docket 110], at 13).
The fact that each side’s pathologist accepts this practice suggests that it is
accepted by the general community of pathologists. See Daubert, 509 U.S. at 594
(“Widespread acceptance can be an important factor in ruling particular evidence
admissible . . . .”). But Dr. Trepeta’s review of the pathology reports still has a
fatal deficiency in that it lacked standards to govern the process of selecting the
sample of pathology reports to be evaluated. See id. (listing as a factor in
evaluating an expert’s opinion the “existence and maintenance of standards
controlling the technique’s operation”). The plaintiffs do not explain how or why
they chose these twenty-four reports for Dr. Trepeta’s review, and without such
an explanation, I have no way of assessing the potential rate of error or the
presence of bias. See id. (stating that the “court ordinarily should consider the
potential rate of error”). I confronted a similar situation in Lewis, et al. v Ethicon,
Inc. and excluded the expert opinion on hand-selected explant samples because
“[t]here are no assurances that [plaintiffs’ counsel] did not opportunistically
choose samples while ignoring others that might have weakened or disproved [the
expert’s] theories.” No. 2:12-cv-4301, 2014 WL 186872, at *8 (S.D. W. Va. Jan
15, 2014). Here, I similarly have no way to ensure that the plaintiffs’ counsel did
not provide Dr. Trepeta with only those pathology reports that tended to
strengthen, rather than refute, Dr. Trepeta’s opinions. Accordingly, Dr. Trepeta’s
opinions derived from his review of the twenty-four pathology reports are
EXCLUDED.
2014 WL 4851989, at *22. I ADOPT this holding, accepting Dr. Trepeta’s opinions as reliable
apart from those opinions based on his review of the twenty-four pathology reports.
b. Litigation Driven Opinions
BSC also argues Dr. Trepeta’s opinions are unreliable because they are litigation-driven.
Specifically, BSC asserts that Dr. Trepeta’s “familiarity with the literature on polypropylene
mesh comes only from his research and reading in connection with this litigation.” (BSC’s Mem.
re: Trepeta [Docket 87], at 13). As in Sanchez, I disagree. Dr. Trepeta has largely based his
opinions on his professional experience with mesh pathology samples examined during his
13
practice. (Trepeta General Report [Docket 87-1], at 2). In addition, he testified that he has
“looked at mesh removed from the bodies of female vaginal walls under the microscope” and has
seen degradation. (Trepeta Dep. [Docket 131-4], at 217:14–19). These activities occurred outside
of this litigation. Thus, I FIND that Dr. Trepeta’s opinions are not litigation-driven and DENY
BSC’s motion on this point.
c. Dr. Trepeta’s Specific Causation Opinion
Dr. Trepeta also offers a specific causation opinion concerning Ms. Nunez and Ms.
Betancourt. For both plaintiffs, Dr. Trepeta opines that their
symptoms of pain, discharge, infection, dyspareunia, mesh exposure, resulting
diagnoses, and medical treatment for vaginal and pelvic floor complications are
all directly attributable to the implantation of polypropylene surgical mesh in the
Pinnacle Pelvic Floor Repair surgical mesh. . . . My personal experience as a
pathologist, with special training and focus on pathology of the vagina, as well as
my knowledge and training, has shown complications directly as effect of tissue
response to polypropylene implant. . . .
(Trepeta Report re: Nunez [Docket 87-2], at 5; Trepeta Report re: Betancourt [Docket 87-3], at
5–6). Dr. Trepeta adds that the “inflammatory response described and documented within the
medical records provided by Ms. Nunez [and Ms. Betancourt] are consistent with the chronic
phase of mesh implantation.” (Trepeta Report re: Nunez [Docket 87-2], at 5; Trepeta Report re:
Betancourt [Docket 87-3], at 5). BSC argues that the specific causation opinions are unreliable
because: (1) his general causation opinion is unreliable; and (2) the methodology informing his
specific causation opinions “is faulty.” (BSC’s Mem. re: Trepeta [Docket 87], at 14).
Apart from Dr. Trepeta’s review of the twenty-four pathology reports, I concluded that
Dr. Trepeta’s general causation opinion was reliable. Therefore, BSC’s first argument fails. BSC
next argues that because Dr. Trepeta did not review the plaintiffs’ mesh specimens and instead
14
based his conclusion on their medical records, his methodology is unreliable. Whether or not a
pathologist has reviewed pathology specimens in reaching his opinion does carry weight in
determining reliability, but Dr. Trepeta’s failure to examine pathology specimens is not
determinative here. So long as an expert “employs in the courtroom the same level of intellectual
rigor that characterizes the practice of an expert in the relevant field,” he does not necessarily
have to perform a physical examination of the patient to offer an expert opinion. Cooper v. Smith
& Nephew, Inc., 259 F.3d 194, 203 (4th Cir. 2001) (quoting Kumho Tire Co. v. Carmichael, 526
U.S. 137, 152 (1999)). Here, Dr. Trepeta testified that he often gives pathologic opinions without
examining patient specimens or pathology reports. (See Trepeta Dep. [Docket 131-4], at 37:11–
38:9). Thus, Dr. Trepeta’s failure to examine pathology specimens does not automatically render
his specific causation opinion unreliable.
I nevertheless find Dr. Trepeta’s specific causation opinions unreliable. In addition to not
reviewing any of the plaintiffs’ pathology specimens, Dr. Trepeta has not conducted a
differential diagnosis in reaching his conclusion that Ms. Nunez and Ms. Betancourt’s pain
resulted from the Pinnacle. In attempt to support a differential diagnosis, the plaintiffs point to
Dr. Trepeta’s deposition testimony about Ms. Sanchez, a plaintiff in another MDL case, wherein
Dr. Trepeta discussed alternative causes of Ms. Sanchez’s pain. (See Pls.’ Resp. in Opp’n to
BSC’s Mot. to Exclude the Ops. & Test. of Dr. Trepeta [Docket 131], at 19 (“Dr. Trepeta has not
been deposed in these two cases. Accordingly, testimony on his methodology in the Sanchez case
is instructive.”)). This testimony is unconvincing. First, in Sanchez, I excluded Dr. Trepeta’s
specific causation testimony about Ms. Sanchez because the differential diagnosis was
inadequate. Sanchez, 2014 WL 4851989, at *23–24. Second, to qualify as “reliable,” a
15
differential diagnosis must be patient-specific. See Westberry v. Gislaved Gummi AB, 178 F.3d
257, 262 (4th Cir. 1999) (explaining that a reliable differential diagnosis “generally is
accomplished by determining the possible causes for a patient’s symptoms”) (emphasis added).
Eliminating causes for Ms. Sanchez, therefore, says nothing about causation for Ms. Nunez and
Ms. Betancourt. Disregarding the plaintiffs’ reference to Dr. Trepeta’s testimony about Ms.
Sanchez, no reliable differential diagnosis exists for the current plaintiffs.
This ruling corresponds with previous Daubert rulings on pathologists. In Tyree et al. v.
Boston Scientific Corp., for example, I did not exclude Dr. Trepeta’s specific causation
testimony because he had “observed the patient’s slides under a microscope, detected a foreign
material, and concluded that the foreign material was polypropylene from the Obtryx sling by
applying a process of elimination.” No. 2:12-cv-08633, 2014 WL 5320566, at *18 n.5 (S.D. W.
Va. Oct. 17, 2014). Similarly, in the present case, I have not excluded Dr. Iakolev’s specific
causation opinions. Dr. Iakolev testified that he performed a “morphological differential
diagnosis” in preparing his specific causation report for Ms. Eghnayem, which allowed him to
rule out alternative causes. (Iakovlev Dep. II [Docket 105-3], at 153). Dr. Trepeta, without
reviewing the pathology specimens or performing a differential diagnosis, cannot support his
specific causation opinions with a scientific basis. Accordingly, his specific causation opinions
on Ms. Nunez and Ms. Betancourt are EXCLUDED.
In conclusion, Dr. Trepeta’s general causation opinions satisfy Daubert, apart from his
opinions based on the pathologic reports selected by the plaintiffs’ counsel for his review, which
are EXCLUDED. Dr. Trepeta’s specific causation opinions are also EXCLUDED. Thus, BSC’s
16
Motion to Exclude the Opinions and Testimony of Dr. Trepeta is GRANTED PART and
DENIED IN PART [Docket 86].
B. Motion to Exclude the Opinions and Testimony of Michael Thomas Margolis,
M.D. 34
BSC moves to exclude the opinions and testimony of Michael Thomas Margolis, M.D.
Dr. Margolis is a pelvic floor surgeon and urogynecologist. He seeks to offer several opinions
regarding polypropylene mesh slings, alternative procedures, and complications associated with
mesh products. BSC argues that Dr. Margolis’s opinions are unreliable because he failed to
consider scientific literature contrary to his opinions and failed to provide any scientific basis for
other opinions. (See Def. BSC’s Mem. of Law in Supp. of Its Mot. to Exclude the Ops. and Test.
of Michael Thomas Margolis, M.D. (“BSC’s Mem. re: Margolis”) [Docket 89], at 1–2). In
addition, BSC contends that Dr. Margolis’s opinions “either (1) constitute legal opinions, (2) fall
outside the scope of his expertise, or (3) consist of speculation regarding Boston Scientific’s
knowledge, intent and/or state of mind.” (Id. at 2).
I have previously reviewed the opinion testimony of Dr. Margolis under Daubert. See
Sanchez, et al. v. Boston Scientific Corp., No. 2:12-cv-05762, 2014 WL 4851989, at *10–19
(S.D. W. Va. Sept. 29, 2014). The parties in this case assert arguments on the admissibility of Dr.
Margolis’s expert opinion that I addressed in Sanchez. To the extent that there are differences in
3
I ruled in Sanchez on Daubert motions related to Dr. Margolis, Dr. Trepeta, Drs. Mays and Gido, Dr. Pence, and
Dr. Barker. In Sanchez, I relied on excerpts of deposition testimony from these experts, most, but not all of which
excerpts are attached as exhibits in this case. However, because the depositions cited in Sanchez are the same
depositions taken on the same date, I have relied on some excerpts from Sanchez here.
4
On October 6, 2014, the plaintiffs in Sanchez filed a Motion for Reconsideration for Dr. Margolis, Dr. Slack, and
Dr. Barker. See Sanchez, et al. v. Boston Scientific Corp., No. 2:12-cv-05762, [Docket 149]. I denied the motion on
October 17, 2014. See Sanchez, No. 2:12-cv-05762, [Docket 151]. To the extent the arguments raised in the Motion
for Reconsideration related to Dr. Margolis, Dr. Slack, and Dr. Barker overlap or may have been raised in this case,
I incorporate my findings here.
17
fact or exhibits, the court does not find them sufficiently material to this case. Thus, I ADOPT
my prior ruling on Dr. Margolis as follows, and I GRANT IN PART and DENY IN PART
BSC’s motion. I will address additional arguments raised by the parties in this case below.
1. Failure to Consider Contrary Scientific Studies in Forming His Opinions
BSC argues that Dr. Margolis failed to consider scientific studies that were contrary to
his opinions without a scientific basis for doing so.
An expert’s opinion may be unreliable if he fails to account for contrary scientific
literature and instead “selectively [chooses] his support from the scientific landscape.” In re
Rezulin Prods. Liab. Litig., 369 F. Supp. 2d 398, 425 (S.D.N.Y. 2005) (quotations omitted). “[I]f
the relevant scientific literature contains evidence tending to refute the expert’s theory and the
expert does not acknowledge or account for that evidence, the expert’s opinion is unreliable.”
Id.; see also Abarca v. Franklin Cnty. Water Dist., 761 F. Supp. 2d 1007, 1066 n.60 (E.D. Cal.
2011) (“A scientist might well pick data from many different sources to serve as circumstantial
evidence for a particular hypothesis, but a reliable expert would not ignore contrary data,
misstate the findings of others, make sweeping statements without support, and cite papers that
do not provide the support asserted.” (quotations omitted)); Rimbert v. Eli Lilly & Co., No. CIV
06-0874 JCH/LFG, 2009 WL 2208570, at *14 n.19 (D.N.M. July 21, 2009) aff’d, 647 F.3d 1247
(10th Cir. 2011) (“[A]n expert who chooses to completely ignore significant contrary
epidemiological evidence in favor of focusing solely on non-epidemiological studies that support
her conclusion engages in a methodology that courts find unreliable.”).
a. Opinions Regarding General Complication Rates in Women with
Polypropylene Mesh
In particular, BSC challenges Dr. Margolis’s general opinions regarding high
18
complication rates in women with polypropylene mesh products. In Sanchez, I cited to Dr.
Margolis’s deposition testimony, where he explains his belief that studies indicating low single
digit complication rates are not accurate because complications are underreported and data is
possibly fabricated. See Sanchez, 2014 WL 4851989, at *13. I also find that Dr. Margolis’s
method of “[g]iv[ing] the benefit of the doubt to the patient” is unreliable:
Dr. Margolis explains that, when forming his opinion about the complication rates
of a medical procedure, he “give[s] the benefit of the doubt to the patient.”
([Margolis Dep. [Docket 132-2],] at 259:7–9). In other words, he “assume[s] the
worst-case scenario” and errs on the side of opining as to a higher complication
rate to better protect a patient. (Id. at 259:11–259:23). Dr. Margolis eventually
admits that he has been evaluating the literature and forming his opinions for this
case according to that principle as well. (See id. at 259:20–260:14). “[G]iv[ing]
the benefit of the doubt to the patient” is not a scientific basis for determining the
complication rates associated with a mesh device. (Id. at 259:8–9).
Sanchez, 2014 WL 4851989, at *14. I ADOPT this reasoning here. Dr. Margolis’s opinions as to
this matter are EXCLUDED.
2. Failure to Provide Any Scientific Basis for His Other Opinions
BSC next argues that Dr. Margolis failed to offer any scientific basis for his other
opinions and based them solely on his experience.
a. Opinion Concerning the Lack of Sound Scientific Evidence Supporting the
Clinical Benefits of Polypropylene Mesh in POP
BSC challenges the reliability of Dr. Margolis’s opinions concerning a lack of sound
scientific evidence supporting the use of polypropylene mesh in treating POP. (See BSC’s Mem.
re: Margolis [Docket 89], at 9–10; Margolis Report [Docket 89-1], at 17). In support, BSC points
to Dr. Margolis’s deposition testimony where he contradicts these opinions. For example, BSC
cites to his testimony where he admits that there, in fact, are studies supporting the use of
polypropylene in POP:
19
Q:
Would you agree that there is data supporting the use, and scientific
literature supporting the use, of polypropylene to treat pelvic organ
prolapse through a vaginal approach?
A:
There is.
(Margolis Dep. [Docket 89-2], at 227:18-22). As I found in Sanchez in regards to Dr. Margolis’s
similar opinions concerning studies supporting the use of polypropylene mesh in treating SUI:
Inconsistent statements of a witness may be addressed on cross-examination. See
Daubert, 509 U.S. at 596 (“Vigorous cross-examination, presentation of contrary
evidence, and careful instruction on the burden of proof are the traditional and
appropriate means of attacking shaky but admissible evidence.”); In re Paoli R.R.
Yard PCB Litig., 35 F.3d 717, 749 (3d Cir.1994) (“[E]valuating the reliability of
scientific methodologies and data does not generally involve assessing the
truthfulness of the expert witnesses ...”). However, here, Dr. Margolis’s
inconsistencies seem to directly shed light on the unreliability of his method.
Even if Dr. Margolis is stating that there is a lack of credible evidence, as the
plaintiffs argue, it is still unclear why Dr. Margolis believes these studies lack
credibility. As a result, Dr. Margolis’s opinions are rendered untrustworthy and
unreliable.
Sanchez, 2014 WL 4851989, at *14. I ADOPT this reasoning here. Therefore, his opinions as to
this matter are EXCLUDED.
b.
Opinion that the Infection Rate of Polypropylene Mesh is Up to 100%
BSC next challenges Dr. Margolis’s opinion that the infection rate of polypropylene
mesh is up to 100%. (See BSC’s Mem. re: Margolis [Docket 89], at 10). As in Sanchez, BSC
points to a slide presentation that Dr. Margolis has given which cites a study finding infection
rates of 0% to 8%. (See id.). I addressed this issue in Sanchez:
Dr. Margolis’s inconsistent presentation does not automatically render his method
unreliable. In his report, Dr. Margolis does cite to scientific studies to support his
opinion. (See Margolis Report [Docket 58-1], at 16) (describing the Vollebregt
study finding 83.6% of implants contained bacteria during surgical implantation,
the Boulanger study finding 100% of mesh explants removed in the study due to
complications contain bacteria, the Shah and Badlani study finding infection in
mesh patients).
20
However, as BSC points out, the study which Dr. Margolis cites to support his
100% figure is not directly applicable. The Boulanger study did not find that
100% of the mesh systems explanted for the study were infected; the study found
that 100% of the mesh systems were contaminated with bacteria. (See Margolis
Report [Docket 58-1], at 16; Boulanger et al., Bacteriological Analysis of Meshes
Removed for Complications After Surgical Management of Urinary Incontinence
or Pelvic Organ Prolapse, 19 Int’l Urogynecol J. 827, 827 (2008) [Docket 58-5]).
The authors of the Boulanger study are not certain that bacteria contamination
leads to infection. (See Boulanger, supra, at 827, 830) (stating that the “exact
role” of bacterial contamination “is not yet clear” and “must be explored by other
experimental studies”)). They even write that “[i]nfection is a rare complication of
retropubic mid-urethral slings (0.7% of cases)” and that their “findings concur
with previously published data” on this subject. (Boulanger, supra, at 830).
The Boulanger study does not support the opinion that there is a 100% infection
rate in women who undergo mesh implantation surgery. Therefore, Dr.
Margolis’s methodology of basing his opinion on this study is unreliable.
Sanchez, 2014 WL 4851989, at *17. I ADOPT this reasoning here. Therefore, his opinion as to
this matter is EXCLUDED.
c. Opinion on the Percentage or Number of BSC Products Dr. Margolis Has
Removed
BSC challenges Dr. Margolis’s opinion on the percentage or number of BSC products
that he has removed. (See BSC’s Mem. re: Margolis [Docket 238], at 13). I agreed with BSC in
Sanchez on this point:
Dr. Margolis testified that he has removed approximately 300 polypropylene
mesh and sling products “throughout the last 15 or so years” and gives his “best
guess” that 10% to 15% of those were Boston Scientific. (Margolis Dep. [Docket
132-1], at 74:23–76:1). Dr. Margolis explained that “[t]he exact numbers of each
[product] I don’t keep track of.” (Id. at 74:11–19). When asked how he arrived at
that 10% to 15% figure for Boston Scientific products, Dr. Margolis testified that
these percentages are just to his “best recollection”:
Q: Have you tried to do a system—did you go back and try to do
some kind of systematic count, or are you just doing that from
recollection in terms of the percentage of Boston Scientific
products?
21
A: Best recollection.
(Id. at 76:13–18). Dr. Margolis testified that he cannot identify the mesh brand by
sight after explantation, and he “tr[ies] to get the operative records from the
implant” with the product manufacturing information but does not know how
often he receives these records for his patients. (Id. at 76:2–9, 77:14–78:2).
As a result, BSC argues that Dr. Margolis’s opinion as to the number or
percentage of BSC products he has removed is unreliable . . .
Without a reliable basis, Dr. Margolis’s opinions may be erroneous. See Lewis, et
al. v. Ethicon, Inc., 2:12-cv-4301, 2014 WL 186872, at *8 (S.D. W. Va. Jan. 15,
2014) (excluding expert’s “analyses of the mesh implants” because they were not
“controlled for error or bias”). Therefore, his opinions are EXCLUDED.
Sanchez, 2014 WL 4851989, at *18. I ADOPT this reasoning here. His opinions as to this matter
are EXCLUDED.
d.
Plaintiffs’ Argument Regarding the Daubert Analysis of Dr. Margolis in
Lewis
The plaintiffs in this case make an additional argument regarding Dr. Margolis’s expert
opinions. The plaintiffs contend that “this Court has already held that neither Daubert or Rule
702 require the exclusion of Dr. Margolis’s testimony” in Lewis and that, therefore, his
testimony should be admitted in this case. (See Pls.’ Resp. in Opp’n to BSC’s Mot. to Exclude
the Test. of Dr. Margolis (“Pls.’ Resp. re: Margolis”) [Docket 132], at 2 (citing Lewis v. Ethicon,
Inc., No. 2:12-cv-04301, 2014 WL 186872, at *15–17) (S. D. W. Va. Jan. 15, 2014)).
However, Lewis was a different case involving a different plaintiff, a different defendant,
and a different product. Also, in Lewis, Dr. Margolis submitted a different expert report which
included expert opinions specific to the plaintiff in Lewis. As a result, I reject this argument.
e. Plaintiffs’ Argument Regarding Dr. Margolis’s Experience and Kumho
Tire
22
Next, the plaintiffs in this case make an additional argument in response to BSC’s
contention that Dr. Margolis failed to provide any scientific basis for some of his opinions.
(BSC’s Mem. re: Margolis [Docket 132], at 2). The plaintiffs argue that Dr. Margolis’s
experience alone is enough basis for his opinions and quote the Supreme Court in Kumho Tire
stating “an expert might draw a conclusion from . . . extensive and specialized experience.” (Pls.
Resp. re: Margolis [Docket 132], at 2, 10 (citing Kumho Tire Co., Ltd. v. Carmichael, 526 U.S.
137, 156 (1999)).
However, “[p]roposed testimony must be supported by appropriate validation—i.e.,
‘good grounds’ based on what is known.” Daubert, 509 U.S. at 590. Dr. Margolis writes that he
“considered the scientific literature” in forming his opinions, (see Margolis Report [Docket 891], at 5), yet, as I discuss in Sanchez, he is unable to provide scientific support for some of his
opinions. See Sanchez, 2014 WL 4851989, at *14–18. Even though Dr. Margolis has experience,
he must still base his opinions on a reliable, scientific method. See Daubert, 509 U.S. at 590
(“[I]n order to qualify as ‘scientific knowledge,’ an inference or assertion must be derived by the
scientific method.”). The plaintiffs’ argument is unavailing.
3. Offering Opinions Outside Area of Expertise
BSC argues that several of Dr. Margolis’s opinions should be excluded because they are
outside his area of expertise. (See BSC Mem. re: Margolis [Docket 89], at 12). In particular, BSC
challenges Dr. Margolis’s opinions as to: “biomaterials, adequate pore size, adequate weight of
polypropylene, polypropylene degradation, biocompatibility of polypropylene, medical device
design and development, and marketing.” (Id. (internal citations omitted)). As in Sanchez, the
plaintiffs conceded that Dr. Margolis will not be offering these opinions at trial. (See Pls.’ Resp.
23
re: Margolis [Docket 132], at 13). Therefore, this aspect of BSC’s motion is DENIED AS
MOOT.
4. Impermissible Expert Opinions As To BSC’s State of Mind
BSC also argues that Dr. Margolis seeks to offer testimony as to BSC’s state of mind,
knowledge, and intent during product development. As I explained in Sanchez, expert testimony
about a defendant company’s state of mind is impermissible. In Lewis, I excluded state of mind
testimony of Dr. Margolis because “he is not qualified ... to opine on Ethicon’s state of mind or
knowledge.” Lewis, 2014 WL 186872, at * 15. The plaintiffs concede that Dr. Margolis will not
be offering these opinions at trial. (See Pls.’ Resp. re: Margolis [Docket 132], at 13). Therefore,
this aspect of BSC’s motion is DENIED AS MOOT.
Therefore, I GRANT IN PART and DENY IN PART BSC’s motion regarding Dr.
Margolis [Docket 88].
C. Motion to Exclude the Testimony of Thomas H. Barker, Ph.D.
BSC moves to exclude the opinions and testimony of Thomas H. Barker, Ph.D. Dr.
Barker is a biomedical engineer who seeks to opine as to the behavior of polypropylene mesh
inside of the human body. (See Barker Report [Docket 91-1], at 1, 4–5). He bases his opinions on
mechanical stress tests that he conducted on the Obtryx Transobturator Mid-Urethral Sling
System (“the Obtryx”) and Pinnacle products, his experience, scientific literature, and internal
documents. (See id. at 3). BSC argues that Dr. Barker’s opinions are unreliable and irrelevant. In
particular, BSC argues that Dr. Barker’s testing methodology was flawed, that his opinions are
litigation driven, that he is unqualified to opine as to polypropylene and product design, and that
Dr. Barker seeks to offer impermissible state of mind testimony.
24
I have previously reviewed the opinion testimony of Dr. Barker under Daubert. See
Sanchez, et al. v. Boston Scientific Corp., No. 2:12-cv-05762, 2014 WL 4851989, at *5–10 (S.D.
W. Va. Sept. 29, 2014). The parties in this case assert arguments on the admissibility of Dr.
Barker’s expert opinion that I addressed in Sanchez. To the extent that there are differences in
fact or exhibits, the court does not find them sufficiently material to this case. Thus, I ADOPT
my prior ruling on Dr. Barker as follows and thereby GRANT BSC’s motion. I will address
additional arguments raised by the parties in this case below.
1. Qualifications
BSC challenges Dr. Barker’s qualifications. In Sanchez, I found Dr. Barker qualified to
opine as to the properties of polypropylene, and I ADOPT the same reasoning here:
Dr. Barker holds a Ph.D. in biomedical engineering and is currently on the faculty
of a joint department within the Georgia Institute of Technology and Emory
University School of Medicine. He states in his expert report that his research
focuses on
the effects of mechanical forces and tissue/material mechanical
properties (e.g. stiffness) on the host response. I am trained and
have extensive expertise in the evaluation of biomaterial
mechanical properties, biomaterial/implant design, the foreign
body host response, and human tissues under repair and fibrosis,
including analyses of cell/molecular biological outcomes.
([Barker Report [Docket 71-1],] at 2). He conducted postdoctoral research
focusing on “exploring the mechanisms of biomaterial associated fibrosis (e.g. the
foreign body response).” (Id.). Additionally, Dr. Barker has authored several book
chapters and peer-reviewed articles on biomaterials and biomedical engineering.
(See id.).
Sanchez, 2014 WL 4851989, at *5–6. As I note in Sanchez, even though Dr. Barker is qualified,
I must still determine that his method is reliable. Id. at 6.
2. Admissibility of Opinions Based on Dr. Barker’s Mechanical Testing
25
BSC argues that Dr. Barker’s opinions based on his mechanical testing are unreliable and
irrelevant. In particular, BSC argues that Dr. Barker’s testing is flawed because it “1) does not
replicate the published protocol he claims to have followed; 2) fails to utilize a sufficient sample
size; 3) fails to meet the standards required for publication in a peer-reviewed journal; and 4)
does not replicate the physiological environment or forces experienced in the female pelvic
floor.” (Def. BSC’s Mem. of Law in Supp. of Its Mot. to Exclude the Ops. and Test. of Thomas
H. Barker, Ph.D. (“BSC’s Mem. re: Barker”) [Docket 91], at 5). In Sanchez, BSC raised the
same arguments.
a. Dr. Barker Failed to Follow Published Protocols
BSC argues that Dr. Barker’s failure to soak the pieces of mesh in a saline bath, contrary
to published protocols, is unreliable. The Shepherd and Moalli protocols call for the use of a
saline bath as part of testing to help better replicate the physiological environment of the human
body. In Sanchez, I found that this deviation from protocols without a scientific basis rendered
his method flawed:
His only reasoning was that Georgia Tech denied him permission to submerge its
equipment in saline, a “potentially corrosive” solution. (Id. at 197:20–198:21).
The difference in the results obtained by Dr. Barker and by Drs. Shepherd and
Moalli further demonstrate the unreliability of his method. Dr. Barker’s tests
revealed two to four times more relative elongation of the mesh than Drs.
Shepherd and Moalli’s tests. (See Shepherd, supra, at 617; Moalli, supra, at 662;
Barker Report [Docket 71-1], at 21).
Sanchez, 2014 WL 4851989, at *7. Moreover, I found that the use of a saline bath to replicate the
human body was particularly important because Dr. Barker seeks to opine as to the in vivo
effects of mesh. See id. For the reasons stated above and in Sanchez, I find Dr. Barker’s
methodology to be unreliable.
26
b.
Dr. Barker Failed to Use a Sufficient Sample Size
BSC next argues that Dr. Barker failed to use a sufficient sample size when he tested one
piece of Obtryx mesh and 2 pieces of Pinnacle mesh. In Sanchez, I agreed with this argument,
especially since Dr. Barker admitted that a statistical test cannot be performed on a sample size
of one:
Dr. Barker admits that having a sample size of one is “insufficient to perform
statistical analysis.” (Dr. Barker Dep. [Docket 71-4], at 233:17–234:5). As a
result, it is difficult to predict whether his results were merely chance occurrences.
Dr. Barker explains that he wanted additional materials and he would have
conducted additional testing if they had been provided:
Q: In fact, a lot of the results that Dr. Moalli has published that are
different than your results, don’t you think you need to test another
piece of Obtryx mesh to confirm or not confirm the results that you
got based on your N equals 1?
A: I would have liked to have been provided with materials,
additional materials to do additional testing.
(Id. at 233:3–12) (objections omitted). Dr. Barker similarly testified about his
sample size of two for the Pinnacle:
Q: Now, with regard to the Pinnacle device, you had N equals 2,
right?
A: That's correct.
Q: Okay. Did you do anything to determine the statistical
confidence levels with regard to the testing that you performed on
the two pieces of Pinnacle mesh?
A: You cannot likewise perform a statistical test on an N of 2. A
minimum is a minimum of 3.
(Id. at 236:11–20). Dr. Barker's testing of merely one or two samples lacks
reliability.
Sanchez, 2014 WL 4851989, at *7–8. Dr. Barker’s sample size was a flaw in his method.
27
c.
Dr. Barker’s Testing Failed to Meet Peer Reviewed Standards
BSC argues that Dr. Barker’s testing was flawed because it was not up to peer-reviewed
standards. In Sanchez, I noted that Dr. Barker admits to this in his deposition testimony:
Q:
Would you agree with me that your testing that you performed on the
Obtryx with an N of 1 wouldn’t meet standards to be published in a peerreviewed journal?
A:
I would.
Q:
And would you agree with me that your testing that you did on Pinnacle
with an N of 2 wouldn’t meet the standards to be published in a peer
reviewed journal?
A:
I would agree.
Id. at *8 (citing Barker Dep. in Sanchez [Docket 71-4], at 301:20–302:5). I ADOPT this same
reasoning here and find that this factor weighs against finding Dr. Barker’s method reliable.
d.
Dr. Barker’s Testing Did Not Replicate In Vivo Conditions
BSC argues that Dr. Barker’s method is flawed because it failed to replicate the
physiological multi-directional forces in the female pelvic floor. In Sanchez, I agreed that Dr.
Barker’s uniaxial testing was unreliable to base opinions on the behavior of the mesh in vivo:
[B]ecause Dr. Barker’s method did not account for the multi-directional forces
inside of the female pelvis, his opinions about the effect of the mesh once
implanted in vivo are unreliable and do not survive Daubert scrutiny. Even Drs.
Shepherd and Moalli note that their studies do not conclusively reveal the mesh’s
behavior in the human body. (See Shepherd, supra, at 619 (stating that “this
experimental setup allows us to draw only preliminary conclusions about the
various meshes”); Moalli, supra, at 663 (noting that “the behavior of these slings
in vivo and after incorporation into host tissue may be inferred, but is not directly
apparent from these studies”)).
Sanchez, 2014 WL 4851989, at *9. I ADOPT this reasoning from Sanchez here, and based on
the above four arguments I FIND Dr. Barker’s method to be unreliable.
28
e. Plaintiffs Argue that Dr. Barker’s Method Was Generally Accepted
In this case, the plaintiffs raise an additional argument as to the reliability of Dr. Barker’s
method. The plaintiffs contend that Dr. Barker’s testing was generally accepted within the
scientific community. (Pls.’ Resp. in Opp’n to BSC’s Mot. to Exclude the Opinions & Testimony
of Thomas H. Barker, Ph.D. (“Pls.’ Resp. re: Barker”) [Docket 130], at 11–12). In support, the
plaintiffs point to Dr. Barker’s deposition testimony, where he explains that his general method
of testing material—reading relevant scientific literature, developing a testing protocol, and then
conducting “cyclic tensile testing and stress deformation analyses” in accordance with the
developed testing protocol—is generally accepted within his field. (Barker Dep. [Docket 130-4],
at 324:7–327:16). The plaintiffs argue that general acceptance “definitively forecloses a Daubert
challenge.” (Pls.’ Resp. re: Barker [Docket 130], at 12).
The trial judge must “ensur[e] that an expert’s testimony . . . rests on a reliable
foundation” and has “flexib[ility]” in making this assessment. Daubert, 509 U.S. at 594, 597.
Even if cyclic tensile testing and stress deformation analyses are generally accepted in the
bioengineering field, the plaintiffs’ argument does not cure the fatal deficiency in Dr. Barker’s
method—that he failed to take measures to replicate the human body when forming and
providing opinions as to the mesh’s behavior in vivo. For the reasons stated above and in
Sanchez, I find Dr. Barker’s methodology to be unreliable. See Sanchez, 2014 WL 4851989, at
*5–10.
Therefore, as I concluded in Sanchez, Dr. Barker’s method was unreliable and his
opinions based on this method are EXCLUDED.
3. Opinion Regarding the Mechanical Mismatch Between the Mesh and the
Human Body
29
BSC challenges Dr. Barker’s opinion regarding a mechanical mismatch between the
mesh and the human body and the adverse in vivo effects resulting from that mismatch. BSC
argues that it is unreliable. In Sanchez, I agreed because Dr. Barker based his calculation as to
the mesh on his unreliable testing:
[H]e based his elastic modulus calculations of the Pinnacle mesh on his
methodologically flawed and unreliable testing. . . Furthermore, as explained
above, Dr. Barker’s testing does not replicate the forces and environment of the
human body and, therefore, his opinions regarding the mesh’s effects in vivo are
unreliable.
Id. at *9. I ADOPT this reasoning here and find that Dr. Barker’s opinions based on the
mechanical mismatch are unreliable and, thus, EXCLUDED.
4.
BSC Argues that Dr. Barker’s Opinions are Litigation Driven
BSC states that “Dr. Barker’s opinions are unreliable because they are litigation
driven[.]” (BSC’s Mem. re: Barker [Docket 91], at 2). BSC raised this same argument in
Sanchez, and, thus, I ADOPT my reasoning:
[O]therwise reliable expert testimony will be admitted even if litigation driven.
Because I find Dr. Barker’s opinions to be otherwise unreliable and inadmissible,
I need not address this argument.
Sanchez, 2014 WL 4851989, at *9.
5. Relevancy of Dr. Barker’s Opinions Based on His Testing of the Obtryx
Dr. Barker tested both the Pinnacle and Obtryx products. The Pinnacle is the product at
issue in this case, but the Obtryx device is not at issue in this case. Because I find his opinions to
be unreliable, I need not address the relevancy of Dr. Barker’s opinions based on his testing of
the Obtryx device. See Daubert, 509 U.S. at 594–95 (noting reliability and relevancy
requirement for expert testimony).
30
6. Plaintiffs’ Relevancy Argument Regarding Lewis v. Ethicon, Inc.
In this case, the plaintiffs raise an additional argument as to the relevancy of Dr. Barker’s
testimony. The plaintiffs argue that “[t]he crux of Dr. Barker’s opinions, and hence his role in
this case, is to provide expert evidence of the precise design engineering failure in BSC’s
meshes.” (Pls.’ Resp. re: Barker [Docket 130], at 16). As a result, the plaintiffs contend that “Dr.
Barker’s opinions provide the precise evidence that the plaintiff in Lewis v. Ethicon, Inc. lacked
and warranted a directed verdict[,]” and that, therefore, his testimony is helpful to a jury. (Id.
(citing Lewis trial transcript)).
As I explained in Sanchez, I find Dr. Barker’s method to be unreliable, and I exclude his
opinions on this basis. As a result, I do not need to address the relevancy of Dr. Barker’s
testimony. See Daubert, 509 U.S. at 594–95 (noting requirement that expert testimony be both
reliable and relevant). However, I note that the portions of the Lewis trial transcript in which the
plaintiffs cite in support of their argument refer to specific causation. (See Pls.’ Ex. A Lewis Trial
Tr. [Docket 130-1], at 60:5–22, 62:10–15). Dr. Barker does not offer specific causation opinions
here.
7. Dr. Barker’s Proposed State of Mind Testimony
BSC argues that Dr. Barker is unqualified to opine as to product design or testing and that
his proposed state of mind testimony is inadmissible. In Sanchez, BSC made these same
arguments. However, I did not reach the issue of Dr. Barker’s qualifications as to product design
or testing because I found his state of mind testimony to be impermissible expert testimony:
Dr. Barker contends that “BSC designed the Pinnacle . . . to meet the specification
of substantial similarity to products pre-existing on the market, rather than engage
in the engineering and design process of development of a safe and effective
medical product (even for one similar to a pre-existing product in the market)”
31
and that this “is inconsistent with appropriate medical device design principles.”
(Barker Report [Docket 71-1], at 4, 15). These opinions relate to the state of mind
of BSC and are, thus, EXCLUDED.
Sanchez, 2014 WL 4851989, at *10. I ADOPT this reasoning from Sanchez in this case.
Therefore, I GRANT BSC’s Motion to Exclude the Opinions and Testimony of Thomas
H. Barker, Ph.D. [Docket 90] on the grounds explained above and in Sanchez. See id. at *5–10.
D. Motion to Exclude the Testimony of Jimmy W. Mays, Ph.D. & Samuel P. Gido,
Ph.D.
BSC seeks to exclude the opinions of Dr. Jimmy W. Mays and Dr. Samuel P. Gido. Dr.
Mays is a Distinguished Professor of Chemistry at the University of Tennessee, and Dr. Gido is
an Associate Professor of Polymer Science and Engineering at the University of Massachusetts
Amherst. (Mays & Gido Report [Docket 93-1], at 2, 4). Both have worked extensively in the area
of polymer materials. Drs. Mays and Gido issued a joint expert report examining and assessing
the polypropylene material mesh BSC used in the Pinnacle product. (Id. at 5). In their report,
Drs. Mays and Gido conclude that (1) polypropylene is susceptible to oxidation and degrades by
an oxidative mechanism in the body; (2) analysis of explanted BSC Pinnacle mesh shows clear
signs of oxidative degradation; and (3) the Pinnacle is thus defective and not suitable to serve as
a permanent implant. (Id.). The report states that Drs. Mays and Gido relied upon their training
and experience, provided materials, and underlying data from the testing in forming their
opinions. (Id.). However, as discussed below, the deposition testimony proves otherwise. The
reasoning in Sanchez, et al. v. Boston Scientific Inc., No. 2:12-cv-05762, 2014 WL 4851989, at
*24–30 (S.D. W. Va. Sept. 29, 2014), substantially reflects the court’s view of these issues as
presented in this case. To the extent that there are differences in fact and exhibits, the court does
not find them sufficiently material. The Sanchez excerpts quoted throughout are to explicate the
32
conclusions the court reaches below.
BSC argues that Drs. Mays and Gido’s testing and the clinical conclusions drawn from
that testing must be excluded because their testing is unreliable and their opinions are irrelevant.
(BSC’s Mem. of Law in Supp. of its Mot. to Exclude the Ops. & Test. of Jimmy W. Mays, Ph.D.
& Samuel P. Gido, Ph.D (“BSC’s Mem. re: Mays & Gido”) [Docket 93], at 2). Additionally,
BSC argues that Drs. Mays and Gido’s opinions are unreliable because they are litigation driven,
as well as a poor fit that would not be helpful to the jury. (Id.). Finally, the defendant argues that
some of the opinions offered by Drs. Mays and Gido should be excluded because they opine
about BSC’s state of mind and make inadmissible legal conclusions. (Id.).
1. Chemical & Microscopic Testing
a. Background
As BSC takes particular issue with Drs. Mays and Gido’s testing of the Pinnacle explants,
I will briefly discuss their testing procedures and results. Drs. Mays and Gido received exemplars
of Pinnacle and Obtryx products on September 24, 2013. (Mays & Gido Report [Docket 93-1], at
24). These exemplars were used as a control. (Id. at 18). The plaintiffs’ counsel, Ms. Jennifer
Black, arranged for Drs. Mays and Gido to also receive Pinnacle and Obtryx mesh explants from
Steelgate, a repository for explanted transvaginal mesh. (Aff. of Jennifer Black [Docket 134-5],
¶¶ 5–6, 12). Ms. Black identified the available BSC Pinnacle and Obtryx explants by crossreferencing the firm’s client list with the patient list retained by Steelgate. (Id. ¶¶ 9–11). Ms.
Black determined that there were a total of fourteen such explants at Steelgate. (Id. ¶ 8). After
identifying these explants, Ms. Black requested that the explants be sent to Dr. Gido with the
appropriate chain of custody. (Id. ¶ 12).
33
On October 1, 2013, Dr. Gido received the fourteen explants. (Mays & Gido Report
[Docket 93-1], at 24). The explants were sealed in plastic containers and came with chain of
custody documentation. (Id.). Only eleven of the fourteen explants contained mesh suitable for
testing. (Id.). Dr. Gido proceeded to conduct three microscopic analyses of the eleven explants:
(1) Scanning Electron Microscopy (“SEM”) to take pictures of the mesh fibers at high
magnification and compare those images to the images published in the literature; (2) Energy
Dispersive Spectroscopy (“EDS”) to determine if there was oxygen in the mesh fibers; and (3)
Transmission Electron Microscopy (“TEM”) to identify amorphous regions in the mesh fibers
that are more susceptible to oxidation. (Id. at 18).
Utilizing Steelgate’s chain of custody, Dr. Gido sent the samples to Dr. Mays on October
22, 2013. (Id.). Only four of the samples sent by Dr. Gido had sufficient amounts of
polypropylene mesh adequate for testing by Dr. Mays. Dr. Mays conducted three chemical
analyses of the four samples: (1) Fourier Transform Infrared Spectroscopy (“FTIR”), a testing
instrument that uses infrared to identify chemical groups containing oxygen; (2) Gel Permeation
Chromotography (“GPC”), a test that separates molecules by size and quantifies the molecular
weight of the polymer, which allowed Dr. Mays to estimate the reduction in molecular weight of
the polypropylene explants; and (3) Thermogravimetric Analysis (“TGA”) to determine if there
were other additives or inorganic materials in the mesh. (Mays Dep. [Docket 93-2], at 49–50).
Drs. Mays and Gido included the following summary of results in their expert report:
34
(Mays & Gido Report [Docket 93-1], at 19). However, Dr. Mays did not include the protocol or
results of the TGA or TEM in the expert report. Instead, for the TGA, he produced that
information to BSC in the form of his handwritten notes, which were taken from his lab
notebook. (Mays Dep. [Docket 93-2], at 49–50).
b. Reliability
With respect to the reliability of Drs. Mays and Gido’s testing, BSC makes several
specific arguments. However, I have previously reviewed the reliability of Drs. Mays and Gido’s
testing under Daubert and found their opinions unreliable because they (1) failed to control for
error or bias and (2) did not establish or adhere to testing protocols. See Sanchez, 2014 WL
4851989, at *26. In Sanchez, I made the following findings:
i. Lack of Control for Error or Bias
Although plaintiffs’ counsel selected the samples, counsel explained that these
were the only Pinnacle and Obtryx samples available in the Steelgate repository.
Therefore, unlike Lewis [v. Ethicon, Inc.], where Dr. Klinge did not indicate
whether the meshes examined constituted a large sample size of the repository’s
collection, here, these were the only samples available for testing. Furthermore,
certain samples were not tested because they did not have enough mesh, not
because of bias. Despite the differences in these two cases, the fact that Drs. Mays
and Gido’s sample was not very large or randomly selected affects the reliability
of their testing. See Edwards v. Ethicon, No. 2:12-cv-09972, 2014 WL 3361923,
35
at *39 (S.D. W. Va. July 8, 2014) (excluding plaintiffs’ expert’s analysis of pelvic
mesh explants generally). Drs. Mays and Gido “[have] given no explanation as to
whether [theirs] is a representative sample size . . . . Therefore I have no
information as to the potential rate of error inherent in [their] observations.”
Lewis, 2014 WL 186872, at *8. Additionally, Drs. Mays and Gido have no
knowledge of how the material they examined was explanted or how it was
preserved and handled before reaching their lab. (Mays Dep. [Docket 99-1], at
304–05).
Dr. Gido conducted EDS testing to differentiate between polypropylene fibers and
biological material. In their report, Drs. Mays and Gido state that “the presence or
absence (or near absence) of nitrogen as detected by EDS is the key discriminator
between clean polypropylene fibers from which valid conclusions can be drawn
or biomaterial covered fiber from which conclusions are less straightforward.”
(Mays & Gido Report [Docket 98-1], at 31). At his deposition, Dr. Gido
acknowledged that on a relatively clean sample “there might be a little blip of
nitrogen [in the EDS] and the question is, you know, is that nitrogen statistically
significant.” (Gido Dep. [Docket 99-2], at 154). However, Dr. Gido never
determined the significance of potential “blips,” although the data was available.
(Id. (“I did not do that analysis, although the data is all there, and if that analysis
needs to be done, I would contend it is not a new opinion.”)).
Similarly, in their report, Drs. Mays and Gido state that “[w]e need to base our
conclusions related to fiber degradation on clean polypropylene fibers and make
sure we are not looking at biological films coating the fibers.” (Mays & Gido
Report [Docket 98-1], at 31). However, both Dr. Mays and Dr. Gido admit in
their depositions that their inconsistent bleach treating techniques may have failed
to remove all biologic material from the test samples. (See Mays Dep. [Docket
99-1], at 208; see also Gido Dep. [Docket 99-2], at 165). When asked explicitly
whether they completed a statistical analysis or calculated a rate of error based on
their tests, Dr. Gido admitted they did not. (Gido Dep. [Docket 99-2], at 154–55).
The key Daubert inquiry is “whether the analysis undergirding the experts’
testimony falls within the range of accepted standards governing how scientists
conduct their research and reach their conclusions.” Daubert II, 43 F.3d at 1317.
The small sample size and Drs. Mays and Gido’s failure to determine the
statistical significance of their results call into the question the reliability of their
methods. Although Daubert is a flexible inquiry, these facts weigh heavily against
the reliability of their opinions.
ii. Failure to Establish or Adhere to Testing Protocol
First and most simply, Dr. Mays states that “SEM is a very common tool,” but
when asked if he prepared any written methodology before completing the SEM
36
testing, he admits that he did not. (Mays Dep. [Docket 99-1], at 162). In addition,
Dr. Mays and Dr. Gido both reference Dr. Gido’s completely subjective cracking
standard he came up with for purposes of their testing. Dr. Mays admits that the
standard cannot be found in any published material, and Dr. Gido admits that he
has never created or used a cracking standard before. (See id. at 18; see also Gido
Dep. [Docket 99-2], at 161).
Expanding on the brief discussion above, while the samples were with Dr. Gido
for testing, Dr. Mays asked Dr. Gido to try bleach cleaning one of the explants to
see if it was effective. (Gido Dep. [Docket 99-2], at 167). Dr. Gido used a 6%
bleach concentration on explanted sample 11. (See id. at 193; Mays & Gido
Addendum Report [Docket 111-5], at 2). In comparison, Dr. Mays used a 7.8%
concentration to clean the explants and controls before testing. (See Mays & Gido
Report [Docket 98-1], at 33). The bleach treatments were clearly inconsistent.
Additionally, Drs. Mays and Gido have no explanation as to why a discussion of
this testing was “mistakenly” omitted from their original report. (Mays Dep.
[Docket 99-1], at 202).
Another mistake occurred after Dr. Gido returned the samples, and he discovered
that he failed to conduct an EDS test on one of them, which he attributed to a
mere oversight. (Gido Dep. [99-2], at 214–15). Finally, Dr. Mays conducted TGA
testing on the explants to determine what additives were in the mesh, but for some
reason did not include the results in their expert report. (Compare Mays Dep.
[Docket 99-1], at 50, with Mays & Gido Report [Docket 98-1]).
Although Drs. Mays and Gido performed tests that are supported by the literature,
the haphazard application of these tests, errors, and changes to their report lead to
the conclusion that their methodology is unreliable. Vigorous adherence to
protocols and controls are the hallmarks of “good science.” See Black v. RhonePoulenc, Inc., 19 F. Supp. 2d 592, 603 (S.D. W. Va. 1998). Accordingly, I FIND
that the testing performed by Drs. Mays and Gido is unreliable, and therefore,
EXCLUDED.
Sanchez, 2014 WL 4851989, at *26–28. The parties in this case assert the same arguments
regarding the reliability of Drs. Mays and Gido’s testing that I addressed in Sanchez, and I
ADOPT my prior ruling on the reliability of Drs. Mays and Gido’s testing.
2. Expert Opinions Not Based on Testing 5
5
I previously allowed a joint expert report, see In re C. R. Bard, Inc., 948 F. Supp. 2d 589, 644 (S.D. W. Va. 2013)
(discussing the “Exponent Experts”), and there is “no reason to think the practice [is] always and inherently
impermissible” under Rule 26. Dale K. Barker Co., P.C. v. Valley Plaza, 541 F. App’x 810, 815 (10th Cir. 2013)
37
a. Background
While BSC argues that Drs. Mays and Gido’s unreliable testing should be excluded
entirely, the plaintiffs respond by explaining that the testing “merely confirmed what [Drs. Mays
and Gido] have long known because of their training, experience, and peer-reviewed published
scientific literature.” (Pls.’ Mem. in Opp’n to BSC’s Mot. to Exclude Test. of Pls.’ Expert (“Pls.’
Mem. re: Mays & Gido”) [Docket 134], at 4). 6 The plaintiffs contend that both the expert report
and depositions support this explanation; however, they conveniently choose to cite only Dr.
Mays’s deposition in support of their proposition. (See id. at 4–5; see also Mays Dep. [Docket
134-3], at 65 (“I believe all of my conclusions are ones that one could reach simply by looking at
published literature on polypropylene that’s been implanted into the human body combined with
the knowledge of chemistry and polymer science and the behavior of polymeric materials.”); id.
at 140 (“So my opinion is based on my experience as a scientist, as a chemist. It’s based on all
the literature we looked at. It’s based also on the testing that we did in this report.”); id. at 260
(“My opinion in this case, and it was my opinion before I got involved in this case, is that
polypropylene is so fundamentally susceptible to oxidative degradation that it’s a poor choice for
permanent implant where there’s going to be tissue ingrowth.”)).
The plaintiffs fail to point out or cite Dr. Gido’s deposition testimony, which takes the
opposite position. Dr. Gido explicitly states that “we’re making this statement based on our own
(explaining that “[c]o-authored expert reports aren’t exactly uncommon”). For example, in Barker, the Tenth Circuit
allowed a joint report when both experts “reviewed the same materials, and, working together, came to the same
opinions.” Id. at 816. However, when a joint report is not built on a reliable foundation, and instead, is confusing
and contradictory, it becomes problematic and potentially inadmissible. See id. (“[I]f, for example, it isn’t clear
whether both experts adhere to all of the opinions in the report and they do not delineate which opinions belong to
which expert.” (citing Dan v. United States, No. CIV 01-25 MCA/LFG-ACE, 2012 WL 34371519, at * 2–3, *5
(D.N.M. Feb. 6, 2002)).
6
Plaintiffs also argue that in addition to Drs. Mays and Gido’s reliance on other sources, their testing is reliable,
which is the same argument I considered and rejected above.
38
study and our own results. We’re not getting it from the literature.” (Gido Dep. [Docket 134-2],
at 233). While Dr. Mays describes the testing as “confirmatory,” Dr. Gido highlights the fact that
he completed the testing first and then “got into the literature.” (Mays Dep. [Docket 134-3], at
65; Gido Dep. [Docket 134-2], at 50). Dr. Gido admits that he had not reached his opinions
before testing and emphasizes how important the data was in drafting his portions of the report.
(See Gido Dep. [Docket 134-2], at 51 (“I would suspect the same – you know, I would probably
conclude that there would likely be a problem with polypropylene, but I would not be as sure of
it as I am having seen data that I took with my own hands and seen Dr. Mays’s data.”)). Based
on the depositions, Drs. Mays and Gido clearly have different opinions regarding the nature and
influence of the testing they performed.
I have determined that Drs. Mays and Gido’s testing was unreliable, and Dr. Gido states
that his opinions are based solely on the testing. Accordingly, I FIND that Dr. Gido’s opinions
are EXCLUDED. However, as discussed more fully below, because Dr. Mays indicates that he
relied primarily on other scientific sources, I FIND that Dr. Mays is permitted to testify
generally about polypropylene degradation based on his experience and review of the literature.
b. Reliability
BSC argues that Dr. Mays’s opinions are not reliable because they are litigation driven,
not scientific, and not fair and balanced. With respect to the argument that Dr. Mays’s expert
testimony is litigation driven, I refer back to my above ruling that an expert’s formulation of his
opinion for the purposes of litigation does not, by itself, justify that expert’s exclusion. As I
FIND Dr. Mays’s opinions otherwise reliable, I need not address this argument further.
Next, BSC contends that Dr. Mays “selectively cite[s] several articles” and “fail[s] to
39
include contrary statements or literature in [his] report.” (BSC’s Mem. re: Mays & Gido [Docket
93], at 14). I have previously reviewed the reliability of Dr. Mays’s opinions under Daubert. See
Sanchez, 2014 WL 4851989, at *29. The parties in this case assert the same arguments regarding
the reliability of Dr. Mays’s expert opinions that I addressed in Sanchez. In Sanchez, I ruled as
follows:
Dr. Mays cites eight different studies supporting his proposition that
polypropylene is not suitable as a permanent implant, many of which are the same
peer-reviewed, published literature relied upon by other experts in previous MDL
trials. See Lewis, 2014 WL 186872, at *11 (discussing plaintiffs’ expert Dr. Uwe
Klinge). Clearly these are studies reasonably relied upon in the field of polymer
science. Additionally, Appendix C of the report lists 68 scholarly articles Dr.
Mays considered in making his opinions, as well as hundreds of other documents.
(Mays & Gido Expert Report App. C [Docket 111-3], at 1–22). If [BSC] take[s]
issue with Dr. Mays’s failure to review or cite particular documents, this goes to
the weight of his opinion, not its admissibility, and can be addressed on crossexamination.
Sanchez, 2014 WL 4851989, at *51.
Finally, BSC argues that Dr. Mays’s opinions are a poor fit and would not be helpful to a
jury because Dr. Mays was not able to correlate degradation to any clinical symptoms in an
individual patient. However, as I stated in Sanchez,
I have repeatedly held that general causation testimony, including degradation
opinions, is admissible under Rule 702, even if the plaintiffs might fail to carry
their burden as to specific causation. See, e.g., Huskey, 2014 WL 3362264, at *13.
Additionally, in his deposition, Dr. Mays references complications that can arise
in patients as a result of degradation. (Mays Dep. [Docket 99-1], at 131 (“I’m
saying that degradation is the root cause of these devices failing to function the
way they are designed in some cases and then the device not functioning properly
is part of the problem.”)). To the extent that BSC believes degradation is not
clinically significant, it may cross examine Dr. Mays on that issue.
Dr. Mays explicitly states that he relied not only on his knowledge and
experience, but also on scientific literature, which are sufficiently reliable
methods of forming his particular opinion. Accordingly, I FIND that Dr. Mays is
permitted to testify generally that polypropylene is susceptible to oxidation and
40
degrades, without specifically referencing the unreliable testing he conducted with
Dr. Gido.
Sanchez, 2014 WL 4851989, at *51–52. Therefore, I ADOPT my prior ruling on Dr. Mays, as
stated in Sanchez, and FIND that his opinions based on his experience and review of scientific
literature should not be excluded.
3. State of Mind
Dr. Mays offers two opinions regarding BSC’s state of mind and its knowledge of risks
associated with polypropylene. (See Mays & Gido Report [Docket 93-1], at 5 (“BSC did not take
into account polypropylene’s propensity for oxidation during design of its Pinnacle and Obtryx
mesh.”); id. at 17 (“If the developers of Pinnacle and Obtryx were ignorant of this information on
implantation of PP materials then they were incompetent to be in their line of business. If they
were aware of these facts and chose to proceed anyway, they were taking an unconscionable,
calculated gamble with the lives and wellbeing of others for the sake of their own profits.”)). As
I previously discussed, expert opinions on BSC’s knowledge or state of mind are not helpful to
the jury. See Fed. R. Evid. 702. Therefore, these opinions are EXCLUDED.
4. Legal Opinions
Dr. Mays offers two opinions that draw legal conclusions from the facts. (See Mays &
Gido Report [Docket 93-1], at 17; id. at 19 (“The results of our own testing completely support
and greatly strengthen this opinion that choice of PP as the material for the explants we tested
rendered them unacceptably susceptible to degradation and was thus incompetent and or
negligent.”) (emphasis added)). In the Fourth Circuit, “opinion testimony that states a legal
standard or draws a legal conclusion by applying law to the facts is generally inadmissible.”
United States v. McIver, 470 F.3d 550, 562 (4th Cir. 2006). Whether BSC failed to act as a
41
reasonable and prudent medical device manufacturer is a question for the jury. To be clear, Dr.
Mays may offer opinions that, as a polymer scientist, he does not believe the Pinnacle is suitable
to serve as a permanent implant, but his opinions cannot be phrased as legal conclusions.
Therefore, these statements are EXCLUDED.
In conclusion, BSC’s Motion to Exclude the Opinions of Drs. Mays and Gido [Docket
92] is GRANTED IN PART and DENIED IN PART.
E. Motion to Exclude the Opinions & Testimony of Emery Salom, M.D., FACOG
Dr. Salom, a licensed urogynecologist in Florida, began treating Plaintiff Dotres in 2008
when she complained of uterine and bladder prolapse. Dr. Salom treated her condition with the
Pinnacle mesh implant. Plaintiff Dotres offers Dr. Salom to testify about his examination of Ms.
Dotres, his treatment of Ms. Dotres’s condition with the Pinnacle mesh system, Ms. Dotres’s
post-surgery complications, and his opinion regarding the cause of Ms. Dotres’s post-surgery
pelvic pain and dyspareunia.
BSC asserts two challenges to Dr. Salom’s opinion testimony. First, BSC argues that the
plaintiff failed to submit a proper expert report under Federal Rule of Civil Procedure 26(a)(2),
and so the court must limit Dr. Salom’s testimony to opinions based solely on his care and
treatment of Ms. Dotres. Second, BSC maintains that even if the court excuses the improper
expert report, Dr. Salom’s testimony must nevertheless be limited in accordance with Daubert’s
reliability and relevancy requirements. For the reasons discussed below, BSC’s motion is
DENIED.
1. Federal Rule of Civil Procedure 26(a)(2)(B)
Under Rule 26, “a party must disclose to the other parties the identity of any witness it
42
may use at trial.” Fed. R. Civ. P. 26(a)(2)(A). Furthermore, “if the witness is one retained or
specially employed to provide expert testimony,” a party must accompany this disclosure with a
written report detailing “a complete statement of all opinions the witness will express and the
basis and reasons for them.” Fed. R. Civ. P. 26(a)(2)(B). Failure to provide this information
results in exclusion of the witness at trial “unless the failure was substantially justified or is
harmless.” Fed. R. Civ. P. 37(c). Regarding the testimony of treating physicians, Local Rule 26.1
provides that the disclosures required under Rule 26(a)(2)(B) “shall not be required of physicians
and other medical providers who examined or treated a party . . . unless the examination was for
the sole purpose of providing expert testimony in the case.” L.R. Civ. P. 26.1. When a Rule
26(a)(2)(B) disclosure is not required, as is usually the case for treating physicians, parties must
supply a less stringent disclosure under Rule 26(a)(2)(C), stating the subject matter of the
testimony and providing a summary of the witness’s opinion testimony. Fed. R. Civ. P.
26(a)(2)(C); see also Fed. R. Civ. P. 26 advisory committee’s note (explaining that Rule
26(a)(2)(C) frequently applies to “physicians or other health care professionals . . . who do not
regularly provide expert testimony”).
In accordance with these rules, Plaintiff Dotres submitted a Rule 26 Expert Report for Dr.
Salom (“the Report”). [Docket 95-1]. BSC asserts that the Report constitutes a Rule 26(a)(2)(C)
disclosure rather than the required Rule 26(a)(2)(B) disclosure. Although the former type of
report would be appropriate if Dr. Salom’s testimony focused solely on his treatment of Ms.
Dotres, BSC argues that Dr. Salom’s offered opinion addresses information outside the scope of
his treatment of Ms. Dotres such that the plaintiff should have submitted a full Rule 26(a)(2)(B)
report. Because the Report does not comply with Rule 26, BSC asks this court to exclude all
43
testimony that goes beyond his treatment of Ms. Dotres. Specifically, Dr. Salom should be
precluded from testifying that (1) “there is little long term data to show that the benefits of mesh
augmented procedures outweigh the risks associated with mesh related procedures compared to
native tissue repairs”; and (2) “the sacrospinous ligament fixation as directed by the Boston
Scientific Pinnacle Kit can cause nerve damage that may result in pain in the S2–S4 nerve
distribution.” (BSC’s Mem. in Supp. of Mot. to Exclude the Ops. And Test. of Dr. Emery Salom
[Docket 95] (“BSC’s Mem. re: Salom”), at 5).
In response, the plaintiff has agreed to omit these two disputed opinions from her
questioning of Dr. Salom. (See Pl.’s Resp. in Opp’n to BSC’s Mot. to Exclude the Ops. And
Test. of Dr. Emery Salom [Docket 127] (“Pl.’s Resp. re: Salom”), at 6). Additionally, the
plaintiff has assured the court that she will limit Dr. Salom’s opinion testimony to the causation
of injuries sustained by his patient, Ms. Dotres, as required by In re C. R. Bard, Inc. (Id. at 5
(citing In re C. R. Bard, Inc., 948 F. Supp. 2d 589, 616–17 (S.D. W. Va. 2013)). In reliance on
these assurances, I DENY BSC’s motion on Rule 26 grounds. 7
2. Daubert Challenges to Dr. Salom’s Testimony
I now turn to BSC’s Daubert challenges to Dr. Salom’s testimony. First, BSC seeks to
exclude Dr. Salom’s opinion on the alleged risks of implanting the Pinnacle without properly
cutting it. BSC asserts that Dr. Salom’s testimony about what might have happened had he
conducted the implantation surgery differently fails the relevancy prong of Daubert because it
7
The plaintiff also attempts to argue that because BSC has not filed a Rule 26 report to disclose Dr. Salom as an
expert, BSC should be “prohibited from seeking any opinion testimony on any subject from Dr. Salom.” (Pl.’s Resp.
re: Salom [Docket 127], at 3). Rule 26 only applies to the party offering the witness as an expert. See Fed. R. Civ. P.
26 (a)(2)(A) (“A party must disclose to the other parties the identity of any witness it may use at trial to present
[expert] evidence.”) (emphasis added). Plaintiff Dotres offers Dr. Salom as an expert witness, and only she has the
obligation to disclose him as an expert under Rule 26. BSC is free to cross examine Dr. Salom’s opinions without
having to file a Rule 26 report. If, however, BSC seeks to call Dr. Salom as an expert witness for the defense, then
BSC must file a proper Rule 26 report.
44
does not relate to what actually happened in Ms. Dotres’s case. Plaintiff Dotres has agreed to not
elicit any opinions from Dr. Salom related to the risks of implanting the Pinnacle without cutting
it properly. (See Pl.’s Resp. re: Salom [Docket 127], at 6). As such, I DENY BSC’s argument
under Daubert with respect to this opinion.
Second, BSC seeks to exclude Dr. Salom’s testimony about Ms. Dotres’s current
condition, even though Dr. Salom has not treated Ms. Dotres since March 2012. BSC contends
that Dr. Salom’s opinions on Ms. Dotres’s current medical condition constitute “nothing more
than inadmissible hypothetical speculation and should be excluded.” (BSC’s Mem. re: Salom
[Docket 95], at 9). Plaintiff Dotres has agreed not to elicit opinions from Dr. Salom about Ms.
Dotres’s condition since the last time he treated her in March 2012. (See Pl.’s Resp. re: Salom
[Docket 127], at 6). Therefore, I DENY BSC’s argument under Daubert regarding Dr. Salom’s
testimony to this effect.
I quickly address the plaintiff’s primary response to BSC’s motion to exclude, which is
that if the plaintiff is “limited or precluded from eliciting testimony that is not derived
exclusively from Dr. Salom’s care and treatment of Ms. Dotres, then Boston Scientific must
obviously also be so limited.” (Id. at 3). BSC will of course be bound by the Federal Rules of
Evidence in its questioning of Dr. Salom at trial. First, BSC’s cross-examination of Dr. Salom
will be limited by the scope of the plaintiff’s direct examination. See Fed. R. Evid. 611 (“Crossexamination should not go beyond the subject matter of the direct examination and matters
affecting the witness’s credibility.”). In the event that BSC’s cross-examination violates Rule
611, the plaintiff may object at trial. Second, if BSC calls Dr. Salom as a fact witness, it must
demonstrate that Dr. Salom has “personal knowledge” of the subject matter. Fed. R. Evid.
45
602(a). If the plaintiff wishes to challenge Dr. Salom’s personal knowledge of proffered factual
testimony, she may raise the objection at trial. And under Rule 26, BSC may not call Dr. Salom
as an expert witness for the defense at trial because BSC has not filed a Rule 26 disclosure. In
sum, the substance of a cross-examination leaves a great deal to the court’s discretion, and
questions asked during a deposition do not necessarily reflect what will develop at trial.
Therefore, this Daubert ruling is not the proper forum for the concerns raised in the plaintiff’s
response, and the plaintiff should object at trial if warranted.
For the reasons set forth above, BSC’s Motion to Exclude the Opinions and Testimony of
Dr. Salom [Docket 94] is DENIED.
F. Motion to Exclude the Testimony of Dr. Peggy Pence, Ph.D.
Dr. Pence works as a clinical and regulatory consultant, providing “advice, guidance, and
product development services to pharmaceutical/biopharmaceutical and medical device
companies in the areas of strategic planning, preclinical testing, clinical trials, design and
conduct, and regulatory matters involving the [FDA].” (Pence Report [Docket 97-1], at 1).
During her career, she has accumulated knowledge about and experience with the testing
requirements for medical devices; the development and content of product labeling; and the
procedures necessary to comply with regulatory and industry standards, including those set forth
by the FDA. (See id. at 1–4). In this matter, Dr. Pence offers four opinions: (1) BSC did not
conduct adequate testing of the Pinnacle product prior to placing them on the market; (2) the
Pinnacle product was inadequately labeled; (3) patients could not adequately consent to the
surgical implantation of the Pinnacle due to the misbranding of these products; and (4) BSC
46
failed to meet the post-market vigilance standard of care for their products, leading to further
misbranding. BSC seeks to exclude Dr. Pence’s testimony in its entirety.
I have previously reviewed the opinion testimony of Dr. Pence under Daubert. See
Sanchez et al. v. Boston Scientific Corp., No. 2:12-cv-05762, 2014 WL 4851989, at *32–36
(S.D. W. Va. Sept. 29, 2014). The reasoning in Sanchez substantially reflects the court’s view of
this issue as presented here. To the extent that there are differences in fact and exhibits, the court
does not find them sufficiently material as to the ruling on Dr. Pence. Therefore, I ADOPT my
prior ruling on Dr. Pence as follows and thereby GRANT IN PART and DENY IN PART her
expert opinion.
1. Dr. Pence’s Qualifications
I first address BSC’s argument that this court should exclude Dr. Pence’s opinions
because she lacks the qualifications necessary to make them. BSC maintains that Dr. Pence’s
work as a researcher and consultant does not qualify her to opine about the safety and efficacy of
mesh products, as she attempts to do in her expert report. In BSC’s view, without a medical
degree and without experience in the development of polypropylene mesh, Dr. Pence’s opinions
on BSC’s medical devices cannot withstand Daubert.
In Sanchez, I ruled as follows, and I ADOPT that ruling here:
The absence of a medical degree on Dr. Pence’s curriculum vitae does not call
into doubt Dr. Pence’s demonstrated knowledge about and experience with
medical devices like the Pinnacle. Dr. Pence has over forty years of experience in
the research and development of medical devices. (Pence Report [Docket 118-1],
at 1). Over that time, she has accumulated knowledge that is relevant to this case,
such as the design of clinical trials for diseases of the female genital system, the
clinical testing of novel medical devices, and the content of product labeling.
Accordingly, . . . I FIND that Dr. Pence is qualified to render the opinions set
forth in her expert report, including her opinions about the safety and efficacy of
mesh products and the sufficiency of BSC’s product branding.
47
Sanchez, 2014 WL 4851989, at *33.
2. Dr. Pence’s Opinions on Appropriate Pre-Market Testing
Having found that Dr. Pence is qualified to offer these opinions, I next address whether
her opinions are relevant and reliable. In her report, Dr. Pence opines:
BSC should have performed adequate preclinical and clinical testing of the
Obtryx Sling and Pinnacle PFR Kits prior to marketing to ensure the devices were
reasonably safe for permanent implantation. By its failure to do so, BSC fell
below the standard of care required of a reasonably prudent medical device
manufacturer.
(Pence Report [Docket 97-1], at 44). In reaching this conclusion, Dr. Pence considered the risks
associated with polypropylene mesh (id. at 31–36); the statements in Material Safety Data Sheets
provided by the polypropylene supplier in 2004 indicating that polypropylene should not be used
for permanent implantation in the human body (id. at 36–40); and the developmental history of
BSC products (id. at 41–43).
In Lewis, et al. v. Ethicon, Dr. Pence gave a similar opinion. No. 2:12-cv-4301, 2014 WL
186872, at *18–19 (S.D. W. Va. Jan. 15, 2014). She opined that the defendant did not conduct
the required investigative tests on the specific risks of a transvaginal mesh product, but she failed
to support this opinion with any authority suggesting that the performance of such tests was
needed. Id. at 18. Without a reliable foundation, I excluded Dr. Pence’s opinion as unreliable. Id.
at 19. Here, BSC argues that Dr. Pence’s expert report should again be excluded as unreliable
because it fails to point to any authority requiring BSC to perform the tests that Dr. Pence
believes should have been conducted. The plaintiffs counter that Dr. Pence has revised her report
to fix the deficiencies identified in Lewis. This time around, the plaintiffs argue, Dr. Pence has
“clearly demonstrated that her methodology and opinions were not based upon her ‘professional
48
opinion’ alone” and instead arose from her review of a “voluminous amount of peer-reviewed
scientific articles, data, government codes and regulation, deposition testimony provided in this
litigation, and internal documents received from BSC.” (Pls.’ Resp. in Opp’n To BSC’s Mot. to
Exclude Dr. Peggy Pence [Docket 142], at 5).
In Sanchez, I agreed with the plaintiffs and concluded that
Dr. Pence’s bolstered expert report [Docket 118-1] has tempered my previous
concerns about the reliability of her opinion on this issue. Dr. Pence has cited to
multiple sources that stress the importance of running clinical trials before
incorporating mesh materials into a surgical product. For instance, she describes a
2006 study conducted by the French National Authority for Health (“HAS”), in
which it evaluated the safety and efficacy of vaginally implanted mesh for the
treatment of genital prolapse. (Pence Report [Docket 118-1], at 9). HAS
concluded that “the use of mesh implants for transvaginal correction of genital
prolapse remained a matter of clinical research” and recommended prospective
studies on the anatomical and functional outcomes of mesh implantation, the midto long-term effects, possible adverse events like erosion, and the management of
erosions and retractions. (Id. at 10). Dr. Pence also discusses the
recommendations of the National Institute for Health and Care Excellence, which
include the warning that transvaginal mesh repair “should be used with special
arrangements for clinical governance, consent and audit or research.” (Id. at 43).
In contrast with Lewis, Dr. Pence’s opinion in this case is backed by authoritative
studies that recommend the performance of clinical trials and long-term followups before using polypropylene mesh. Thus, her opinion on the inadequacy of
BSC’s pre-market testing is more than a bare declaration of her professional
opinion. Accordingly, I FIND that Dr. Pence’s methodology is reliable under
Daubert and DENY BSC’s motion with respect to this opinion.
Sanchez, 2014 WL 4851989, at *34. I ADOPT this ruling here.
3. Dr. Pence’s Opinions on the Adequacy of BSC’s Product Labels
Dr. Pence proffers two opinions regarding the labeling of the Pinnacle. First, she states
that “BSC marketed [these products] without adequate instructions for use throughout the life of
these products . . . , in particular, without adequate warnings, precautions, and information about
the likelihood and extent of potential risks.” (Pence Report [Docket 97-1], at 62). Second, she
49
states that “patients implanted with the Obtryx Sling or Pinnacle mesh were prevented
from . . . giving true informed consent as a result of BSC’s inadequate professional and patient
labeling.” (Id. at 63). She then offers a list of warnings and risks that she believes should have
been included in the products’ instructions for use (“IFU”) and patient brochures.
BSC asserts that these opinions should be excluded because they relate to BSC’s
deviation from the branding requirements of the Food, Drug, and Cosmetic Act (“FDCA”),
which is irrelevant in this case and consequently unhelpful to the jury. The plaintiffs agree that
whether BSC violated the FDCA is not relevant and that Dr. Pence will not offer an opinion on
that issue. The plaintiffs stress, however, that Dr. Pence’s testimony about labeling is relevant to
the plaintiffs’ failure to warn claim. To assess the validity of this claim, the jury will need to
understand what information should be included in IFUs and patient brochures but was not
included by BSC—the plaintiffs argue that Dr. Pence can provide such understanding to the jury.
I agree that such testimony might help guide the jury in reaching a verdict on these state law
claims, which consider the appropriateness of product labeling, and as such, her opinions are
relevant. 8 See, e.g., Church v. Wesson, 385 S.E.2d 393, 396 (W. Va. 1989) (explaining that in
failure to warn cases, “the focus is not so much on a flawed or physical condition of the product,
as on its unsafeness arising out of failure to adequately label, instruct or warn” (quoting
Morningstar v. Black & Decker Mfg. Co., 253 S.E.2d 666, 682 (W. Va. 1979))).
BSC adds that even if Dr. Pence’s opinions on BSC’s labeling practices are relevant, they
lack a reliable basis. In BSC’s view, Dr. Pence does not provide any authority supporting her
8
In Lewis, et al. v. Ethicon, Inc., I concluded that Dr. Pence’s opinions on product labeling would “confuse and
mislead the jury” because the state law claims of failure to warn no longer existed in the case. 2:12-cv-4301, 2014
WL 186872, at *19 (S.D. W. Va. Feb. 3, 2014). Here, however, the failure to warn claim is still pending, and so my
conclusions in Lewis are inapposite on this point.
50
assertion that BSC’s labeling fell short of the standard of care, and instead, she simply insists that
BSC “should have gone further.” (BSC’s Mem. in Supp. of its Mot. to Exclude the Ops. and
Test. of Peggy Pence (“BSC’s Mem. re: Pence”) [Docket 97], at 8 (quoting Pence Dep. [Docket
97-3], at 328:3)). In response, the plaintiffs point to Dr. Pence’s reliance on medical publications
and the FDA’s Manufacturer and User Facility Device Experience database as evidence that Dr.
Pence supported her opinions with authority. (See Pence Report [Docket 97-1], at 49–50).
Again, the reasoning in Sanchez reflects the court’s view of this issue as presented here,
and I ADOPT the Sanchez ruling as quoted below:
Indeed, Dr. Pence cites to various publications and data throughout her
report. However, the information she references—literature and data on the
reported complications associated with Pinnacle mesh—does not go to the heart
of her opinion—that BSC failed to meet the “standard of care required of a
medical device manufacturer” in its deficient labeling of its product. (Id. at 63). In
other words, although this authority demonstrates that complications occurred, it
does not provide any guidance as to whether these complications should have
been included as warnings in the Pinnacle’s IFU. Eliminating this peripheral
information, Dr. Pence is left with ipse dixit sources like “the standard of care”
(id.) and “a matter of ethics” (id. at 61), both of which fall short of Daubert’s
reliability prong. See Daubert, 509 U.S. at 594 (explaining the importance of
ascertainable “standards” to govern the expert’s methodology in reaching his
opinion).
Dr. Pence also utilizes FDCA provisions and FDA regulations to craft
criteria for the information that should be included in medical device labeling.
(See Pence Report [Docket 118-1], at 62 n.257–59, 63 n.260–61). As explained
above, this may very well be relevant to the state law claim of failure to warn.
Daubert, however, advises courts to keep in mind the other rules of evidence
when evaluating expert testimony. See Daubert, 509 U.S. at 595 (“Throughout, a
judge assessing a proffer of expert scientific testimony under Rule 702 should
also be mindful of other applicable rules. . . .). Rule 403, which permits exclusion
of relevant evidence “if its probative value is substantially outweighed by danger
of unfair prejudice, confusion of the issues, or misleading the jury,” Fed. R. Evid.
403, carries particular significance in Daubert decisions because “[e]xpert
evidence can be both powerful and quite misleading.” Daubert, 509 U.S. at 595
(internal quotations omitted). Here, expert testimony about the requirements of
the FDCA, which are not at issue in this case, could lead to more confusion about
51
the failure-to-warn claim than enlightenment. The jury might think that the FDA
regulations govern warning requirements in [West Virginia], whereas Dr. Pence is
actually using the FDA regulations as a model for the contents of labeling
materials. Given that the probative value of expert testimony on FDA
requirements is substantially outweighed by the risk of jury confusion, I cannot
admit Dr. Pence’s testimony as it relates to the FDCA or FDA regulations. See
Lewis v. Johnson & Johnson, 991 F. Supp. 2d 748, 755 (S.D. W. Va. 2014)
(agreeing that “alleged shortcomings in FDA procedures are not probative to a
state law products liability claim”) (internal quotations omitted).
In sum, the only basis for Dr. Pence’s opinions on the adequacy of BSC’s
product labeling is violation of the FDCA and FDA regulations. Such a violation,
however, is not probative to the claims at issue. Moreover, asserting a violation of
the FDCA is a legal conclusion, not an expert opinion. Accordingly, Dr. Pence’s
opinion testimony on BSC’s labeling practices, both in the IFU and the patient
brochure, is EXCLUDED.
Sanchez, 2014 WL 4851989, at *35–36.
4. Opinion on Post-market Vigilance
In her last opinion, Dr. Pence proffers that BSC “deviated from the standard of care by its
failure to report to [the] FDA a number of adverse events that met the criteria for Medical Device
Reporting, rendering the Obtryx and Pinnacle devices misbranded as a result of failure to furnish
information requested under Section 519 of the FDCA.” (See Pence Report [Docket 97-1], at
83). BSC argues that whether BSC “reported adverse events to the FDA has no bearing on
whether Boston Scientific provided adequate warnings or whether the Pinnacle was defective.”
(See BSC’s Mem. re: Pence [Docket 97], at 9).
For the reasons explained in Sanchez, I agree with BSC.
Dr. Pence cites to FDA public health notifications, the FDA’s corporate warning
letter to BSC, and the FDCA’s Medical Device Reporting regulations. Contrary to
the plaintiffs’ assertions, however, the FDCA’s reporting requirements and BSC’s
alleged violation of them have minimal relevance. First, the plaintiffs have not
brought any claims concerning the FDCA. Second, even if an explanation of
BSC–FDA communications could shed light on the state law claims at issue,
testimony on whether or not BSC complied with the FDCA would constitute an
52
impermissible legal conclusion rather than an expert opinion. And
finally, . . . opinion testimony on the labyrinth of reporting regulations within the
FDCA has little probative value compared to the substantial risk of jury
confusion, particularly when both parties agree that “whether, how, and when
BSC communicated safety information to the FDA is irrelevant.” (See Pls.’ Resp.
re: Pence [Docket 122], at 17). Accordingly, . . . I EXCLUDE Dr. Pence’s
opinions on post-market vigilance.
Sanchez, 2014 WL 4851989, at *36.
In conclusion, Dr. Pence can testify on pre-market testing, but her opinions on the
adequacy of product labels and the reporting of adverse events to the FDA are EXCLUDED. As
such, BSC’s Motion to Exclude Peggy Pence [Docket 96] is GRANTED IN PART and
DENIED IN PART.
G. Motion to Exclude the Testimony of Dr. Mark Slack & Motion for Leave to File
Supplemental Brief to Its Motion to Exclude Testimony of Dr. Mark Slack
Pending before the court are two motions by BSC regarding Dr. Mark Slack. The first
[Docket 98] is a typical Daubert motion seeking to limit the opinions of Dr. Slack. The second
[Docket 147] is a Motion for Leave to File Supplemental Brief to Its Motion to Exclude the
Testimony of Dr. Mark Slack (“Motion for Leave”). In its Motion for Leave, BSC seeks to file a
supplemental brief in light of Dr. Slack’s deposition, which had not taken place at the time of the
original filing. However, because I GRANT BSC’s Daubert motion regarding Dr. Slack, as
discussed below, no further briefing is necessary. Accordingly, BSC’s Motion for Leave is
DENIED.
Dr. Slack is a consultant gynecologist and practicing urogynecologist in the United
Kingdom. (Slack Report [Docket 99-1], at 1). Eighty-five percent of his daily practice involves
dealing with the management of prolapse and incontinence. (Id.). Dr. Slack opines on the
following topics as they relate to BSC’s mesh products: (1) pelvic floor anatomy and pelvic floor
53
dysfunction; (2) research and testing necessary for marketing and launch; (3) directions for use
(“DFU”); and (4) physician training. (Id. at 5). BSC does not challenge Dr. Slack’s opinions
regarding pelvic floor anatomy and pelvic floor dysfunction. BSC seeks to exclude Dr. Slack’s
opinions on the remaining three topics because he is unqualified and fails to offer any reliable
basis for his opinions. (BSC’s Mem. of Law in Supp. of its Mot. to Limit the Ops. & Test. of
Mark Slack, M.D. [Docket 99], at 1–2). Additionally, the defendant contends that Dr. Slack’s
report largely consists of improper expert testimony including: (1) narrative testimony; (2)
conclusory statements regarding BSC’s state of mind; and (3) improper legal conclusions. (Id. at
2). As discussed below, Dr. Slack’s opinions should be excluded to the extent challenge and,
accordingly, BSC’s motion to limit his opinions is GRANTED.
Much of Dr. Slack’s export report is a narrative review of corporate documents and his
opinions are riddled with improper testimony regarding BSC’s state of mind and legal
conclusions. (See, e.g., Slack Report [Docket 99-1], at 13 (“Boston Scientific had an obligation
to critically evaluate all of the potential complications and their consequences, in order to
adequately warn physicians and patients. Boston Scientific did not satisfy their obligation by
failing to study the grave consequences of attempting to treat mesh complications, and did not
recognize or admit that the devices might introduce too much risk and should be studied before
being marketed.”); id. at 16 (“Boston Scientific recognized the problems created by not having
clinical data supporting the use of its products.”); id. at 19 (“In March 2007, the Boston
Scientific clinical affairs department knew that if a woman suffered erosion or exposure of mesh
the consequences could be severe including the need for follow up invasive surgery. This
potential significant risk, with the root cause being the mesh itself, was foreseen by Boston
54
Scientific before marketing a single Pinnacle device.”); id. at 20 (“It appears that as early as
2003, Boston Scientific knew that there could be problems with the polypropylene mesh.”); id. at
21 (“Boston Scientific was aware of the significant role physician training has with respect to
patient safety.”); id. at 22 (“Boston Scientific knew prior to the time these products were placed
on the open market that surgeon technique could impact surgical outcome.”); id. at 23 (“It was
Boston Scientific’s goal to create a standardized, reproducible surgical technique.”). In fact, an
entire section of Dr. Slack’s report is about how BSC possessed the same knowledge as the
scientific community regarding the safety and efficacy of pelvic floor products before
introducing their product into the market. (Id. at 10–12).
Dr. Slack also opines on what course of action BSC should have taken; however, the
majority of Dr. Slack’s opinion simply recites what BSC did or did not do. See In re Fosamax
Prods. Liab. Litig., 645 F. Supp. 2d 164, 192 (S.D.N.Y. 2009) (“An expert cannot be presented
to the jury solely for the purpose of constructing a factual narrative based on the record of
evidence.”). As I previously discussed, expert opinions on BSC’s knowledge, state of mind, and
legal conclusions are not appropriate subjects of expert testimony. Therefore, these opinions are
EXCLUDED, and BSC’s Motion to Exclude the Testimony of Dr. Slack [Docket 98] is
GRANTED. 9
H. Motion to Exclude the Testimony of Dr. R. Brian Raybon
Dr. Raybon is a board certified physician in obstetrics and gynecology, specializing in
female pelvic and reconstructive surgery since 1998. (Raybon Report [Docket 101-1], at ¶ 1).
BSC brings two challenges to Dr. Raybon’s testimony. First, BSC contends that Dr. Raybon’s
9
Because Dr. Slack’s impermissible state of mind opinions permeate his entire expert report, I need not address the
remainder of BSC’s specific objections based on reliability.
55
general causation opinions regarding the properties of mesh lack the support of reliable facts or
data. Second, BSC argues that Dr. Raybon did not conduct a proper differential diagnosis in his
specific causation assessment of Ms. Dotres. Thus, BSC asks this court to exclude both the
general and specific causation testimony of Dr. Raybon. For the following reasons, I GRANT
IN PART and DENY IN PART BSC’s motion to exclude. [Docket 101].
1. General Causation Opinions
Dr. Raybon provides several general causation opinions regarding the clinical effects of
the Pinnacle product. He opines that there is an “ongoing irritation of nerves from the body’s
reaction to the Pinnacle mesh”; that Pinnacle mesh causes “chronic inflammation,” leading to
“an environment where pain receptors are repeatedly stimulated”; and that Pinnacle mesh creates
a “toxic environment” resulting in the loss of nerve function. (Raybon Report [Docket 101-1], at
¶ 5). BSC argues that these opinions have “no scientific basis and should be excluded under
Daubert” as ipse dixit opinions. (BSC’s Mem. in Supp. of Mot. to Exclude the Ops. and Test. of
Dr. Brian Raybon [Docket 101] (“BSC’s Mem. re: Raybon”), at 5).
BSC compares Dr. Raybon’s opinion to that of Dr. Zolnoun, the plaintiff’s expert in In re
Bard. I excluded Dr. Zolnoun’s general causation opinion because it centered on “nothing more
than her personal, unscientific observations and opinion that ‘it’s obvious’ that mesh arms are
sharp and can serrate or tear nerves.” In re C. R. Bard, Inc., 948 F. Supp. 2d 589, 604 (S.D. W.
Va. 2013). According to BSC, Dr. Raybon’s general causation opinions similarly have no
scientific basis and arise solely from his own observations, and so his testimony should be
excluded.
In response, the plaintiffs contend that Dr. Raybon’s expert opinion is similar to Dr.
56
Steege’s opinion in Huskey v. Ethicon, Inc. and Edwards v. Ethicon, Inc., whose general
causation opinions I allowed, even though he had never performed a mesh procedure, conducted
studies on implantation of mesh, or examined the biomechanical properties of mesh. Huskey v.
Ethicon, Inc., 2:12-cv-05201, 2014 WL 3362264, at *14–15 (S.D. W. Va. July 8, 2014);
Edwards v. Ethicon, Inc., 2:12-cv-09972, 2014 WL 3361923, at *5 (S.D. W. Va. July 8, 2014).
In those cases, I found that Dr. Steege’s extensive knowledge compensated for his lack of
experience with pelvic mesh. See Huskey, 2014 WL 3362264, at *14 (finding that Dr. Steege’s
report and curriculum vitae demonstrated his knowledge of “the etiology of problems associated
with the implantation of mesh products in gynecological surgery”). In an attempt to analogize
Dr. Raybon’s qualifications with that of Dr. Steege’s, the plaintiffs recount Dr. Raybon’s
extensive experience with pelvic mesh. (See Pls.’ Opp’n to BSC’s Mot. to Exclude the Ops. and
Test. of Dr. Brian Raybon [Docket 128], at 4–6 (outlining Dr. Raybon’s curriculum vitae and
deposition testimony about his qualifications)). From this list of experiences and training, the
plaintiffs assert that Dr. Raybon should be allowed to render expert opinions on the etiology of
complications associated with the Pinnacle device.
Acknowledging Dr. Raybon’s demonstrated experience as a physician, I nevertheless find
that his general causation opinions do not withstand the Supreme Court’s directives in Daubert.
First, Federal Rule of Evidence 702 allows a witness to provide expert opinion testimony only to
the extent that the testimony draws from the expert’s knowledge and expertise. Fed. R. Evid. 702
advisory committee notes. In Edwards and Huskey, for example, Dr. Steege had an extensive and
demonstrated background in the causes of pelvic pain. Edwards, 2014 WL 3361923, at *4–5. He
specialized in the etiology of chronic pelvic pain, vaginal pain, and sexual pain, and he taught
57
courses on the subject. See Edwards, 2014 WL 3361923, at *5. Thus, Dr. Steege’s testimony
about the nerve trauma that can result from mesh implantation was proper. Id. Dr. Raybon’s
opinion testimony, on the other hand, goes beyond his experience with pelvic mesh. He is not a
specialist in the etiology of pelvic and vaginal pain, and his awareness of any relationship
between nerve trauma and mesh products is limited to his experience in diagnosing fifteen to
twenty post-implantation patients. Accordingly, Dr. Raybon’s knowledge, though extensive with
respect to the mechanics of pelvic surgery, does not qualify him to opine on the cause of nerve
trauma in the pelvis. See Gen. Elec. Co. v. Joiner, 522 U.S. 136, 146 (1997) (“A court may
conclude that there is simply too great an analytical gap between the data and the opinion
proffered.”).
Furthermore, Dr. Raybon’s general causation opinions do not satisfy the reliability
requirements of Daubert. Dr. Raybon’s opinion that the Pinnacle mesh causes nerve irritation,
chronic inflammation, and stimulation of pain receptors is based solely on his experience as a
physician. In his deposition, Dr. Raybon concedes that he did not “reference any articles” in
making his opinion because his testimony is based on “knowledge and opinion [he has]
accumulated over the last several [] years.” (Raybon Dep. [Docket 128-3], at 161:15–18). Dr.
Raybon performed no tests or experiments to come to his conclusions nor has he submitted any
relevant work to peer review. This ipse dixit does not survive Daubert’s scrutiny. See Gen. Elec.
Co., 522 U.S. at 146 (“[N]othing in either Daubert or the Federal Rules of Evidence requires a
district court to admit opinion evidence that is connected to existing data only by the ipse dixit of
the expert.”). Accordingly, I EXCLUDE Dr. Raybon’s general causation testimony about the
etiology of Pinnacle mesh. See Brown v. Burlington N. Santa Fe Ry. Co., No. 13-2102, 2014 WL
58
4257854, at *9 (7th Cir. Aug. 29, 2014) (“[E]xperience without reliable, testable methodology is
not sufficient.”).
BSC also objects to Dr. Raybon’s testimony that “at least 30% of [his] patients developed
complications related to Pinnacle mesh, including mesh extrusions and pain.” (BSC’s Mem. re:
Raybon [Docket 101], at 6). This testimony fails under the same rationale described above. Dr.
Raybon provided no objective data to back up this assertion and instead simply relied on
memory.
Q:
In order to generate this report, did you go back and try to count how many
women you actually used the Pinnacle in?
A:
No . . . . This is based on memory.
(Raybon Dep. [Docket 128-3], at 145:19–24). Based on his memory, Dr. Raybon stated that he
used Pinnacle on fifteen to twenty-five patients, and he “sat on” a guess of twenty patients when
calculating the 30% complication rate. (Id. at 146:3). Dr. Raybon conceded that in calculating
this percentage, he did not review medical records of any sort but was “very confident” that six
of his estimated twenty patients had complications with Pinnacle mesh. (Id. at 148:10).
I have previously rejected testimony of this sort that arbitrarily states a complication rate
without explaining the method of doing so. See Lewis, et al. v. Ethicon, Inc., 2:12-MD-02327,
2014 WL 186872, at *8 (S.D. W. Va. Jan. 15, 2014) (excluding the error rate testimony of Dr.
Klinge). Expert opinion must “be connected to data by something more than the ‘it is so because
I say it is so’ of the expert.” Holesapple v. Barrett, 5 F. App’x 177, 180 (4th Cir. 2001).
Accordingly, I EXCLUDE Dr. Raybon’s testimony on the complication rate of his patients.
2. Specific Causation Opinions
Dr. Raybon also provides a case-specific assessment of Ms. Dotres in his expert report.
59
[Docket 101-1]. After reviewing the medical history and deposition testimony of Ms. Dotres, Dr.
Raybon opines that “[t]he voiding dysfunction, pain and defecatory problems that . . . [Ms.
Dotres] currently experiences are, to a reasonable degree of medical certainty, due to the ongoing
irritation of nerves from the body’s reaction to the Pinnacle mesh.” (Raybon Report [Docket
101-1], at ¶ 5). BSC argues that this court should exclude Dr. Raybon’s specific causation
testimony because he did not conduct a proper differential diagnosis in reaching his conclusion.
BSC first asserts that Dr. Raybon’s differential diagnosis is inadequate because he did not
examine Ms. Dotres or interview her, instead basing his opinion solely on review of her medical
history and her deposition. Although performance of physical examinations typically suggests
that the differential diagnosis is reliable, see Westberry v. Gislaved Gummi AB, 178 F.3d 257,
262 (4th Cir. 1999), in some instances, “a physician may reach a reliable differential diagnosis
without personally performing a physical examination.” Cooper v. Smith & Nephew, Inc., 259
F.3d 194, 203 (4th Cir. 2001). Thus, Dr. Raybon’s failure to physically examine Ms. Dotres does
not, in itself, render his differential diagnostic unreliable, especially considering that he reached
his opinion by studying the records of other medical practitioners who examined Ms. Dotres.
(See Raybon Report [Docket 101-1], at ¶ 6 (listing the records Dr. Raybon reviewed in reaching
his opinion, including the medical findings of four doctors who examined Ms. Dotres)); see also
Kannankeril v. Terminix Int’l, Inc., 128 F.3d 802, 807 (3d Cir. 1997), as amended (Dec. 12,
1997), (“[A] physician may reach a reliable differential diagnosis without himself performing a
physical examination, particularly if there are other examination results available.”).
Having found that Dr. Raybon’s failure to physically examine Ms. Dotres does not per se
eliminate his specific causation testimony, I move to the “core” of differential diagnosis—“the
60
requirement that experts at least consider alternative causes” of the plaintiff’s medical condition
and rule out each alternative cause as the source of the claimed injury. In re Paoli R.R. Yard PCB
Litig., 35 F.3d 717, 759 (3d Cir. 1994). Dr. Raybon addresses two alternative causes to Ms.
Dotres’s current defecation and urination problems: (1) preexisting constipation; and (2)
preexisting back pain.
First, Dr. Raybon asserts that because Ms. Dotres had no defecatory problems prior to the
mesh implantation, the mesh must have caused her current difficulties. (Raybon Report [Docket
101-1], at ¶ 5). BSC argues that this statement contradicts Ms. Dotres’s deposition, in which she
acknowledged that she had “constipation” prior to her mesh implant surgery. (Dotres Dep.
[Docket 101-3], at 142:7–9). Additionally, BSC emphasizes Dr. Raybon’s concession that he
could not “rule out” the worsening of Ms. Dotres’s constipation as a progression of her presurgery defecatory problems as opposed to a consequence of the mesh. (See Raybon Dep.
[Docket 101-2], at 186:4–9).
Second, Dr. Raybon eliminated spinal stenosis, a condition in which the spinal cord puts
pressure on the nerves exiting the spine, as a cause of Ms. Dotres’s current problems with
urination and pelvic pain. (See id. at 166:30–167:2 (defining spinal stenosis)). He reached this
conclusion from reviewing Ms. Dotres’s medical records, which contained “no objective data to
support this diagnosis [or any] indications that Ms. Dotres has motor or sensory deficit in her
legs,” which is a symptom usually associated with a spinal injury. (Raybon Report [Docket 1011], at ¶ 5). BSC disputes this opinion because Dr. Raybon conceded at his deposition that he
could not “rule out her back pain as a cause of her complained nerve impingement and
incontinence issues.” (BSC’s Mem. re: Raybon [Docket 101], at 8).
61
These challenges to Dr. Raybon’s specific causation opinions go to credibility, not
admissibility. In reviewing a Daubert objection, the court’s role is to conduct “a preliminary
assessment of whether the reasoning or methodology underlying the testimony is scientifically
valid.” Daubert, 509 U.S. at 592. Here, Dr. Raybon thoroughly examined Ms. Dotres’s medical
records, considered possible causes for her current symptoms, and determined that her records
“do not indicate any cause other than the Pinnacle mesh.” (Raybon Report [Docket 101-1], at
¶ 5). I have previously accepted this methodology as reliable under Daubert. See Tyree et al. v.
BSC, No. 2:12-cv-08633, 2014 WL 5320566, at *52 (S.D. W. Va. Oct. 17, 2014) (concluding
that Dr. Rosenzweig’s specific causation testimony is not excluded under Daubert because he
“adequately considered and eliminated alternate causes” of the plaintiff’s symptoms after
reviewing her medical records).
Furthermore, an expert’s failure to completely “rule out” a possible alternative cause of a
plaintiff’s illness should not necessarily lead to exclusion under Daubert, “unless the expert can
offer no explanation for why [he] has concluded an alternative cause . . . was not the sole cause.”
Westberry, 178 F.3d at 265 (internal quotations omitted). Dr. Raybon, although admitting he
could not completely eliminate pre-surgery constipation or spinal stenosis as causes of Ms.
Dotres’s current problems, provided specific reasons for his opinion that the mesh is the most
probable source. Dr. Raybon explained that the mesh is most likely responsible for Ms. Dotres’s
defecatory problems because the increased constipation “happened after the surgery,” at the
same time her other symptoms appeared. (Raybon Dep. [Docket 101-2], at 185:21–23). “[A]
temporal relationship between exposure to a substance and the onset of a disease or worsening of
symptoms can provide compelling evidence of causation,” especially considering that Dr.
62
Raybon has reviewed all of the relevant medical records that might indicate otherwise.
Westberry, 178 F.3d at 265. In addition, Dr. Raybon eliminated spinal stenosis because “there
are no indications that Ms. Dotres has motor or sensory deficit in her legs,” which is a common
symptom of spinal stenosis. (Raybon Report [Docket 101-1], at ¶ 5). Dr. Raybon’s report and his
deposition testimony demonstrate that Dr. Raybon has considered alternative causes and
reasoned that while he cannot absolutely rule out these causes, he can exclude them as the “most
likely” cause. This methodology satisfies Daubert. See Westberry, 178 F.3d at 262 (concluding
that a differential diagnosis is accomplished by “determining which of those [alternative causes]
that cannot be excluded is the most likely”).
In sum, BSC’s arguments against Dr. Raybon’s specific causation testimony concern the
accuracy of his differential diagnosis. Such arguments go to “the weight that the jury should give
the expert’s testimony and not the admissibility of that testimony.” Id. at 265. At trial, BSC can
certainly expound on the accuracy of Dr. Raybon’s exclusion of progressed constipation and
back pain as a cause for Ms. Dotres’s current complaints, but for purposes of Daubert, I FIND
Dr. Raybon’s methodology to be reliable. Accordingly, BSC’s motion on specific causation
point is DENIED.
BSC’s Motion to Exclude the Opinions and Testimony of Dr. Raybon [Docket 100] is
therefore GRANTED IN PART (with respect to general causation opinion testimony) and
DENIED IN PART (with respect to specific causation opinion testimony).
I. Motion to Exclude the Testimony of Linda Kiley, M.D.
BSC moves to exclude the testimony of Linda Kiley, M.D. Dr. Kiley is board certified in
Obstetrics and Gynecology and in the subspecialty of Female Pelvic Medicine and
63
Reconstructive Surgery. (See Kiley Report [Docket 103-1], at 9). She is the treating physician
who performed Ms. Eghnayem’s Pinnacle removal surgery in 2012. (See id. at 6). Dr. Kiley
seeks to offer general causation opinions on the properties and complications of transvaginal
mesh and specific causation opinions regarding Ms. Eghnayem’s injuries. BSC argues that Dr.
Kiley’s general causation opinions should be excluded because she is unqualified to opine as to
the properties of transvaginal POP mesh and because her general causation opinions lack a
scientific basis. (See Def. BSC’s Mem. of Law in Supp. of Its Mot. to Exclude the Ops. & Test.
of Linda Kiley, M.D. (“BSC’s Mem. re: Kiley”) [Docket 103], at 2). BSC also alleges that Dr.
Kiley’s specific causation opinions should be excluded because she failed to perform a proper
differential diagnosis. (See id.).
1. General Causation Opinions
BSC argues that Dr. Kiley is unqualified to offer general causation opinions as to the
properties of transvaginal mesh and its complications and that her general causation opinions
lack a reliable scientific basis. In her expert report, Dr. Kiley states that:
The reasons I do not implant polypropylene transvaginal mesh for pelvic organ
prolapse are (1) transvaginal mesh does not provide an anatomical solution for
pelvic organ prolapse repair, (2) transvaginal placement permits the development
of biofilm 10 and inflammation due to the contamination of the polypropylene
mesh, and (3) I believe the resulting biofilm is the basis for the symptoms and
complications associated with the polypropylene synthetic mesh.
(Kiley Report [Docket 103-1], at 4). BSC states that Dr. Kiley “also offers opinions that Pinnacle
mesh can cause infection, nerve entrapment, shrinkage and scarring of mesh.” (BSC’s Mem. re:
Kiley [Docket 103], at 6 (citing page of Dr. Kiley’s expert report which states that Ms.
10
In its memorandum, BSC states that “[t]he parties have agreed that Dr. Kiley will not offer general or specific
causation opinions regarding biofilm.” (BSC’s Mem. re: Kiley [Docket 103], at 6, n.4). Therefore, I will not address
the reliability and relevancy of Dr. Kiley’s biofilm opinions.
64
Eghnayem’s “pelvic pain, dyspareunia, bleeding with intercourse, urinary incontinence, vaginal
tenderness and mesh erosion were caused by infection, inflammation, nerve entrapment,
shrinkage, and scarring of the mesh”)). 11 I will address the qualifications and reliability
arguments below.
a. Qualifications
Dr. Kiley is an accomplished OB/GYN doctor. (See Kiley Report [Docket 103-1], at 9–
12 (Dr. Kiley’s curriculum vitae)). She asserts that her “background, training and experience all
qualify [her] to review and comment on the area of surgical meshes and slings used in tissue
repair, including Boston Scientific pelvic floor reconstructive mesh and stress urinary
incontinence slings, and the complications associated with such products.” (Id. at 4). Dr. Kiley
has more than 20 years of experience. (See id. at 3). She has performed more than 10,000
surgeries, including an average of 2 major procedures and 5 minor procedures each week. (See
id.). Approximately half of her patients seek her care “due to complications associated with prior
gynecologic surgery, prolapse, incontinence, fistulas and mesh and sling related injuries[,]” and
she performs surgeries to treat POP, including procedures using BSC products. (Id. 3–4).
Although she has performed more than 500 vaginal prolapse repairs, she has “never used
polypropylene transvaginal mesh kits for the repair of [POP].” (Id. at 4). However, over the past
six years, Dr. Kiley has removed an average of one polypropylene mesh sling or POP device
11
BSC’s citation here to Dr. Kiley’s expert report seems to refer to her specific causation opinions about Ms.
Eghnayem. In fact, BSC cites to this same page when discussing Dr. Kiley’s specific causation opinions. (See BSC’s
Mem. re: Kiley [Docket 103], at 7). Even so, the plaintiff does not refute BSC’s assertion that Dr. Kiley seeks to
opine as to general causation. (See Pl.’s Resp. to Def. BSC’s Mot. to Exclude the Test. of Linda Kiley, M.D. (“Pl.’s
Resp. re: Kiley”) [Docket 133], at 8). Moreover, Dr. Kiley writes in her expert report that her “background, training
and experience all qualify [her] to review and comment on the area of surgical meshes and slings used in tissue
repair, including Boston Scientific pelvic floor reconstructive mesh and stress urinary incontinence slings, and the
complications associated with such products.” (Kiley Report [Docket 103-1], at 4). Therefore, I will proceed with
the assumption that Dr. Kiley seeks to offer general causation opinions.
65
each month from her patients. (Id.).
Dr. Kiley may be qualified to opine as to the properties of polypropylene transvaginal
mesh and its complications. However, I need not make this determination because I find her
general causation opinions to be unreliable. To the extent that BSC challenges Dr. Kiley’s
general causation opinions as to biomaterials topics, BSC’s motion is DENIED AS MOOT
because the plaintiff concedes that she “has not and does not intend to offer [Dr. Kiley] to opine
regarding such matters.” (Pl.’s Resp. re: Kiley [Docket 133], at 8).
b.
Reliability
BSC also challenges the reliability of Dr. Kiley’s general causation opinions. In
particular, BSC argues that her opinions lack a scientific basis.
Dr. Kiley states that, “[i]n order to more fully understand how to deal with the
complications of these systems and remove them, [she has] observed numerous sling and mesh
insertion procedures by [her] colleagues” and that she has “studied textbooks, publications,
DFU’s, surgical videos, cadaver dissections and countless operative reports as part of [her] study
of sling and mesh surgeries.” (Kiley Report [Docket 103-1], at 4). In forming all of her opinions,
Dr. Kiley states that she “considered the scientific literature, the deposition transcript of Amal
Eghnayem, [her] care and treatment of Amal Eghnayem, including Mrs. Eghnayem’s revision
surgery which [she] performed on August 29, 2012 and [her] overall experience.” (Id.).
Despite these assertions, I am unable to identify a single scientific study cited in Dr.
Kiley’s expert report. (See Kiley Report [Docket 103-1]). Even her relied upon list contains no
scientific studies. (See id. at Appendix B (naming only the following five materials: (1)
“Deposition and all exhibits – Amal Eghnayem, taken May 19, 2014”; (2) “Pinnacle DFU
66
2008[;]” (3) “Good Samaritan Medical Center, Medical Records”; (4) “Premier Family Health,
P.A., Medical Records”; (5) “OB GYN Specialists of the Palm Beaches, Medical Records”)).
In her deposition, Dr. Kiley notes some scientific sources that she has considered. (See,
e.g., Kiley Dep. [Docket 133-2], at 7:18–8:6, 8:19–9:16, 46:7–11, 49:13–16, 77:14–20 (noting a
dissertation on biofilms she found the night before her deposition, “some printouts of abstracts
and articles that [she] was aware of,” Dr. Gouda’s report and some of his references, the
Rosenblatt study, the Nygaard study and stating that she relies on “medical literature” and
textbooks in her clinical practice). Nevertheless, Rule 26 plainly states that, “[u]nless otherwise
stipulated or ordered by the court[,]” an expert’s written report “must contain . . . a complete
statement of all opinions the witness will express and the basis and reasons for them” and “the
facts or data considered by the witness in forming them . . . ” Fed. R. Civ. Proc. 26(a)(2)(B)(i)–
(ii) (emphasis added). Dr. Kiley’s report fails to meet these requirements, and the plaintiffs do
not provide any justification for her omissions. “Proposed testimony must be supported by
appropriate validation—i.e., ‘good grounds’ based on what is known.” Daubert, 509 U.S. at 590.
Without information about which studies Dr. Kiley relied upon in forming each of her opinions
in her report, I am unable to conclude whether her opinions are based on a reliable method.
Therefore, Dr. Kiley’s general causation opinions are EXCLUDED.
2. Specific Causation Opinions
Dr. Kiley also seeks to offer specific causation opinions as to Ms. Eghnayem. In
particular, Dr. Kiley opines that “to a reasonable degree of medical certainty, the injuries
sustained by Amal Eghnayem are caused by the Boston Scientific Pinnacle system. The pelvic
pain, dyspareunia, bleeding with intercourse, urinary incontinence, vaginal tenderness and mesh
67
erosion were caused by infection, inflammation, nerve entrapment, shrinkage, and scarring of the
mesh.” (Kiley Report [Docket 103-1], at 6). BSC argues that Dr. Kiley’s specific causation
opinions are unreliable because she failed to conduct a proper differential diagnosis.
“[A] reliable differential diagnosis provides a valid foundation for an expert opinion.”
Westberry v. Gislaved Gummi AB, 178 F.3d 257, 263 (4th Cir. 1999). It “typically, though not
invariably, is performed after ‘physical examinations, the taking of medical histories, and the
review of clinical tests, including laboratory tests,’ and generally is accomplished by determining
the possible causes for the patient’s symptoms and then eliminating each of these potential
causes until reaching one that cannot be ruled out or determining which of those that cannot be
excluded is the most likely.” Id. at 262 (citation omitted). BSC alleges that Dr. Kiley failed to
properly rule out Ms. Eghnayem’s pre-implantation pelvic pain, the care of treating physicians,
and “patient-specific factors” such as “genetics or co-morbidities.” (BSC’s Mem. re: Kiley
[Docket 103], at 8; see Kiley Dep. [Docket 103-2], at 112:1–9 (noting Ms. Eghnayem’s preimplantation “vaginal pressure and pain that radiated to her back”); see id. at 112:14–16 (noting
Ms. Eghnayem’s pre-implantation complaints of “painful intercourse”)).
Dr. Kiley’s expert report reveals that she reviewed Ms. Eghnayem’s medical history,
conducted an exam of Ms. Eghnayem, and treated her. (See Kiley Report [Docket 103-1], at 4–
6). Dr. Kiley testifies that she always performs a differential diagnosis on all of her patients:
A:
I always have a differential diagnosis for every patient I see who comes in
with a complaint . . .
Q:
Okay. So tell us how you went about that process.
A:
Well, when a patient presents as she – as she presents her history to me, I
start to think about what could be the cause of her problems. That’s the
differential diagnosis. It’s an automatic process that takes place as a
68
physician when I evaluate someone. So a history is what begins the
differential diagnosis. I have pain. I feel there’s something, my husband
has pain, I start to think about, well, what – what could be the cause of
that. Then I do the examination. I see what I see. That narrows my
differential diagnosis significantly. We start with a list of five or ten
things, we go down to one or two things, all right, and then eventually
treatment plan based on differential diagnosis, cancelling [sic] of the
patient is undertaken and then post-operatively we get what we get. We
get our confirmation or not.
(Kiley Dep. [Docket 133-2], at 167:22–168:17). Contrary to BSC’s assertions, Dr. Kiley did
consider Ms. Eghnayem’s pre-existing pain during the course of treatment:
Q:
Okay. You were in a unique position in this case in the sense that not only
have you rendered this opinion about the relation of her symptoms to the
product from having a chance to obviously look at her records but you
also cared for her obviously; correct?
A:
Yes.
Q:
You also had the benefit of being the physician who actually did the
revision surgery on her; correct?
A:
That’s correct.
Q:
How did that help you in terms of making or drawing these conclusions
about the relationship between her symptoms and the product?
A:
Well, simply because looking at her overall history and conducting her
exam, conducting her surgery and conducting her post-operative care
allowed me to see the continuum. And there was a period of time before
her surgery when she had distressful symptoms and they were fairly
specific and they mostly centered around more vaginal laxity. She wanted
to have a tighter vagina, some pressure, those kinds of things.
During the time that she had her implant, she had a different kind of pain
and her husband had pain. Once that was removed, her symptoms
improved.
My experience has shown that happens as a general rule when I see
patients with mesh-related pelvic organ prolapse problems . . .
(Id. at 167:18–169:20). Dr. Kiley observed mesh erosion and exposure intraoperatively in Ms.
69
Eghnayem and provides an explanation as to how this erosion could have caused the pain the
plaintiff and her husband experienced. (See id. at 170:16–171:15; Kiley Report [Docket 103-1],
at 5–6). Also, during the 2012 removal procedure, Dr. Kiley “found significant scarring and
vaginal varicosities in vessels in the area of the Boston Scientific Pinnacle mesh.” (Kiley Report
[Docket 103-1], at 6 (emphasis added)). Dr. Kiley has placed a biologic graft in Ms. Eghnayem
and states that she does not “believe that the biologic graft that was placed played any adverse
role in her recovery” because the plaintiff’s symptoms have improved after the removal of her
Pinnacle. (Kiley Dep. [Docket 133-2], at 170:3–15).
In sum, Dr. Kiley testifies:
Q:
Okay. What is the basis of that opinion that the Boston Scientific Pinnacle
system caused these symptoms and conditions in Ms. Eghnayem?
A:
It’s based on the fact that she presented post-operatively with symptoms
that were new and different from symptoms she had had previously and
my physical examination of her, my evaluation of her preoperatively,
intraoperatively, and post-operatively are – and observing how she has
done long-term since her surgery and that she was vastly improved after
the removal of the system is what my opinion is based on for her.
Q:
Okay. So would it be a fair statement to say that this opinion that you’ve
expressed that Ms. Eghnayem’s symptoms are related to the Boston
Scientific Pinnacle system is based upon your care and treatment of her?
A:
Yes.
Q:
Is it based upon your overall clinical experience having cared for patients
in the past with this condition?
A:
Yes.
(Id. at 166:19–167:16 (counsel names and objections omitted)). Dr. Kiley’s diagnosis of Ms.
Eghnayem is sufficiently reliable to survive Daubert scrutiny. I DENY BSC’s motion with
respect to Dr. Kiley’s specific causation opinions.
70
Therefore, I GRANT IN PART (with respect to general causation opinion testimony)
and DENY IN PART (with respect to specific causation opinion testimony) BSC’s motion on
Dr. Kiley [Docket 102].
J. Motion to Exclude the Testimony of Vladimir Iakovlev, M.D.
BSC seeks to exclude the opinions of Dr. Vladimir Iakovlev. Dr. Iakovlev is an
anatomical pathologist and director of Cytopathology at the Department of Laboratory Medicine
at St. Michael’s Hospital in Toronto, Canada. (Iakovlev Report [Docket 105-1], at 2). In his
expert report, Dr. Iakovlev describes a study he participated in with Dr. Robert Bendavid
beginning in 2012 to “analyze explanted mesh and . . . provide a correlation between
pathological findings and clinical symptoms.” (Id.). Based on this study, as well as his
background in pathology, Dr. Iakovlev concludes “that women implanted with pelvic mesh
devices are at an increased risk of suffering chronic and debilitating pelvic pain and dyspareunia
as a result of the higher innervation of that anatomical region of the body compared to the
anterior abdominal wall.” (Id. at 3). BSC makes the following arguments against the
admissibility of Dr. Iakovlev’s opinions under Daubert: (1) his general causation opinions are
unreliable; (2) his deformation opinions based on the “stretch test” are unreliable; (3) he is
unqualified to opine on mesh design and deformation and his opinions are unreliable; (4) he is
unqualified to opine on polypropylene degradation and his opinions are unreliable; and (5) he is
unqualified to offer specific causation opinions and his opinions regarding Ms. Eghnayem are
unreliable. (See generally BSC’s Mem. of Law in Supp. of Its Mot. to Exclude the Ops. & Test.
of Vladimir Iakovlev, M.D. (“BSC’s Mem. re: Iakovlev”) [Docket 105]). For the reasons
71
discussed below, BSC’s motion [Docket 104] is GRANTED IN PART and DENIED IN
PART.
1. Opinions Based on the Stretch Test
BSC challenges the reliability of Dr. Iakovlev’s opinions drawn from his mechanical
testing of BSC devices. Dr. Iakovlev performed a “stretch test” on BSC mesh to simulate forces
acting on the device in the body and confirm his hypothesis that mesh deforms after stretching
forces are applied to it. (See Iakovlev Report [Docket 105-1], at 12; see also Iakovlev Dep.
[Docket 105-4], at 350). Dr. Iakovlev placed the mesh on a flat surface against a scale and
secured the ends with clamps. (Iakovlev Dep. [Docket 105-4], at 345). Then, by pulling the
clamps apart, he stretched the mesh to 120% of its original length. (Id.). Dr. Iakovlev observed
permanent bowing, lengthening, and raised edges, which he opines is similar to the natural
deformation that takes place inside the human body. (See Iakovlev Report [Docket 105-1], at
12).
In particular, BSC makes the following arguments as to why Dr. Iakovlev’s testing was
methodologically flawed: (1) his testing method was not based on any testing standards and did
not have a written protocol; (2) he did not regulate or measure how much force he applied to the
mesh samples; (3) he set clamps on the mesh, but cannot provide measurements; (4) he intended
to stretch the mesh to reach 120% of the original length, but does not know how he arrived at
that result or how to repeat the test; (5) he could not describe or comprehend how he controlled
his test for confirmation bias; (6) he does not know whether mesh responds to stretching with
clamps the same way it does when implanted in the human body, nor has he done mechanical
testing on mesh in the body; (7) he cannot validate that stretching mesh on a machine replicates
72
the behavior of mesh in the body because he only measured unilateral forces, and not forces from
multiple directions or the amount of force used; and (8) he has no knowledge of any general
acceptance of his methodology in the scientific community. (BSC’s Mem. re: Iakovlev [Docket
105], at 7). BSC’s objections can be divided into two categories: (1) testing standards and (2) in
vivo environment.
I have previously reviewed the opinion testimony of Dr. Iakovlev under Daubert. See
Tyree, et al. v. Boston Scientific, Corp., No. 2:12-cv-08633, 2014 WL 5320566, at *39–43 (S.D.
W. Va. Oct. 17, 2014). The parties in this case assert the same arguments regarding the reliability
of Dr. Iakovlev’s stretch test that I addressed in Tyree. To the extent that there are differences in
fact and exhibits, the court does not find them sufficiently material. The Tyree excerpts quoted
below are to explicate the conclusions the court reaches on the reliability of Dr. Iakovlev’s
stretch test:
a. Testing Standards
Many of BSC’s arguments incorporate Dr. Iakovlev’s failure to adhere to testing
standards or a written protocol. In his deposition, Dr. Iakovlev states that he
developed the stretch test method; however, he failed to follow a written protocol
other than the brief description included in his expert report. (Iakovlev Dep.
[Docket 225-3], at 345). When describing the methodology he employed, Dr.
Iakovlev admits that he did not wear gloves, clean or sterilize the mesh, or use
machinery to regulate the amount of force exerted. (Id. at 347–48). Dr. Iakovlev
insists that because the criterion for the test was length rather than force, the
regulation of force was irrelevant. (Id. at 348). Nevertheless, Dr. Iakovlev readily
admits that he developed and performed the stretch test himself, without taking
care to standardize his method or the results. (Id. at 345, 350). Additionally, Dr.
Iakovlev has no knowledge of whether his methodology is generally accepted in
the medical community. (Id. at 350). Finally, when asked how he can be sure his
results were not caused by the way he pulled the mesh, Dr. Iakovlev’s only
response is that the stretch test was a simulation, which I FIND insufficient to
establish reliability. (Id. at 351–52).
b. In Vivo Environment
73
BSC’s remaining two arguments are in regard to Dr. Iakovlev’s failure to
replicate an in vivo environment. Although Dr. Iakovlev states that he performed
the stretch test to simulate forces acting on the device in the body, BSC contends
that Dr. Iakovlev has no way of knowing whether mesh responds to stretching
with clamps the same way it does when implanted inside of a woman. (Def.’s
Mem. re: Iakovlev [Docket 226], at 7). BSC further argues that Dr. Iakovlev’s
tests failed to replicate the forces in the female pelvic floor because he measured
uniaxial forces, while the forces in the female pelvic floor are generally multidirectional. (See id.).
The mere fact that Dr. Iakovlev’s study was uniaxial does not alone render his
methodology unreliable; however, the fact that he did not account for multidirectional forces inside of the female pelvis weighs heavily against admissibility.
Much like his response to BSC’s question regarding confirmation bias, when
asked about the way mesh responds inside and outside of the body, Dr. Iakovlev
states that “the assumption is that if the forces are similar, the behavior will be
similar. That’s a limitation of all experimental studies.” (Iakovlev Dep. [Docket
225-3], at 352). Dr. Iakovlev’s “assumption” that the force he applied by pulling
on the clamps accurately represents the forces inside the human body is hardly
sufficient to survive Daubert scrutiny. Accordingly, I FIND that Dr. Iakovlev’s
opinions based on his “stretch test” are unreliable and thus, EXCLUDED.
Tyree, 2014 WL 5320566, at *42–43. Therefore, I ADOPT my prior ruling on Dr. Iakovlev, as
stated in Tyree, and FIND that his opinions related to the “stretch test” are unreliable, and thus,
EXCLUDED. 12
2. General Causation Opinions
BSC argues that Dr. Iakovlev lacks reliable methodology for his general causation
opinions related to his review of explanted mesh as part of the Bendavid study. In preparing his
expert report, Dr. Iakovlev examined over 130 mesh explants, approximately sixty percent of
which were transvaginal mesh devices. (Iakovlev Report [Docket 105-1], at 3). The explanted
mesh types included heavy and lightweight knitted polypropylene, GoreTex, combined designs,
12
Although BSC does not raise this objection, I question the relevance of Dr. Iakovlev’s testing because it appears
he only tested BSC slings, which are not at issue in the present case.
74
and twenty-three 13 samples from BSC. (Id. at 3–4). BSC argues that because this study was not
confined to polypropylene mesh and Dr. Iakovlev provides no information on how the mesh
explants were chosen, the results are irrelevant and unreliable. (BSC’s Mem. re: Iakovlev
[Docket 105], at 5–6). The plaintiff contends that Dr. Iakovlev’s study is grounded in reliable
methodology because he followed “standard operating procedures of St. Michael’s Hospital” and
saw nerve entrapment, nerve ingrowth and degradation in 100% of the BSC explants.” (Pl.’s
Resp. in Opp’n to BSC’s Mot. & Mem. of Law to Exclude the Test. of Vladimir Iakovlev, M.D.
(“Pl.’s Resp. re: Iakovlev”) [Docket 129], at 12–13). In Tyree, I found as follows:
Dr. Iakovlev provides no information on how the mesh explants were chosen or
prepared for examination. (Def.’s Mem. re: Iakovlev [Docket 226], at 5–6). Dr.
Iakovlev testified that the 21 BSC samples he examined were provided by
plaintiffs’ counsel. (Iakovlev Dep. [Docket 268-2], at 42). I also note, in his
deposition for Edwards, Dr. Iakovlev further testified that he requested all
available meshes for examination, but had no way of knowing what methodology
the plaintiffs’ lawyers employed in providing him with the number of meshes they
did. (Id. at 157–61). Dr. Iakovlev “has given no explanation as to whether [his] is
a representative sample size or how he chose the particular explants analyzed.”
Lewis, 2014 WL 186872, at *8. “Therefore, I have no information as to the
‘potential rate of error’ inherent in [his] observations.” Id. (citing Daubert, 509
U.S. at 594). By simply highlighting the fact that Dr. Iakovlev performed an
independent analysis, the plaintiffs have not demonstrated that Dr. Iakovlev’s
opinions regarding pelvic mesh explants were derived using scientific methods.
Therefore, Dr. Iakovlev’s general causation opinions related to the Bendavid
study are EXCLUDED.
Tyree, 2014 WL 5320566, at *41.
In Edwards, I allowed Dr. Iakovlev to testify regarding Ms. Edward’s mesh because his
specific causation opinions did not present the same reliability concerns as his general causation
opinions. See No. 2:12-cv-09972, 2014 WL 3361923, at *23 (S.D. W. Va. July 8, 2014) (“Dr.
13
In his expert report, Dr. Iakovlev writes that he examined twenty-three BSC samples, but in his deposition, he
states he examined only twenty-one. (See id. at 4. But see Iakovlev Dep. [Docket 105-1], at 42).
75
Iakovlev may not testify regarding his general conclusions about mesh because his choice of
samples lacks scientific methodology. However, this is not a reason to exclude his testimony
about Ms. Edward’s mesh, which was made after a review of her explant.”). Here, BSC seeks to
exclude Dr. Iakovlev’s expert opinions on mesh design, mesh deformation, and polypropylene
degradation in the context of his general causation analysis based on the Bendavid study, which I
have determined to be unreliable. Therefore, I FIND that Dr. Iakovlev’s opinions on mesh
design, mesh deformation, and polypropylene degradation based on the Bendavid study should
be EXCLUDED.
3. Specific Causation Opinions 14
Based on the receipt and review of Ms. Eghnayem’s explanted mesh, Dr. Iakovlev also offers
specific causation opinions. Dr. Iakovlev opines that
Ms. Eghnayem’s mesh devices caused foreign body type reaction, chronic
inflammation, degradation of the mesh, bridging fibrosis, scarring with scar plate
formation, nerve entrapment, smooth muscle damage and vascular abnormalities,
all of which were significant contributing factors to Ms. Eghnayem’s symptoms
and subsequent treatment interventions.
(Iakovlev Report [Docket 105-1] at 71). BSC argues that Dr. Iakovlev’s specific causation
opinions should be excluded because (1) as a pathologist, Dr. Iakovlev is not qualified to render
a clinical opinion and (2) the bases for these opinions are unreliable because Dr. Iakovlev cannot
make a clinical differential diagnosis. (BSC’s Mem. re: Iakovlev [Docket 105], at 11–12). I
address each objection in turn.
14
To the extent that BSC seeks to exclude all of Dr. Iakovlev’s testimony because of the unreliability of his samples,
this argument is without merit. Dr. Iakovlev may not testify regarding his general conclusions about mesh because
his choice of samples lacks scientific methodology. However, that is not a reason to exclude his testimony specific
to Ms. Eghnayem’s mesh, which was made after a review of her explant. Therefore, BSC’s motion is DENIED to
the extent that it seeks to exclude Dr. Iakovlev’s mesh design, mesh deformation, and polypropylene degradation
opinions specific to Ms. Eghnayem.
76
a. Qualifications as a Pathologist
BSC argues that Dr. Iakovlev is unqualified to offer clinical opinions because he is a
pathologist, not a urogynecologist. (Id. at 11). A pathologist is a clinician who provides
diagnoses for patient care based on the examination of specimens they receive and relevant
clinical information. Edwards, 2014 WL 3361923, at *24 (citation omitted). In his expert report,
Dr. Iakovlev states that his “professional activities include diagnostic examination of specimens
surgically removed from human patients” where his “annual practice volume amounts to 5000
cases.” (Iakovlev Report [Docket 105-1], at 2). Dr. Iakovlev describes himself as an “academic
physician” who “pursue[s] research endeavors and teach[es] medical students and residents.”
(Id.). BSC does not question Dr. Iakovlev’s pathology credentials; rather, it only argues that as a
pathologist, he is unqualified to render these opinions. However, throughout these MDLs, I have
allowed numerous pathologists to testify regarding the properties of polypropylene mesh. See,
e.g., Sanchez, et al. v. Boston Scientific Corp., No. 2:12-cv-05762, 2014 WL 4851989, at *19–20
(S.D. W. Va. Sept. 29, 2014) (discussing Dr. Richard W. Trepeta); In re C. R. Bard, Inc., 948 F.
Supp. 2d 589, 621 (S.D. W. Va. 2013) (discussing Dr. Bernd Klosterhalfen). In fact, in Edwards,
I determined that Dr. Iakovlev was qualified to render opinions specific to that plaintiff’s mesh
based on his experience as a pathologist. See Edwards, 2014 WL 3361923, at *24–25. Therefore,
I FIND that Dr. Iakovlev is qualified to offer specific causation opinions regarding Ms.
Eghnayem based on his pathological examination of her mesh explants.
b. Reliability
Finally, BSC contends that Dr. Iakovlev’s specific causation opinions are unreliable
because he “admits” that he is unable to make a clinical differential diagnosis. (BSC’s Mem. re:
77
Iakovlev [Docket 105], at 12). BSC mistakenly objects to Dr. Iakovlev’s failure to act as a
clinician, when a clinician is not what Dr. Iakovlev purports to be. A reliable differential
diagnosis is typically performed after a physical examination of the patient. See Westberry v.
Gislaved Gummi AB, 178 F.3d 257, 262 (4th Cir. 1999). Pathologists do not perform physical
examinations or base their conclusions on them. Instead, Dr. Iakovlev explains that he performed
a “morphological differential diagnosis.” (Iakovlev Dep. II [Docket 105-3], at 153). Morphology
is the study of human tissue and morphological findings provide basis for clinical symptoms.
(Iakovlev Dep. [Docket 128-1], at 633). In preparing his expert report specific to Ms. Eghnayem,
Dr. Iakovlev reviewed Ms. Eghnayem’s clinical records and examined two specimens of her
explanted mesh to make morphological findings that explain her symptoms. (See Iakovlev
Report [Docket 105-1], at 69; see also Iakovlev Dep. II [Docket 105-3], at 152). Additionally,
Dr. Iakovlev relied on clinical colleagues to provide clinicopathological correlation and rule out
alternative causes. (See Iakovlev Dep. II [Docket 105-3], at 164, 643). Reviewing Dr. Iakovlev’s
report and deposition testimony as a whole, I find that Dr. Iakovlev based his opinions in large
part on reliable pathology methods. He reviewed clinical records, examined explanted
specimens, considered possible causes of pain, and came to a diagnostic conclusion. Challenges
as to the accuracy of Dr. Iakovlev’s diagnostic conclusion are better suited for crossexamination. Thus, I DENY BSC’s motion to exclude Dr. Iakovlev’s specific causation
opinions.
In conclusion, BSC’s Motion to Exclude the Testimony of Dr. Iakovlev [Docket 104] is
GRANTED IN PART and DENIED IN PART.
K. Motion to Exclude the Testimony of Konstantin Walmsley, M.D.
78
BSC seeks to exclude the opinions of Dr. Konstantin Walmsley. Dr. Walmsley is a
urologist who “specializes in the evaluation and management of pelvic organ prolapse, urinary
incontinence, and voiding dysfunction in women.” (Walmsley Report re: Betancourt [Docket
110-1], at 1). 15 Dr. Walmsley offers general opinions on the suitability of BSC’s Pinnacle device
for treatment of POP. Additionally, Dr. Walmsley provides case reports specific to Plaintiff
Juana Betancourt and Plaintiff Mania Nunez. First, BSC argues that the court should exclude Dr.
Walmsley’s general opinions because he is unqualified to make them, particularly Dr.
Walmsley’s opinions on (1) polypropylene design, testing, and warnings; and (2) the properties
of polypropylene mesh. (BSC’s Mem. of Law in Supp. of Its Mot. to Exclude the Ops. & Test. of
Konstantin Walmsley, M.D. (“BSC’s Mem. re: Walmsley”) [Docket 110], at 6–8). BSC also
asserts that Dr. Walmsley’s general opinions on “persistent life-altering complications” and safer
alternatives to mesh are unreliable. (Id. at 8–11). Next, BSC seeks to exclude Dr. Walmsley’s
opinions that constitute legal conclusions or speculate on BSC’s state of mind. (Id. at 11–13).
Finally, BSC contends that the court should exclude Dr. Walmsley’s specific causation opinions
because they are unreliable. (Id. at 13–17). The plaintiffs state that Dr. Walmsley will not offer
opinions regarding (1) polypropylene design, testing, and warnings; (2) the properties of
polypropylene; (3) legal conclusions; and (4) state of mind. Therefore, BSC’s motion with regard
to those opinions is DENIED as moot. For the reasons discussed below, BSC’s motion with
regard to Dr. Walmsley’s remaining opinions is also DENIED.
1. Mesh Complications
15
The plaintiffs provided one expert report by Dr. Walmsley specific to Ms. Betancourt and one expert report
specific to Ms. Nunez. (See Walmsley Report re: Betancourt [Docket 110-1]; see also Walmsley Report re: Nunez
[Docket 110-2]). However, the reports are identical, except as to the medical history of each plaintiff. Therefore, I
will refer mostly to Ms. Betancourt’s report, unless I am specifically discussing Ms. Nunez’s medical history.
79
First, BSC argues that Dr. Walmsley’s opinions on mesh complications are unreliable
because they are based solely on his personal experience rather than facts or data. (Id. at 8). BSC
takes particular issue with Dr. Walmsley’s statements regarding “life-threatening outcomes” and
“life-altering complications.” (Id. at 9 (quoting Walmsley Report re: Betancourt [Docket 110-1],
at 3)). BSC contends that Dr. Walmsley has only treated five patients who suffered from the
serious complications he describes and that his only other basis is the experience of colleagues.
(Id.) While I agree that Dr. Walmsley has limited clinical experience with patients who have
suffered serious and significant mesh complications, he has extensive experience with
polypropylene POP repair kits generally and makes an attempt to explain the low number of
patients in his deposition: “But you also have to understand that, first off, I – a lot of these
patients I feel much more comfortable sending to an academic center because you want to have
their problems fixed as quickly and safely as possible as opposed to having multiple surgeries.”
(Walmsley Dep. [Docket 141-2], at 262).
Additionally, although Dr. Walmsley’s statement in his report regarding speaking with
peers is vague, he also supports his opinions with citations to scientific literature. (Walmsley
Report re: Betancourt [Docket 110-1], at 7–9; see also Walmsley Dep. [Docket 141-2], at 280–
81 (noting that Dr. Walmsley cited reported literature on complication and exposure rates
generally and specifically related to the Pinnacle)). Both the Abed article and Blandon article
cited in Dr. Walmsley’s report speak to his premise that vaginal mesh and graft materials cause
persistent complications. See Abed, et al., Incidence & Management of Graft Erosion, Wound
Granulation, & Dyspareunia Following Vaginal Prolapse Repair with Graft Materials: A
Systematic Review, Int’l Urogynecol. J. (2011); see also Blandon, et al., Complications from
80
Vaginally Placed Mesh in Pelvic Reconstructive Surgery, Int’l Urogynecol. J. Pelvic Floor
Dysfunct. (2009). Accordingly, I FIND that Dr. Walmsley’s knowledge, experience, and review
of scientific literature provide sufficiently reliable bases for his opinions under Daubert.
2. Safer Alternatives
Next, BSC contends that Dr. Walmsley’s opinions on safer alternatives are unreliable
because he fails to cite any peer reviewed studies and “disavows” his opinions throughout his
deposition. Both of BSC’s contentions on this issue are misplaced. In his expert report, Dr.
Walmsley cites the Nygaard article in support of his proposition that safe and effective
alternatives to mesh surgery exist. (Walmsley Report re: Betancourt [Docket 110-1], at 7 (citing
Nygaard, et al., Abdominal Sacrocolpopexy: A Comprehensive Review, AOG Vol. 104, No. 4,
(2004) Additionally, in his deposition, Dr. Walmsley responds to a question about the
comparable complication rates in mesh and non-mesh based repairs as follows: “I haven’t seen
numbers much higher than 3, 5 percent at highest for, let’s say, native tissue repairs; whereas,
I’ve seen two to three times those numbers in the mesh literature.” (Walmsley Dep. [Docket
141-2], at 371–72 (emphasis added)); see also Tyree, et al. v. Boston Scientific Corp., No. 2:12cv-08633, 2014 WL 5320566, at *55 (S.D. W. Va. Oct. 17, 2014) (“Dr. Walker stated that
although he did not rely on particular studies in preparing his report for this case, he read peerreviewed literature and scientific studies on midurethral slings ‘very, very frequently’ in his
clinical practice, which involves treating women with urologic dysfunction.”).
Furthermore, peer-reviewed literature is merely one tool an expert witness can use to
support his opinion. Dr. Walmsley has extensive experience performing POP procedures and has
witnessed first-hand the difference in complications between polypropylene and non81
polypropylene treatments. In fact, his past experience with synthetic mesh has led him to rarely
use it in his current practice. (See Walmsley Dep. [Docket 141-2], at 49–50 (“Q: When you say
you do very little synthetic mesh, do – do you continue to use synthetic mesh as an option? A:
Less and less so. I mean, I have done, for example, one case this year and last year I did between
three and four.”)).
BSC’s contention that Dr. Walmsley “disavows” his opinions is a misinterpretation of his
deposition testimony regarding his use of synthetic mesh products. Dr. Walmsley states that
synthetic mesh can be a viable option in a very narrow and specific set of cases. (See id. at 51).
For example, the benefit might outweigh the risks for an elderly patient who does not want to
undergo invasive surgery and is not sexually active. (Id.) However, Dr. Walmsley specifically
states that even in those situations, synthetic mesh is “a heroic kind of last-ditch option.” (Id.).
Additionally, Dr. Walmsley’s discussion of the standard of care in 2008 and 2010 is based on his
opinion that doctors did not have enough information about mesh products at those times to
adequately warn their patients and obtain informed consent. (Id. at 410). Simply because Dr.
Walmsley believes that polypropylene mesh devices are functional products does not mean he
cannot opine that there are safer available alternatives. More importantly, because Ms.
Betancourt and Ms. Nunez do not meet the narrow criteria Dr. Walmsley describes, as mentioned
above, his opinions on safer alternatives are particularly pertinent to their cases. Accordingly, I
FIND that Dr. Walmsley’s opinions on safer alternatives are sufficiently reliable under Daubert.
3. Specific Causation
82
Finally, BSC asserts that Dr. Walmsley’s specific causation opinions regarding Ms.
Nunez and Ms. Betancourt are unreliable because they are based solely on his “personal
unscientific observations.” (BSC’s Mem. re: Walmsley [Docket 110], at 13).
a. Mania Nunez
The crux of BSC’s argument regarding Ms. Nunez is that Dr. Walmsley opines that she
will “continue[ ] to be plagued with complications,” when her medical records do not indicate
any current symptoms. (Walmsley Report re: Nunez [Docket 110-2], at 11). In opposition, the
plaintiff contends that Dr. Walmsley performed a reliable differential diagnosis to come to the
conclusion that mesh erosion is the cause of her pain and will continue to be in the future.
Whether BSC disagrees with Dr. Walmsley’s ultimate conclusion is not a sufficient basis to
object under Daubert, given that he performed a reliable differential diagnosis. I note that, “a
physician may reach a reliable differential diagnosis without personally performing a physical
examination.” Cooper v. Smith & Nephew, Inc., 259 F.3d 194, 203 (4th Cir. 2001). Here, Dr.
Walmsley reviewed Ms. Nunez’s medical records, her pathology report, and her deposition.
Additionally, throughout his deposition testimony, Dr. Walmsley considers possible alternative
causes of pain and subsequently dismisses them. (See, e.g., Walmsley Dep. [Docket 141-2], at
437 (discussing Ms. Nunez’s HPV: “In my research of the medical literature, I’ve not come
across instances where that specific finding has been attributed to increased risk of erosion.”);
see also id. at 441 (discussing Ms. Nunez’s vaginal cuff cellulitis: “Well, I understand your
question and I would say yes if, in fact, the infected tissue were still present. The issue I have
here is that the tissue’s gone.”)). Any potential errors in Dr. Walmsley’s differential diagnosis
“affect the weight that the jury should give the expert’s testimony and not the admissibility of the
83
testimony.” Westberry, 178 F.3d at 265 (internal quotations omitted). Therefore, I FIND that Dr.
Walmsley adequately considered and eliminated alternate causes of Ms. Nunez’s symptoms such
that his differential diagnosis is reliable.
b. Juana Betancourt
BSC makes similar objections in regard to Dr. Walmsley’s opinions on Ms. Betancourt,
in addition to emphasizing the fact that Dr. Walmsley’s case specific reports are mostly identical,
except for the names of the patients. BSC points out that in Ms. Betancourt’s report, Dr.
Walmsley failed to change the name in several places from “Martinez” to “Betancourt.” BSC
argues that this typographical error is evidence that Dr. Walmsley always takes the same position
“without any independent analysis.” (BSC’s Mem. re: Walmsley [Docket 110], at 14). I disagree.
In his deposition, Dr. Walmsley explains his mistake:
Q:
And when you saw the concerns you voiced in relation to Ms. Martinez, it
looks to me like the factual statements about the injuries you have made in
this – in Ms. Betancourt’s report are identical to the injuries you’ve set
forth in Ms. Nunez’ report; is that correct?
A:
Well, I – I don’t believe that’s fair to say, because keep in mind that the
first part of my report gives a timeline that describes the injuries. And then
what I start to summarize and describe my opinions, what you have to
understand is a lot of these mesh-related complications do have overlap:
Pelvic pain, dyspareunia, mesh erosion, mesh extrusion. Unfortunately in
the case of both Ms. Martinez and Ms. Betancourt, they had a very similar
spectrum of complications.
...
A:
But for the purposes of this report, understand the medical records were
very closely vetted by myself. I considered if there was any sort of
deviations in the standard of care on the part of the doctors in terms of
assessing or formulating my opinion for better, for worse, because a lot of
the similar complications that I saw with Ms. Martinez, which were meshspecific complications, that tended to be fairly redundant and reproducible
element to my report.
84
(Walmsley Dep. [Docket 141-2], at 98–100).
Furthermore, as discussed above, it is clear that Dr. Walmsley did in fact perform an
independent analysis by reviewing Ms. Betancourt’s medical records, pathology report, and
deposition. Additionally, throughout his deposition testimony, Dr. Walmsley considers possible
alternative causes of pain and subsequently dismisses them. (See, e.g., Walmsley Dep. [Docket
141-2], at 178 (“[B]ased on my review of the medical records, I don’t see anything within the
medical records that says dyspareunia pain at vaginal cuff, you know, likely hysterectomy
related. This – this – these setbacks occurred over two years after the hysterectomy had been
finished. So I am not of the opinion that her dyspareunia that she describes in 2012 is related to
her hysterectomy.”); see also id. at 337 (“I don’t necessarily think that estrogen deficiency as a
result of now having her body making estrogen is as relevant of an issue in the first year or two
of this whole thing, if that makes sense to you.”)). Any potential errors in Dr. Walmsley’s
differential diagnosis “affect the weight that the jury should give the expert’s testimony and not
the admissibility of the testimony.” Westberry, 178 F.3d at 265 (internal quotations omitted).
Therefore, I FIND that Dr. Walmsley adequately considered and eliminated alternate causes of
Ms. Betancourt’s symptoms such that his differential diagnosis is reliable.
In conclusion, I DENY BSC’s Motion to Exclude the Testimony of Dr. Walmsley
[Docket 109].
L. Motion to Exclude the Opinions & Testimony of Jorge Pando, M.D.
Dr. Pando, a licensed obstetrician and gynecologist, treated Ms. Betancourt after she had
undergone mesh implant surgery. Dr. Pando diagnosed Ms. Betancourt “with anterior and
posterior exposure of vaginal mesh and erosion,” and he performed surgery to partially remove
85
the mesh. (Pando Report [Docket 155-1], at ¶ 2). The plaintiffs seek to offer Dr. Pando as a
“non-retained expert” to testify about his treatment of Ms. Betancourt and his opinion that “the
cause of Ms. Betancourt’s pelvic pain and dyspareunia is the Pinnacle mesh and the procedure by
which it is implanted as directed by Boston Scientific Corporation.” (Id. at ¶ 6). BSC moves to
exclude the opinions and testimony of Dr. Pando on the basis that the plaintiffs did not timely
designate Dr. Pando as an expert. (See Def.’s Mem. of Law in Supp. of its Mot. to Exclude the
Ops. & Test. of Dr. Pando (“Def.’s Mem. re: Pando”) [Docket 156], at 6–7). BSC also argues
that this court should limit Dr. Pando’s testimony to his care and treatment of Ms. Betancourt.
(Id. at 7–12). Because I find that the plaintiffs did not timely disclose Dr. Pando as an expert in
accordance with this court’s pretrial orders, I need not address the scope of his testimony.
Federal Rule of Civil Procedure 26 requires a party to disclose to other parties “the
identity of any witnesses it may use at trial to present [expert] evidence.” Fed. R. Civ. P.
26(a)(2)(A). Furthermore, “if the witness is one retained or specially employed to provide expert
testimony,” a party must accompany this disclosure with a written report detailing “a complete
statement of all opinions the witness will express and the basis and reasons for them.” Fed. R.
Civ. P. 26(a)(2)(B). Expert reports under Rule 26(a)(2)(B) are not required for treating
physicians, see L.R. Civ. P. 26.1, but parties must still supply an expert report under Rule
26(a)(2)(C), stating the subject matter of the testimony and providing a summary of the witness’s
opinion testimony. Fed. R. Civ. P. 26(a)(2)(C). The plaintiffs’ report for Dr. Pando satisfies the
requirements of Rule 26(a)(2)(C). (See Pando Report [Docket 155-1], at ¶¶ 1–10 (outlining the
opinions Dr. Pando is expected to offer at trial)).
Rule 26, however, also requires “a party [to] make these disclosures at the times and in
86
the sequence that the court orders.” Fed. R. Civ. P. 26(2)(D). This court set forth a timeline for
expert discovery in Pretrial Orders # 95 and # 104. As demonstrated in the following table, the
plaintiffs did not timely disclose Dr. Pando as an expert in accordance with the court’s directive.
June 9, 2014
June 20, 2014
(approximately)
July 18, 2014
July 18, 2014
July 22, 2014
July 25, 2014
July 30, 2014
August 1, 2014
Deadline for plaintiffs’ expert reports (Pretrial Order # 95).
The plaintiffs met with Dr. Pando for the first time to discuss Ms.
Betancourt’s medical record. (Pando Dep. [Docket 155-2], at 56:3–23).
Deadline for the completion of expert discovery (Pretrial Order # 104).
Deadline for the filing of Daubert motions (Pretrial Order # 95).
Deposition of Dr. Pando (Pando Dep. [Docket 155-2], at 1).
Deadline for filing Daubert briefings (Pretrial Order # 95).
Plaintiffs disclosed their Rule 26 designation of Dr. Jorge Pando as a nonretained expert. (Def.’s Mem. re: Pando [Docket 156], at 6).
Deadline for case-specific discovery (Pretrial Order # 95).
The plaintiffs provided BSC with an expert report for Dr. Pando fifty-one days after the June 9
deadline. The disclosure for Dr. Pando was therefore untimely under Pretrial Order # 95.
Consequently, the plaintiffs may not use Dr. Pando as a witness at trial unless their failure to file
a timely disclosure “was substantially justified or is harmless.” Fed. R. Civ. P. 37(c)(1). The
Fourth Circuit has offered guidance in applying this rule:
In determining whether nondisclosure of evidence is substantially justified or
harmless, we consider: (1) the surprise to the party against whom the witness was
to have testified; (2) the ability of the party to cure that surprise; (3) the extent to
which allowing the testimony would disrupt the trial; (4) the explanation for the
party’s failure to name the witness before trial; and (5) the importance of the
testimony.
Hoyle v. Frightliner, LLC, 650 F.3d 321, 329–30 (4th Cir. 2011) (internal citation omitted).
Here, weighing these considerations demonstrates that the plaintiffs’ failure to file a timely
disclosure for Dr. Pando was not substantially justified and is not harmless.
First, the plaintiffs’ untimely disclosure of Dr. Pando unfairly surprised BSC. Having not
received a Rule 26 disclosure for Dr. Pando, BSC prepared to depose Dr. Pando as a fact
87
witness, rather than an expert witness, in accordance with the parties’ agreed upon schedule. (See
Def.’s Mem. re: Pando [Docket 156], at 6 n.4). Then, at deposition, BSC questioned Dr. Pando
as a fact witness, allowing the plaintiffs to “[take] the lead” and to “question[] Dr. Pando first
pursuant to the parties’ agreement on deposition priority for treating physicians.” (Id.). If the
plaintiffs had timely served their expert disclosure, BSC would not have approached the
deposition in this manner and would have instead treated Dr. Pando as an expert witness. (See id.
at 7 (“Had Plaintiff served her disclosure prior to the deposition, Boston Scientific would not
have allowed plaintiff to take the lead . . . and do the initial examination of Dr. Pando.”)).
Moreover, with timely disclosure, BSC would have had “full notice of Dr. Pando’s
opinions prior to deposition” and could have questioned Dr. Pando about his “inconsistent”
opinions. (Id.). In response, the plaintiffs analogize this case to Goldman v. Phillips & Son
Drilling, Inc., in which the court allowed the expert to testify even though the expert report was
nine days late. No. 3:13-cv-152, 2014 WL 3407066, at *3 (N.D. W. Va. July 10, 2014). Goldman
does not assist the plaintiffs in this case, when they submitted their expert report for Dr. Pando
fifty-one days after the deadline set forth in Pretrial Order # 95.
The next factor, the ability to cure the surprise, also weighs against the plaintiffs. The
plaintiffs argue that they “cured” the surprise by “submitting the disclosure to BSC just shortly
[]after” the deposition and “prior to the close of discovery.” (Pls.’ Resp. to Def.’s Mot. to
Exclude the Ops. & Test. of Dr. Pando [Docket 175], at 6). To be more precise, the plaintiffs’
submitted Dr. Pando’s report eight days after his deposition and one day before the close of
discovery. Compared to Goldman, wherein the party filed the expert report one day after the
deposition, Goldman, 2014 WL 3407066, at *3, this “cure” is not satisfactory. Furthermore, the
88
plaintiffs’ failure to timely disclose Dr. Pando as an expert prevented BSC from timely filing a
Daubert objection to Dr. Pando’s expert testimony. (Pretrial Order # 95 (requiring Daubert
motions to be submitted by July 18, 2014)). The plaintiffs did not attempt to cure this issue at all.
This case does not implicate the third factor in Hoyle. I thus move to the fourth factor,
which again favors BSC’s motion. In an attempt to excuse their untimeliness, the plaintiffs
maintain that Dr. Pando was not available for deposition at any time prior to July 22, 2014. Even
if this is true, the plaintiffs could have taken various actions to prepare BSC for Dr. Pando’s
expert testimony. For instance, the plaintiffs could have strategized about their use of Dr. Pando
when they met with him the first time, a month before his deposition. (Pando Dep. [Docket 1552], at 56:3). In addition, the plaintiffs could have filed a motion with the court, requesting an
extension for submitting an expert report for Dr. Pando. Instead, the plaintiffs waited fifty-one
days after the deadline set forth by this court to notify BSC that Dr. Pando would testify at trial
as an expert for specific causation.
Finally, with respect to the fifth factor, the importance of Dr. Pando’s testimony carries
little weight here, considering that at least one other expert for the plaintiffs can provide specific
causation opinions for Ms. Betancourt. (See, e.g., Walmsley Report [Docket 110-10] (providing
specific causation opinion testimony for Ms. Betancourt)); see also Tyree v. Boston Scientific
Corp., 2:12-cv-08633, 2014 WL 5320566, at *59 (S.D. W. Va. Oct. 17, 2014) (concluding that
“Dr. Shobeiri’s report is not necessarily crucial to the plaintiff’s ability to be heard on the merits
of her case” because another expert is available to opine on specific causation).
Under the Federal Rules of Civil Procedure and Hoyte, the plaintiffs’ disclosure of Dr.
Pando is untimely, and I find that the untimeliness is not substantially justified or harmless.
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Accordingly, I GRANT BSC’s Motion to Exclude the Opinions and Testimony of Dr. Pando
[Docket 155].
IV.
Plaintiffs’ Daubert Motions
The plaintiffs move to limit or exclude the testimony of Dr. Stephen H. Spiegelberg, Dr.
Stephen Badylak, Dr. Matthew F. Davies, Dr. Christine L. Brauer, and Dr. Gary L. Winn.
A. Motion to Exclude the Testimony of Stephen H. Spiegelberg, Ph.D.
The plaintiffs seek to exclude the opinions of Dr. Stephen H. Spiegelberg. Dr.
Spiegelberg is a chemical engineer who has extensive experience in polymer science. In his
expert report, Dr. Spiegelberg concludes that polypropylene is a safe biomaterial for use in
BSC’s pelvic mesh devices and polypropylene remains the state of the art for synthetic graft
materials. On June 2, 2014, Dr. Spiegelberg filed a supplemental report because the deposition of
Frank Zakrzewski, corporate representative for Chevron Phillips Chemical Company (“Chevron
Phillips”), provides additional support for the following two opinions: (1) The Medical
Application Caution in the Material Safety Data Sheet (“MSDS”) for Marlex HGX-030-01
polypropylene resin has no scientific or medical basis; (2) BSC’s pelvic mesh devices contain
two different antioxidants; therefore, BSC mesh does not undergo oxidative degradation in vivo.
(Spiegelberg Supplemental Report [Docket 111-1], at 1). The plaintiffs argue that (1) Dr.
Spiegelberg’s opinions regarding position statements by medical organizations; and (2) his state
of mind or intent opinions related to the MSDS should be struck. (Pls.’ Mem. of Law in Supp. of
their Mot. to Exclude the Ops. & Test. of Stephen H. Spiegelberg, Ph.D. (“Pls.’ Mem. re:
Spiegelberg”) [Docket 112], at 1).
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I have previously reviewed the opinion testimony of Dr. Spiegelberg under Daubert. See
Tyree, et al. v. Boston Scientific Corp., No. 2:12-cv-08633, 2014 WL 5320566, at *60–62 (S.D.
W. Va. Oct. 17, 2014). While the parties in this case have not relied on precisely the same
arguments, my reasoning and conclusions from Tyree still govern. Furthermore, to the extent that
there are differences in fact and exhibits, the court does not find them sufficiently materially.
1. Opinions Regarding Position Statements by Medical Organizations
The plaintiffs seek to exclude Dr. Spiegelberg’s references to physician organization
statements promoting the safety and efficacy of polypropylene material, including those of the
American Urogynecological Society (“AUGS”) and the Society for Female Urology and
Urodynamics (“SUFU”). Dr. Spiegelberg writes that “this history of safe use has been
recognized by leading medical organizations for the treatment of female pelvic floor disorders.”
(Spiegelberg Supplemental Report [Docket 111-1], at 3).
Plaintiffs argue that Dr. Spiegelberg’s characterization and use of these statements should
be excluded because Dr. Spiegelberg is unqualified and lacks reliable methodology. As I
indicated previously during these MDLs, position statements are not expert opinions. Huskey v.
Ethicon, Inc., No. 2:12-cv-05201, 2014 WL 3362264, at *33 (S.D. W. Va. Jul. 8, 2014). Dr.
Spiegelberg is not using his “scientific, technical, or other specialized knowledge” in making
these statements. Fed. R. Evid. 702. Therefore, I will not address the admissibility of this
testimony here and RESERVE this ruling for trial.
2. Opinions Related to Chevron Phillips’s State of Mind or Intent
The plaintiffs also seek to exclude Dr. Spiegelberg’s opinions in both his expert and
supplemental report related to the MSDS created by Chevron Phillips, the company whose
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polypropylene BSC used in the manufacturing of POP mesh. The plaintiffs argue that these
MSDS opinions are a “backdoor attempt” to opine about Chevron Phillips’s state of mind or
intent. (Pls.’ Mem. re: Spiegelberg [Docket 112], at 5). The majority of Dr. Spiegelberg’s expert
report properly reviews BSC records, scientific literature, and other expert reports to come to his
conclusions. Section I (Polypropylene Raw Material was Appropriate for Use in Boston
Scientific’s Devices), however, crosses the line into state of mind. In Tyree, I ruled as follows:
Although Dr. Spiegelberg’s opinion, that the Medical Application Caution was
not added for any scientific reason, could have been based on the analysis present
throughout his report, instead, he specifically refers to a history of “liability
concerns.” (Spiegelberg Report [Docket 215-13], at 40 (“Resin manufacturers,
mindful of Dow Corning’s lawsuits involving their supply of silicone for breast
implants, are often reluctant to supply raw material for medical devices based
purely on liability concerns, rather than performance concerns.”)). Dr.
Spiegelberg infers that Chevron Phillips added the Medical Application Caution
because it was concerned with liability merely because it is his personal belief and
he discovered no evidence to the contrary.
In his supplemental report, Dr. Spiegelberg reiterates his belief that Chevron
Phillips “did not add the statement based on any scientific or medical concerns
with transvaginal mesh.” (Spiegelberg Supplemental Report [Docket 215-1], at 3
(emphasis added)). He bolsters this conclusion by relying on a deposition that is
both vague and unclear. Dr. Spiegelberg filed a supplemental report after
reviewing the deposition of Mr. Zakrzewski. While Dr. Spiegelberg states that the
deposition provides additional support for his opinions, it is in fact an unreliable
source. Mr. Zakrzewski clearly indicates that he has no knowledge of who wrote
the MSDS or why it was written. (See Zakrzewski Dep. [Docket 215-14], at 45).
Dr. Spiegelberg uses the deposition to unequivocally opine that there is no
scientific evidence behind the MSDS; however, Mr. Zakrzewski only states that
he was not aware of any scientific testing. (Id. at 47). Mr. Zakrzewski’s
statements are inconclusive and in no way enable Dr. Spiegelberg to infer that
Chevron Phillips lacked a scientific basis in adding the caution.
While an expert may testify as to a review of internal corporate documents solely
for the purpose of explaining the basis for his opinions—assuming the opinions
are otherwise admissible—Chevron Phillips’s knowledge, state of mind, alleged
bad acts, failures to act, or other matters related to corporate conduct and ethics
are not appropriate subjects of expert testimony because opinions on these matters
will not assist the jury. See, e.g., In re Rezulin Prods. Liab. Litig., 309 F. Supp. 2d
92
531, 547 (S.D.N.Y. 2004) (“Inferences about the intent or motive of parties or
others lie outside the bounds of expert testimony . . . the question of intent is a
classic jury question and not one for the experts.”) (internal quotation marks
omitted); In re Fosamax Prods. Liab. Litig., 645 F. Supp. 2d 164, 192 (S.D.N.Y.
2009) (precluding testimony as to “the knowledge, motivations, intent, state of
mind, or purposes of” a company and its employees because it “is not a proper
subject for expert or even lay testimony”). Accordingly, I FIND that Dr.
Spiegelberg’s opinions related to Chevron Phillips’s state of mind or intent
associated with the MSDS should be EXCLUDED.
Tyree, 2014 WL 5320566, at *61. Therefore, I ADOPT my prior ruling on Dr. Spiegelberg, as
stated in Tyree, and FIND that his opinions related to Chevron Phillips’s state of mind associated
with the MSDS should be EXCLUDED.
Thus, the plaintiffs’ Motion to Exclude the Testimony of Dr. Spiegelberg [Docket 111] is
RESERVED IN PART and GRANTED IN PART.
B. Motion to Exclude the Testimony of Stephen Badylak, M.D.
The plaintiffs seek to exclude the opinions of Dr. Stephen H. Badylak. Dr. Badylak is a
medical doctor and biomaterials expert with research experience related to polypropylene. In his
expert report, Dr. Badylak concludes that (1) polypropylene mesh is an appropriate implantable
material to reinforce soft tissue; (2) there is no evidence that BSC’s mesh experiences any form
of device failure; (3) pathologic evaluation of the mesh shows no evidence of physical fracture,
deformation, failure, or polypropylene degradation; (4) BSC reasonably relied on a preclinical
study in proceeding to market with the mesh; (5) BSC’s design history files are complete; (6)
Type-1 polypropylene mesh is non-toxic, non-carcinogenic, and non-degradable in the body; (7)
implanting the mesh transvaginally does not increase risk of infection; (8) the design and testing
of the BSC devices complied with accepted industry and scientific standards; and (9)
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examination of two specimens is consistent with the expected response to polypropylene material
and does not evidence product defect. (Badylak Report [Docket 113-6], at 4, 8, 10–17).
On June 16, 2014, Dr. Badylak filed a supplemental report because the deposition of
Frank Zakrzewski provides additional support for Dr. Badylak’s opinion that the Medical
Application Caution in the MSDS for the raw polypropylene material used in BSC’s surgical
mesh was not based upon or supported by safety concerns, scientific testing, or scientific data.
(Badylak Supplemental Report [Docket 113-1], at 1).
The plaintiffs argue that (1) Dr. Badylak’s opinions regarding position statements by
medical organizations; and (2) his state of mind or intent opinions related to MSDS should be
struck. (Pls.’ Mem. of Law in Supp. of their Mot. to Exclude the Ops. & Test. of Stephen F.
Badylak, D.V.M., Ph.D., M.D. (“Pls.’ Mem. re: Badylak”) [Docket 114], at 1).
I have previously reviewed the opinion testimony of Dr. Badylak under Daubert. See
Tyree, et al. v. Boston Scientific Corp., No. 2:12-cv-08633, 2014 WL 5320566, at *62 (S.D. W.
Va. Oct. 17, 2014). While the parties in this case have not relied on precisely the same
arguments, my reasoning and conclusions from Tyree still govern. Furthermore, to the extent that
there are differences in fact and exhibits, the court does not find them sufficiently materially.
1. Opinions Regarding Position Statements by Medical Organizations
The plaintiffs seek to exclude Dr. Badylak’s references to physician organization
statements promoting the safety and efficacy of polypropylene material, including those of
AUGS and SUFU. Dr. Badylak writes that “[t]his resin has a long history of safe and effective
use in the body and continues to be used today.” (Badylak Supplemental Report [Docket 113-1],
at 3). He subsequently quotes the same position statement regarding polypropylene that Dr.
94
Spiegelberg references in his testimony. As discussed more fully supra related to Dr.
Spiegelberg’s expert opinions and consistent with those findings, I will not address the
admissibility of this testimony here because position statements are not expert opinions. Huskey
v. Ethicon, Inc., No. 2:12-cv-05201, 2014 WL 3362264, at *33 (S.D. W. Va. July 8, 2014). I
RESERVE these evidentiary rulings for trial.
2. Opinions Related to Chevron Phillips’s Knowledge, State of Mind, and
Corporate Conduct
The plaintiffs also seek to exclude Dr. Badylak’s opinions in both his expert and
supplemental report related to the MSDS created by Chevron Phillips, the company whose
polypropylene Boston Scientific used in the manufacturing of POP mesh. The plaintiffs argue
that these MSDS opinions are a “backdoor attempt” to opine about Chevron Phillips’s state of
mind or intent. (Pls.’ Mem. re: Badylak [Docket 114], at 5). A portion of the MSDS testimony in
Dr. Badylak’s report, as well as all MSDS testimony in the supplemental report are almost
identical to Dr. Spiegelberg’s testimony. (Badylak Report [Docket 113-6], at 7 (“I have not seen
any evidence to indicate the additional language was supported by safety concerns or other
scientific data.”); Badylak Supplemental Report [Docket 113-1], at 1, 3 (“Mr. Zakrzewski’s
testimony lends additional support to my opinion that the medical application statement in the
MSDS for the raw polypropylene material used in Boston Scientific’s surgical mesh was not
based upon, nor supported by, safety concerns, scientific testing or data.”)). As discussed more
fully supra related to Dr. Spiegelberg’s expert opinions and consistent with those findings, I
FIND that Dr. Badylak’s opinions related to Chevron Phillips’s state of mind or intent associated
with the MSDS should be EXCLUDED.
Thus, the plaintiffs’ Motion to Exclude the Testimony of Dr. Badylak [Docket 113] is
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RESERVED IN PART and GRANTED IN PART.
C. Motion to Exclude the Testimony of Matthew F. Davies, M.D.
Plaintiff Mania Nunez seeks to limit or exclude the testimony of Dr. Matthew F. Davies
because “[his] methodology and resulting opinions related to a pre-existing infectious etiology
for mesh complications generally and in Ms. Nunez specifically are not based upon sufficient
underlying facts and data and are not the product of reliable scientific principles and methods.”
(Pl. Mania Nunez’s Mem. of Law in Supp. of Her Mot. to Limit the Ops. & Test. of Dr. Matthew
F. Davies, M.D. (“Pl.’s Mem. re: Davies”) [Docket 116], at 4). Dr. Davies is a board certified
physician of Obstetrics and Gynecology, as well as the director of the Division of
Urogynecology and Minimally Invasive Surgery at Penn State Milton S. Hershey Medical
Center. Dr. Davies’s clinical practice is focused on the treatment of women with pelvic floor
disorders, and he has completed over 600 mesh-based prolapse repairs. In his expert report, Dr.
Davies concludes that the plaintiff’s extrusions do not indicate a defect in the Pinnacle device
and that the mesh extrusion that occurred was instead a “healing issue.” (Davies Report [Docket
115-2], at 14).
I note that Dr. Davies’s report includes multiple risk factors that he believes contributed
to the plaintiff’s “improper healing.” (Id. at 10). Nevertheless, the plaintiff has chosen to object
to Human Papillomavirus (“HPV”) as a risk factor and not one of the many others mentioned.
(See id. (“Research has shown there are other risk factors which increase the incidence of
extrusions. Such risk factors include concomitant hysterectomy especially with a T – incision,
and a midline incision compared to a transverse incision at the urethrovesical junction.”); see
also id. at 15 (“As to her third extrusion, Ms. Nunez was at that time suffering from atrophic
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vaginitis and hypoetrogenism . . . The decrease in estrogen causes a weakening of vaginal tissue
which also can lead to a higher risk of mesh extrusions.”); see also id. (“Her third extrusion was
associated with atrophic vaginal changes from her surgical menopause. As stated earlier, these
thinner tissues certainly place her at risk for mesh extruding thru [sic] her incision line.”)).
The plaintiff specifically challenges Dr. Davies’s opinions regarding pre-existing tissue
infection related to the human papillomavirus (“HPV”) as the cause of the plaintiff’s
complications. The plaintiff argues that Dr. Davies’s testimony is “based on his unfounded
premise that (1) such an infection can cause mesh complications generally, (2) Plaintiff was
positive for HPV at the time of her implant surgery, and (3) pre-existing HPV caused Plaintiff’s
mesh complications post-operatively.” (Pl.’s Mem. re: Davies [Docket 116], at 3). The plaintiff’s
motion is not organized according to the objections cited above. Instead, it cites a number of
instances where the plaintiff believes Dr. Davies incorrectly testifies when the plaintiff was
diagnosed with HPV. For the reasons explained below, the plaintiff’s motion is DENIED.
1. HPV Diagnosis
By way of brief background, on February 22, 2008, Ms. Nunez visited her primary care
physician, Dr. Lugo, reporting heavy bleeding during her period and pelvic pain. (Davies Report
[Docket 115-2], at 9). On May 12, 2008, Dr. Lugo diagnosed Ms. Nunez with fibroids,
menorrhagia, and a rectocele. (Id.). Dr. Lugo referred Ms. Nunez to Dr. Salom, a specialist, to
evaluate her gynecological issues and prolapse. (Id.). On August 27, 2008, Dr. Bratter, assisted
by Dr. Salom, performed a total vaginal hysterectomy with ovary preservation and a posterior
repair using Pinnacle PFR system. (Id.). Following her first surgery, Ms. Nunez visited her
doctors at least seven times presenting with complications. (See id. at 10–11). On August 20,
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2010, Ms. Nunez was diagnosed with HPV. (Id. at 11). On October 27, 2010, Dr. Mendez
performed a bilateral salpingooophorectomy (removal of her ovaries) and excision of vaginal
mesh. (Id.). Following her second surgery, Ms. Nunez visited her doctors at least six times
presenting with complications. (See id. at 12–13). On June 19, 2012, Dr. Mendez performed an
excision of a two by one centimeter portion of mesh from the posterior vagina intimately
involved with the rectum. (Id. at 13). Following her third surgery, Ms. Nunez visited Dr. Mendez
three times, presenting with no symptoms or complications. (See id. at 13–14).
The plaintiff argues that Dr. Davies incorrectly opines that the plaintiff had HPV in 2008
before her first surgery. The court has reviewed Dr. Davies’s expert report and deposition
thoroughly, noting every reference he makes to HPV. Not once does Dr. Davies opine that the
plaintiff had HPV at any time before August 10, 2010, when she was diagnosed. All of Dr.
Davies’s references to HPV are accurate statements of fact based on the record.
Furthermore, I agree with BSC that the plaintiff “misconstrues Dr. Davies[’s] opinions on
this matter.” (Mem. in Opp’n to Pls. Mot. to Limit the Ops. & Test. of Dr. Matthew F. Davies,
M.D. (“BSC’s Resp. re: Davies”) [Docket 136], at 2). For example, the plaintiff objects to Dr.
Davies’s recitation of the plaintiff’s pre-existing medical history, specifically his reference to
chronic cystic cervicitis. Chronic cystic cervicitis is not HPV. In his deposition, Dr. Davies
discusses HPV as a possible cause of chronic cystic cervicitis, indicating that they are not the
same thing. (Davies Dep. [Docket 136-3], at 214). He also clearly states that there are other
possible causes of chronic cystic cervicitis, and he cannot confirm whether or not HPV was the
official cause without a diagnosis. (Id.).
The plaintiff also objects to Dr. Davies’s explanation of possible factors contributing to
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her mesh extrusion and excision procedure. (See Davies Report [Docket 115-2], at 10 (“This
mesh extrusion and the excision procedure it necessitated is not attributable to a defect in her
Pinnacle mesh, but rather, as explained more fully below, is likely the result of a combination of
factors including improper healing due to her concomitant hysterectomy, placement of the sling
which was potentially too superficial, and gross vaginal infection in her incision site.”). Again,
the plaintiff incorrectly emphasizes “gross vaginal infection” with the belief that this is a
reference to HPV. In his deposition, Dr. Davies clarifies that the gross vaginal infection he is
referring to is vaginal cuff cellulitis, not HPV. (Davies Dep. [Docket 136-3], at 238).
Accordingly, I FIND that Dr. Davies is permitted to testify about the plaintiff’s HPV diagnosis.
2. HPV Effect on Mesh
The plaintiff objects to two statements made by Dr. Davies regarding her second surgery
on October 27, 2010, which the plaintiff contends relate to the premise that HPV causes mesh
complications generally:
For the second surgery (in October 2010), Ms. Nunez had ongoing viral infection
in her vaginal tissue due to mild squamous dysplasia and HPV. Such a viral
infection of vaginal tissue resulted in pain and dyspareunia as well as increase her
risk of mesh extrusions.
Secondly, her infections with HPV and bacterial vaginosis lead to discharge, pain
and dyspareunia as seen at the time of her second extrusion surgery.
(Davies Report [Docket 115-2], at 15). 16 The plaintiff argues that Dr. Davies’s conclusions are
unreliable ipse dixit opinions, which are unsupported by any testing or other reliable
methodology. (Pl.’s Mem. re: Davies [Docket 116], at 5). District courts have “considerable
leeway” in applying Daubert’s reliability factors, and a full reading of Dr. Davies’s expert report
16
It is unclear why the plaintiff chose to object to these two statements, when Dr. Davies makes additional
references to HPV and the second surgery at the end of his report. Therefore, I will assume that the plaintiff objects
to all references regarding the effect HPV had on the plaintiff’s second surgery.
99
illustrates his conclusions and methodology regarding HPV are sound. Kumho Tire Co., Ltd. V.
Carmichael, 526 U.S. 137, 152 (1999). Dr. Davies opines that HPV weakens vaginal tissue,
which in turn increases the risk of mesh extrusions. Dr. Davies’s opinion is based on “(1) his
observations during his twenty plus years clinical experience with mesh; (2) his knowledge
based on his medical training and education; (3) his knowledge based on his research and
publications on mesh based POP repair; and (4) his knowledge based on his review of the
medical and scientific literature.” (BSC’s Resp. re: Davies [Docket 136], at 5). Additionally, Dr.
Davies has ample clinical experience, having completed over 600 mesh-based prolapse repairs
and has researched and written about HPV. (Davies Dep. [Docket 136-3], at 207); Davies Report
[Docket 115-2], at 14). Accordingly, I FIND that Dr. Davies is permitted to testify about HPV
infections causing mesh complications generally.
Thus, Plaintiff Nunez’s Motion to Exclude the Testimony of Dr. Davies [Docket 115] is
DENIED.
D. Motion to Exclude the Testimony of Christine L. Brauer, Ph.D.
The plaintiffs seek to exclude or limit the expert opinions of Dr. Christine Brauer. Dr.
Brauer is a former FDA employee and regulatory consultant who offers opinions regarding the
FDA regulatory process and BSC’s regulatory activities. Plaintiffs argue that Dr. Brauer’s
“opinion testimony regarding: (1) the FDA regulatory scheme; (2) the FDA clearance of BSC
devices at issue in this litigation; (3) BSC’s Directions for Use, Patient Labeling and Patient
Brochures; (4) FDA MAUDE Database and MDR Reports; (5) FDA Advisory Panel Meetings;
and (6) BSC’s Corporate Warning Letter” should be excluded in its entirety. (Pls.’ Mem. of Law
in Supp. of Mot. to Exclude, or Limit the Test. of BSC’s Expert Christine Brauer, Ph.D. [Docket
100
118], at 1–2).
I have previously reviewed the opinion testimony of Dr. Brauer under Daubert. See
Sanchez, et al. v. Boston Scientific Corp., No. 2:12-cv-05762, 2014 WL 4851989, at *36–37
(S.D. W. Va. Sept. 29, 2014). The parties in this case assert the same arguments regarding the
admissibility of Dr. Brauer’s expert opinions under Daubert that I addressed in Sanchez. To the
extent that there are differences in fact and exhibits, the court does not find them sufficiently
materially. The Sanchez excerpts quoted below are to explicate the conclusions the court reaches
on the issue of Dr. Brauer’s expert opinions:
I have repeatedly and thoroughly considered the admissibility of the FDA’s
510(k) process, and I have consistently found that the 510(k) process does not
relate to safety or efficacy. Lewis v. Johnson & Johnson, 991 F. Supp. 2d 748, at
753–56 (S.D. W. Va. 2014). Therefore, the parties may not present evidence
regarding the 510(k) clearance process or subsequent FDA enforcement actions.
This is consistent with prior rulings by this court. See, e.g., Cisson v. C. R. Bard,
Inc., No. 2:11-cv-00195, 2013 U.S. Dist. LEXIS 102699, at *22 (S.D. W. Va.
July 23, 2013) (“The FDA 510(k) process does not go to safety and effectiveness
and does not provide any requirements on its own. Basically, it has no operative
interaction with state tort laws.”) (internal reference omitted); Order, Cisson v. C.
R. Bard, Inc., No. 2:11-cv-00195 (S.D. W. Va. July 1, 2013), [Docket 309], at 3–4
(“Under United States Supreme Court precedent, the FDA 510(k) process does
not go to whether the product is safe and effective . . . . Because the FDA 510(k)
process does not go to whether the [mesh] products are safe and effective and the
510(k) process does not impose any requirements on its own, the 510(k) process
is inapplicable to this case. This evidence is excluded under Federal Rule of
Evidence 402 as irrelevant, and under Rule 403 for the reasons previously stated,
including the very substantial dangers of misleading the jury and confusing the
issues.”); Mem. Op. & Order, Cisson v. C. R. Bard, Inc., No. 2:11-cv-00195 (S.D.
W. Va. June 27, 2013) [Docket 302], at 3–4 (holding that evidence regarding the
510(k) process and enforcement should be excluded under Rule 403); Mem. Op.
& Order, Huskey v. Ethicon, Inc., No. 2:12-cv-05201 (S.D. W. Va. May 12, 2014
[Docket 223], at 1 (“This is not the first time I am confronted with determining
the admissibility of evidence relating to marketing clearance under the FDA’s
510(k) process . . . In all previous cases, I excluded all evidence relating to the
510(k) process because it does not go to the safety and efficacy of medical
devices and because of the potential to mislead and confuse the jury.”).
Accordingly, I FIND that Dr. Brauer’s opinions should be excluded in their
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entirety.
Sanchez, 2014 WL 4851989, at *36–37. Therefore, I ADOPT my prior ruling on Dr. Brauer, as
stated in Sanchez, and EXCLUDE her opinions in their entirety.
E. Motion to Exclude the Testimony of Gary L. Winn, Ph.D.
The plaintiffs seek to exclude the opinions of Dr. Gary L. Winn. Dr. Winn is a professor
in Industrial and Management Systems Engineering in the Safety Management program at West
Virginia University who has approximately 30 years of experience in safety, health, and training.
(Winn Report [Docket 119-1], at 1). In his expert report, Dr. Winn offers opinions with regard to
the nature and purpose of Material Safety Data Sheets (“MSDS”) and as to the MSDS for
polypropylene used by BSC in the manufacture of its pelvic mesh products. (Id.). The plaintiffs
argue that Dr. Winn concedes he will not be offering any relevant opinions at trial, and that his
opinions should be struck entirely because (1) he is unqualified; (2) his methodology is
unreliable; and (3) his opinions are impermissible legal conclusions and factual narratives
speculating about Chevron Phillips’s knowledge. (Pls.’ Mem. of Law in Supp. of their Mot. to
Exclude the Ops. & Test. of Gary L. Winn, Ph.D. (“Pls.’ Mem. re: Winn”) [Docket 120], at 2–4).
BSC construes the plaintiffs’ motion as support for BSC’s contention that the MSDS is
irrelevant, but opposes all of the plaintiffs’ arguments specific to Dr. Winn. (See generally
BSC’s Mem. in Opp’n to Pls.’ Mot. to Exclude the Ops. & Test. of Gary L. Winn, Ph.D.
(“BSC’s Mem. re: Winn”) [Docket 281]).
I have previously reviewed the opinion testimony of Dr. Winn under Daubert. See Tyree,
et al. v. Boston Scientific Corp., No. 2:12-cv-08633, 2014 WL 5320566, at *63 (S.D. W. Va.
Oct. 17, 2014). While the parties in this case have not relied on precisely the same arguments,
102
my reasoning and conclusions from Tyree still govern. Furthermore, to the extent that there are
differences in fact and exhibits, the court does not find them sufficiently materially. In Tyree, I
ruled as follows:
In his expert report, Dr. Winn describes (1) the development of the hazard
communication standard; (2) the standardization of the content of MSDSs; and (3)
uses of MSDSs in the field. (Winn Report [Docket 229-1], at 3–8). Dr. Winn
concludes that raw polypropylene is not hazardous based on anecdotal evidence
involving other MSDSs; and therefore, the 2004 Chevron Phillips MSDS is
extraneous. (Id. at 8–10). Although I believe that the warning provided in the
MSDS is relevant, I do not believe an expert is required to discuss MSDSs
generally or the issue of whether polypropylene requires an MSDS because of its
hazardous nature. A narrative review of the history and development of MSDSs
and who uses them in the field is not helpful to the jury. The pertinent issue is that
the MSDS contained a warning (Medical Application Caution) allegedly not
heeded by BSC, not that an MSDS itself existed. This warning from the supplier
could have taken any form. 17 Accordingly, I FIND that Dr. Winn’s opinions
regarding MSDSs should be excluded in their entirety.
Tyree, 2014 WL 5320566, at *63. Therefore, I ADOPT my prior ruling on Dr. Winn, as stated in
Tyree, and FIND that his opinions related to MSDSs should be EXCLUDED in their entirety.
V.
Effect of Daubert Rulings
I emphasize that my rulings excluding expert opinions under Rule 702 and Daubert are
dispositive of their admissibility in these cases, but my rulings not to exclude expert opinions are
not dispositive of their admissibility. In other words, to the extent that certain opinions might be
cumulative or might confuse or mislead the jury, they may still be excluded under Rule 403 or
some other evidentiary rule. I will take up these issues as they arise.
VI.
Conclusion
17
In fact, in another pleading, there is evidence of an agreement between BSC and its supplier indicating it was
BSC’s responsibility to determine the suitability of polypropylene application. (See Agreement [Docket 287-6], at
3–4; see also Winn Report [Docket 229-1], at 10).
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To reiterate: For the reasons explained below, the defendant’s motion with respect to Dr.
Trepeta [Docket 86] is GRANTED IN PART and DENIED IN PART. The defendant’s motion
with respect to Dr. Margolis [Docket 88] is GRANTED IN PART and DENIED IN PART.
The defendant’s motion with respect to Dr. Barker [Docket 90] is GRANTED. The defendant’s
motion with respect to Drs. Mays and Gido [Docket 92] is GRANTED IN PART and DENIED
IN PART. The defendant’s motion with respect to Dr. Salom [Docket 94] is DENIED. The
defendant’s motion with respect to Dr. Pence [Docket 96] is GRANTED IN PART and
DENIED IN PART. The defendant’s motions with regard to Dr. Slack [Dockets 98 and 147] are
GRANTED and DENIED, respectively. The defendant’s motion with respect to Dr. Raybon
[Docket 100] is GRANTED IN PART and DENIED IN PART. The defendant’s motion with
respect to Dr. Kiley [Docket 102] is GRANTED IN PART and DENIED IN PART. The
defendant’s motion with regard to Dr. Iakovlev [Docket 104] is GRANTED IN PART and
DENIED IN PART. The defendant’s motion with regard to Dr. Walmsley [Docket 109] is
DENIED IN PART and DENIED AS MOOT. The defendant’s motion with respect to Dr.
Pando [Docket 155] is GRANTED.
The plaintiffs’ motion with regard to Dr. Spiegelberg [Docket 111] is GRANTED IN
PART and RESERVED IN PART. The plaintiffs’ motion with respect to Dr. Badylak [Docket
113] is GRANTED IN PART and RESERVED IN PART. The plaintiff’s motion with regard
to Dr. Davies [Docket 115] is DENIED. The plaintiffs’ motion with regard to Dr. Brauer
[Docket 117] is GRANTED. The plaintffs’ motion with regard to Dr. Winn [Docket 119] is
GRANTED.
104
The court DIRECTS the Clerk to send a copy of this Order to counsel of record and any
unrepresented party.
ENTER:
105
October 27, 2014
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