Relitigating Aduhelm: CDER’s Cavazzoni Uses Leqembi Approval To Defend Aducanumab Decision
Although Aduhelm’s accelerated approval in June 2021 ‘generated a significant amount of discussion among external stakeholders,’ CDER’s work on that application ‘led to a leap in our understanding of amyloid as a surrogate marker and a greater understanding of the role that a reduction in amyloid plaque may play in a slowing of the disease,’ drug center director says.
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Eisai says ‘narrow’ indication negated need for REMS on amyloid-related imaging abnormalities and hemorrhages in the brain. Unusual nature of accelerated approval and confirmatory trial timing means safety data from the Phase III is barely mentioned in label.
US FDA’s Post-Aduhelm Reforms Include Updated Alzheimer’s Development Guidance, Record-Keeping On Sponsor Meetings
Agency already had an action plan in hand to address concerns with the aducanumab review even before the controversial approval, but it has not been fully implemented yet. A House committee report is another nudge.
Use of expedited pathway for Biogen's Alzheimer's drug was discussed at a center director briefing in late April, where it garnered backing from several senior CDER officials, as well as CBER director Peter Marks and OCE director Richard Pazdur.