Amylyx’s ALS Drug Brings Questions On Efficacy Data Robustness To US FDA Panel
Citing numerous concerns about design of the Phase II CENTAUR trial and statistical robustness of the results, agency reviewers question whether a single study provides substantial evidence of efficacy for approval of AMX0035.
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Outcomes measures in the neurodegenerative disease space are not yet well understood by regulators, according to Amylyx, which recently received a negative opinion from the EMA for its amyotrophic lateral sclerosis drug, Albrioza.
Agency’s presentations on Biogen/Ionis’ ALS drug included differing viewpoints from the statistical and clinical pharmacology teams; the transparency and emphasis on a multidisciplinary review approach may reflect lessons learned from missteps at the Aduhelm panel review in 2020.
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.