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December 19, 1986

CARITA RICHARDSON, et al., Plaintiffs,

The opinion of the court was delivered by: JACKSON



 This products liability case is presently before the Court on defendant's motion for judgment n.o.v. or a new trial following a jury verdict for plaintiffs of $1.16 million after a lengthy trial. It is one of a number of cases filed across the country in which the plaintiffs allege that a child's congenital limb deformities were caused by Bendectin, an anti-nauseant medication manufactured by defendant to be taken orally by the mother during pregnancy to alleviate "morning sickness."

 This trial was a virtual reprise of Oxendine v. Merrell Dow Pharmaceuticals, Inc., 506 A.2d 1100 (D.C. 1986), the only other such case known to the Court to have been tried to conclusion in a plaintiff's verdict which has survived all post-trial proceedings to date. The trial judge in Oxendine set aside the verdict and judgment with only a brief statement of reasons, but the District of Columbia Court of Appeals reversed, in an opinion which, although accurately summarizing the testimony, did not address the significance of certain evidence bearing upon the current state of scientific knowledge. In consequence, it judicially reopened an esoteric twenty-year-old controversy which is by now essentially settled within the scientific community. *fn1"

 This Court, having heard substantially the same evidence as the trial judge in Oxendine, is of the same opinion as to its efficacy. No reasonable jury could find on the basis thereof that this infant plaintiff's birth defects were more likely than not to have been caused by her intrauterine exposure to Bendectin; alternatively, even if such a finding were reasonable, it is nevertheless so clearly contrary to the weight of the evidence that the case must be retried. For the reasons hereinafter set forth, therefore, defendant's motion will be granted, and judgment notwithstanding the verdict will be entered for defendant, with a new trial granted in the alternative.


 Carita Richardson, the fourth child of Etheleen and Samuel Richardson, was born in the District of Columbia on February 16, 1976. Her siblings were normal at birth. At her birth Carita had a deformed left arm, with an underdeveloped humerus fused to the radius at the elbow, terminating in a hand with only two digits. Her right arm was normal. The right and left femurs were likewise underdeveloped, and, while her lower left leg was normal, she had no lower right leg at all. An appendage resembling a foot (later amputated) was attached directly to her right hip.

 Etheleen Richardson (then aged 38) conceived Carita approximately May 28, 1975. She developed "morning sickness," i.e., the nausea which occasionally occurs in early pregnancy (onset at about 21-28 days post conception) and began taking Bendectin, on her doctor's prescription, on or about June 28, 1975, two tablets at night and one in the morning, for at least the duration of the period of organogenesis, when Carita's limbs were forming in utero (from about the 24th through the 56th days post conception).

 In 1975 Bendectin contained 10 mg. each of dicyclomine hydrochloride, doxylamine succinate, and pyridoxine hydrochloride - an anti-cholergenic, antihistamine, and Vitamin B-6, respectively - the latter two ingredients included for their ostensible anti-nausea and anti-emetic properties. *fn2"

 Bendectin (also known as "Debendox" in the British Commonwealth, and "Lenotan" in West Germany) had been marketed by Merrell-Dow Pharmaceuticals, Inc., or its predecessors, Wm. S. Merrell Co. and Richardson-Merrell, Inc. (hereinafter "Merrell"), as an anti-nauseant since 1956. In the United States it has always been available only by prescription; in some other countries it was sold over-the-counter.

 Expert witnesses for both sides generally agreed that congenital birth defects are present in approximately two to four per cent of all live births; that limb reduction defects, specifically, occur at a rate of approximately three per thousand; that genetic or chromosomal abnormalities account for from 10 to about 15 per cent of all birth defects, and maternal illnesses, e.g. diabetes, or viral or bacterial infections, will explain perhaps three to five per cent more; and that there is a large category - a majority - to which no cause can be ascribed with certainty. They are also agreed that "environmental" factors can and do cause some of the remainder, including substances ingested by the mother. Plaintiffs assert that Carita Richardson's afflictions were caused by the Bendectin her mother took in the summer of 1975. Defendant denies it, but, being without evidence to implicate another of the known causes of birth defects, places Carita in the "unknown" category for which science has yet to find an explanation. *fn3"

 Unable to prove directly how Bendectin actually (or could have) affected Carita while in her mother's womb, plaintiffs here proceeded (as did the plaintiff in Oxendine) with circumstantial evidence. *fn4" Through the testimony of experts in several disciplines - pharmacology, embryology, veterinary medicine, and the like - they established the similarity of the chemical structure of doxylamine to that of other antihistamines known to be teratogenic in animals. Witnesses described the effects of Bendectin components in solution in in vitro experiments upon frog nerve fibers and the mesenchyme cells of mouse limb buds, postulating that other effects might occur in the human intrauterine environment, when Bendectin is infused via the mother, which could inhibit the development of fetal organs. And they criticized the animal experiments conducted by Merrell in 1963 and 1966, suggesting that Merrell's raw data had been misassessed, and the number of tests and dosage levels had been insufficient to dispel doubts about Bendectin's safety. Moreover, when such observations as Merrell had made were properly interpreted, they said, the studies did indicate Bendectin's teratogenic potential in animals which raised suspicions of a similar effect in humans. *fn5"

 Defendant's case consisted, in part, of discipline-by-discipline retorts to plaintiffs' witnesses, supplemented by the testimony of several clinicians with extensive experience in prescribing Bendectin for pregnant women or in treating malformed children, all of whom were certain no connection existed between the medication and the malformations. At least equally well-qualified defense experts asserted that a structural chemical resemblance does not import similar chemical activity; that in vitro studies on animal tissues have never been scientifically validated as predictors of physiological effects upon living human beings, and, indeed, are generally regarded as useless for the purpose; and that Merrell's animal tests had been, in fact, both properly conducted and properly interpreted, reflecting precisely the conclusions Merrell had drawn from them. Moreover, they declared, animal studies, too, are of limited usefulness in assessing a drug's teratogenic potential in humans; of some 600 known animal teratogens, only a small fraction of them have been shown to have such an effect upon human embryos. All defense witnesses, as might be expected, were of the opinion that Bendectin is not a human teratogen.

 Plaintiffs' principal witness on causation was, as in Oxendine, Dr. Alan K. Done, a pediatrician, and until three years ago, a professor of pediatrics, pharmacology, and toxicology at Wayne State University in Detroit. *fn6" (Tr. 776-1370). Based upon his knowledge of Bendectin's chemical structure, the in vitro studies, the animal teratology studies conducted by Merrell (and others), and the "human data" he had reviewed, i.e., epidemiological studies which he found defective, inconclusive, or both, Dr. Done stated that, in his opinion, to a "reasonable degree of medical certainty," Bendectin was not only "capable" of causing birth defects in humans, but that it had, in fact, caused those limb defects with which Carita Richardson had been born. *fn7"


 It was Dr. Done's testimony in principal part upon which the D.C. Court of Appeals relied in holding the Oxendine case to have been a "'classic battle of the experts . . . in which the jury must decide the victor,'" Oxendine, 506 A.2d at 1110, quoting Ferebee v. Chevron Chemical Co., 237 U.S. App. D.C. 164, 736 F.2d 1529, 1535, (D.C. Cir.), cert. denied, 469 U.S. 1062, 105 S. Ct. 545, 83 L. Ed. 2d 432 (1984), and reinstating the jury verdict for plaintiff. Dr. Brian MacMahon, Merrell's principal epidemiologist in Oxendine, reviewed the epidemiological literature and explained the discipline's method of statistical analysis, drawing his own conclusions from the several studies at variance with those of Dr. Done. It does not appear from the opinion of the D.C. Court of Appeals, however, whether Dr. MacMahon testified in Oxendine to the significance of the literature in its entirety, as distinguished from his own appraisal of the several studies he presented, as did Dr. Raymond Seltser, his counterpart in the instant case. *fn8"

 According to Dr. Seltser, beginning in 1963 (shortly after the Thalidomide tragedy) until as recently as 1985, researchers across the western world have conducted a watch on Bendectin (as well as other substances taken or intended to be taken by pregnant women) for signs of teratogenicity. The results of their studies of Bendectin and its components have been published in scientific journals in the United States, Great Britain, Australia, New Zealand, and the Federal Republic of Germany, and those articles have uniformly reported no statistically significant correlation to have been found between pre-natal exposure to Bendectin and the limb reduction defects it was suspected of causing.

 Dr. Seltser concurred, to be sure, in the researchers' assessments of their own data (as Dr. Done did not), but the importance of his testimony (Tr. 2347-2943) lies in his presentation of the totality of the published scientific literature on the subject of Bendectin exposure and the incidence of congenital malformations, which collectively represents the sum of all that can be said to be scientifically "known" of the matter at present. Excepting their own empirical observations, the "literature" is to scientists both the ultimate authority as to and the most respected repository of scientific knowledge. And the literature on Bendectin, individually and in the aggregate, fails to demonstrate Bendectin's teratogenicity to a scientifically acceptable degree of accuracy. *fn9" In short, Dr. Done, who has neither done studies of his own nor published his criticisms of those of others, testified in contradiction of (or, conversely, is contradicted by) not only Dr. Seltser but the findings of all those researchers who have studied and published in the twenty-odd years since the investigation of Bendectin began. *fn10"

 Dr. Seltser is not alone, moreover, in his judgment as to the current state of knowledge about Bendectin within the scientific community. In September, 1980, the Food and Drug Administration ("FDA") of the U.S. Department of Health and Human Services, the government agency responsible for protecting the public from harmful drugs, convened its Fertility and Maternal Health Drugs Advisory Committee (one of several standing committees the FDA maintains in being) to evaluate the evidence with respect to recurrent rumors of Bendectin-related malformations. The panel was composed of five obstetricians, a biostatistician, a neonatologist, and a "consumer representative," and was assisted by consultant-epidemiologists from the National Institutes of Health and the National Cancer Institute. It was asked by the FDA to answer three questions: whether there is, in fact, an increased incidence of birth defects among Bendectin-exposed infants; whether further animal and epidemiological studies were needed; and whether Bendectin should be withdrawn from the market. The answers, according to the testimony of Dr. David F. Archer, the chairman of the panel, (Tr. 2705-2830), were all in the negative. *fn11"

 Having been furnished the available literature several weeks in advance, the Advisory Committee held two days of hearings in Washington, D.C., September 15-16, 1980, to which the public and numerous scholars, including many of the authors of the published epidemiological studies, were invited. Some 30 witnesses, among them Dr. Done, made presentations, at the conclusion of which the Advisory Committee went into executive session and deliberated upon the evidence before it. Eight of the ten committee members were convinced that there was nothing to implicate Bendectin in an increased incidence of any birth defects whatsoever, and the other two were simply "uncertain" as to two species of malformation not involved here. The Advisory Committee reported accordingly to the FDA, and on October 7, 1980, the FDA announced its agreement with its findings, a position it has not changed in the meantime nor been given reason to do so.


 It is unnecessary to revive debate upon the wisdom of that rule of law which, for purposes of awarding damages in personal injury cases, allows unschooled triers-of-fact, whether judges or juries, to resolve those "complex and refractory causal issues . . . at the frontier of current medical and epidemiological inquiry," Ferebee, 736 F.2d at 1534, for it is obvious that Bendectin's teratogenicity vel non is no longer such an issue. The ominous hypothesis of two decades ago, namely, that Bendectin might be another Thalidomide, has been reduced to the status of a perdurable superstition by the worldwide epidemiological investigations it provoked, surviving mainly by the post hoc ergo propter hoc logic which beckons whenever deformed babies are born to women who have taken any suspect substance.

 Though Dr. Done might disagree, there is now nearly universal scientific consensus that Bendectin has not been shown to be a teratogen, and, the issue being a scientific one, reasonable jurors could not reject that consensus without indulging in precisely the same speculation and conjecture which the multiple investigations undertook, but failed, to confirm. That Dr. Done remains an unbeliever and was willing to testify to his disbelief "with reasonable medical certainty" does not mandate that this case be left as the jury decided it. Without a genuine basis "in or out of the record," even his expert "theoretical speculations" are insufficient to sustain the plaintiffs' burden of proving, by a preponderance of the evidence, that Bendectin not only causes congenital defects generally, but that, in particular, it caused those limb reduction defects with which Carita Richardson was most unfortunately born. See Merit Motors v. Chrysler Corp., 187 U.S. App. D.C. 11, 569 F.2d 666, 673 (D.C. Cir. 1977). *fn12"

  For the foregoing reasons, therefore, it is this 19th day of December, 1986,

 ORDERED, that defendant's motions for judgment n.o.v. and for a new trial in the alternative, are granted.

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