Biogen Plunges as Multiple Sclerosis Drug Fails in TrialBy
Stock falls most since July 2015 on mid-stage trial miss
Patients didn’t do significantly better than those on placebo
Biogen Inc. plunged the most in almost a year after an experimental drug for multiple sclerosis that investors and patients had hoped might alter the course of the neurological disease failed in a mid-stage trial.
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