Additional Relevant Details Today, the U.S. Food and Drug Administration (FDA) Peripheral and Central Nervous System Drugs Advisory Committee voted 1 yes, 8 no and 2 uncertain on the question, “Does Study 302 (EMERGE), viewed independently and without regard for Study 301 (ENGAGE), provide strong evidence that supports the effectiveness of aducanumab for the treatment of Alzheimer’s disease?”. The Advisory Committee also voted 0 yes, 7 no and 4 uncertain on the question, “Does Study 103 (PRIME) provide supportive evidence of the effectiveness of aducanumab for the treatment of Alzheimer’s disease?”, and 5 yes, 0 no and 6 uncertain on the question, “Has the Applicant presented strong evidence of a pharmacodynamic effect of aducanumab on Alzheimer’s disease pathophysiology?”. Finally, the Advisory Committee voted 0 yes, 10 no and 1 uncertain on the question, “In light of the understanding provided by the exploratory analyses of Study 301 and Study 302, along with the results of Study 103 and evidence of a pharmacodynamic effect on Alzheimer’s disease pathophysiology, it is reasonable to consider Study 302 as primary evidence of effectiveness of aducanumab for the treatment of Alzheimer’s disease?”