Second Time’s The Charm: Amylyx’s ALS Drug Wins US FDA Panel Nod
In switching their votes from the first panel review in March, advisory committee members cited supportive additional analyses of a survival benefit, framing of the issues in the context of unmet need and regulatory flexibility, and the company’s statement that it would withdraw AMX0035 if the Phase III PHOENIX trial does not succeed.
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Agency considered Amylyx’s plan to submit unblinded efficacy data from the ongoing Phase III trial during the ALS drug's NDA review but ultimately decided against it, citing concerns about study integrity and the small amount of data likely to be available.
Regulatory Flexibility: US FDA Approves Amylyx’s Relyvrio For ALS Despite ‘Degree Of Residual Uncertainty’
The single positive Phase II CENTAUR study, along with confirmatory evidence of benefit on long-term survival in the open-label extension, demonstrate substantial evidence of effectiveness, the agency says, acknowledging a level of uncertainty that is acceptable in the disease context.
After the Aduhelm controversy, Biogen has another neurodegenerative disease drug which so far can only show efficacy against surrogate biomarkers – will the FDA be swayed again this time?