An About Face As Biogen Says It Will File Aducanumab In Alzheimer’s
Biogen surprised investors with news that it will file aducanumab with the FDA based on data from more patients treated at the highest dose than in the interim futility analysis that led to termination of two Phase III studies in March.
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Biogen’s Aducanumab: One Positive Phase III Trial Is Good Enough For Demonstrating Efficacy, US FDA Says
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.
Biogen's stock soared 44% after the US FDA released briefing documents for a high-profile advisory committee meeting to review aducanumab for Alzheimer's disease.
Given inconsistent study results, robustness of the efficacy evidence is expected to be key focus of the 6 November meeting of the Peripheral and Central Nervous System Drugs Advisory Committee; review could put a December 2019 guidance on the ‘substantial evidence’ standard to the test and offer insight into the amount of flexibility the agency is willing to exercise for neurodegenerative diseases with high unmet need.