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.
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BrainStorm, which has a history of antagonizing FDA with direct appeals to patients for NurOwn, tells investors that public elements of an adcomm could be ‘persuasive,’ but first step will be formal meeting request to try to overcome the RTF. Firm sees Relyvrio as template for success.
Pink Sheet Drug Review Profile looks at how the agency determined that Amylyx’s ‘conceptual basis’ for use of the drug’s two active ingredients to treat ALS was enough to satisfy the combination drug rule; the sponsor also was allowed to submit certain animal studies and drug-drug interaction data during the course of the NDA review.
Even in a rare disease with no approved treatments, the agency shows once again that without clear efficacy data, FDA has few options for approval.