Biogen’s Aducanumab: Why Accelerated Approval Might, And Might Not, Be An Option For US FDA
Use of expedited pathway based on drug’s effect on brain amyloid would be problematic given advisory committee’s views of a disconnect between biomarker data and clinical efficacy results; however, one FDA expert sees potential for agency to grant accelerated approval on basis of an intermediate clinical endpoint – the same endpoint on which Biogen seeks regular approval.
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Timeline of lecanemab’s clinical development shows how, almost three years after telling Eisai and Biogen that their Phase II results did not support regular or accelerated approval, the FDA review division reversed course following its decision to approve aducanumab on a surrogate endpoint.
Dunn is retiring after an 18-year career that included involvement in some high-profile and controversial drug approval decisions, not the least of which is Biogen’s Alzheimer’s treatment Aduhelm; deputy director Teresa Buracchio takes over the neurology office on an acting basis.
Without directly referencing the agency’s controversial approval of Biogen’s Alzheimer’s drug Aduhelm, CDER director Patrizia Cavazzoni defended US FDA’s ability to decide on use of the expedited pathway during an application review, while also stressing the need for earlier planning on evidence generation and confirmatory trials.