(Justice Willett and Justice Guzman not sitting) 09-0073 Merck & Co. Inc. v. Felicia Garza, et al. from Starr County and the Fourth District Court of Appeals, San Antonio For petitioner: Stephen G. Tipps, Houston For respondents: Kevin Dubose, Houston A principal issue is whether clinical-testing evidence showing a less-than-double risk in the general population, combined with other evidence, can legally prove toxic-injury causation under Havner's more-likely-than-not reliability standard. Garza sued Merck after her husband, who had a history of heart ailments, died of rare simultaneous arterial clots after taking Vioxx prescribed by his cardiologist. Merck challenged as legally insufficient Garza's expert testimony in a motion to disregard the jury verdict for Garza. The court of appeals initially reversed and rendered judgment for Merck, holding that Garza did not refute with reasonable certainty that her husband's pre-existing heart condition was a plausible cause of death. On rehearing, the appeals court held that Garza's expert testimony met Havner's requirements. The first argument begins at 9 a.m. in the courtroom in Austin. Each side will have 20 minutes for argument. This advisory serves only as an abbreviated guide to oral argument. Summaries are prepared by the Court's staff attorney for public information and reflect his judgment alone on facts and legal issues and in no way represent the Court's opinion about case merits. Texas Supreme Court advisory Contact: Osler McCarthy, Staff Attorney for Public Information (512) 463.1441 or email: osler.mccarthy@courts.state.tx.us