Alnylam Pharmaceuticals Inc. offered few details on Oct. 5 about why deaths in the revusiran arm of the Phase III ENDEAVOR clinical trial were more frequent than in the placebo arm, and it’s unclear whether the failed drug’s problems were tied to efficacy, safety or both.
Alnylam fell 41.6% in after-hours trading to $41.04 per share after the company said it discontinued development of revusiran –...





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