Too Big To Succeed? Cytokinetics Heart Failure Trial Proves Too Much For FDA Committee

US FDA asked a very typical question of its advisory committee about Cytokinetics’ omecamtiv mecarbil: is there ‘substantial evidence’ of efficacy? But in this case the issue wasn’t a trial that was too small or clearly flawed – it was whether such a large, rigorous trial should have shown more than it did.

to big to succeed
Cytokinetics couldn’t leverage its large, successful trial for omecamtiv mecarbil into a positive vote at a FDA advisory committee. • Source: Shutterstock

There is nothing unusual about the US Food & Drug Administration convening an advisory committee to weigh in on an application that relies on a single pivotal trial, with the primary question being whether the sponsor has met its burden of showing “substantial evidence” of efficacy.

The agency wrestled with that very question in a remarkable tandem of meetings for Amylyx Pharmaceuticals, Inc.’s ALS treatment...

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