Plaintiffs Appealing Case Management Order 100 v. Pfizer, Inc., No. 17-1140 (4th Cir. 2018)Annotate this Case
Lipitor, a pharmaceutical drug, is prescribed to lower patients’ “bad” cholesterol and triglycerides. Plaintiffs, more than 3,000 women, claim that they developed diabetes as a result of taking Lipitor. The Judicial Panel on Multidistrict Litigation consolidated the lawsuits for pretrial proceedings. The parties agreed on four bellwether cases. Plaintiffs enlisted general experts, to testify that there was a causal association between Lipitor and diabetes; specific experts, to testify that Lipitor proximately caused the onset of diabetes in the bellwether plaintiffs; and an expert biostatistician, who concluded that taking Lipitor led to a statistically significant increased risk of diabetes. Plaintiffs also sought to introduce internal Pfizer emails, information from Lipitor's labeling, a statement in Lipitor's FDA New Drug Application, and information from the Lipitor website. Citing Federal Rule of Evidence 702, the court excluded the opinions of the statistician; the general causation expert, except relating to a specific dosage; and the specific causation opinions. The rulings left the plaintiffs without their bellwether cases, limited to a subset of patients who had taken an 80 mg dose. The court issued show-cause orders asking whether any plaintiff could submit evidence that would enable her claim to survive summary judgment given prior rulings. Some plaintiffs submitted evidence showing only that they were not diabetic before taking Lipitor, that they were diagnosed with diabetes after taking Lipitor, and that they lacked certain risk factors that might make them especially likely to develop the disease. After the court rejected the evidence, the plaintiffs unsuccessfully argued that the cases ought to be returned to their transferor district courts for individual resolution on the issue of specific causation. The Fourth Circuit affirmed summary judgment for the defendants.