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Biogen’s Aducanumab: One Positive Phase III Trial Is Good Enough For Demonstrating Efficacy, US FDA Says

Executive Summary

Negative results from the Phase III ENGAGE trial – which may have been influenced by imbalance in ‘rapid progressors’ and differential effects of dosing protocol changes – do not negate persuasiveness of positive results from the EMERGE study, agency says in advisory committee briefing document; statistical reviewers dissent, call for a new trial of the Alzheimer's drug.

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