BAN2401 slows cognitive decline by 30% in Phase II Alzheimer's trial

Eisai Co. Ltd. (Tokyo:4523) and Biogen Inc. (NASDAQ:BIIB) presented highly anticipated detailed results for BAN2401 Wednesday at the Alzheimer's Association International Conference showing that the anti-β amyloid therapy slowed cognitive decline by as much as 30%. However, inconsistencies in the dose response and an imbalance of high-risk patients across the treatment and placebo arms may have spooked investors, with Biogen falling $45.83 (12%) to $338 in after-hours trading Wednesday. The data were presented

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