Cytokinetics announced FDA acceptance of its NDA for aficamten, a cardiac myosin inhibitor for treating obstructive hypertrophic cardiomyopathy (HCM), with a PDUFA target date of September 26, 2025. The NDA is supported by SEQUOIA-HCM Phase 3 trial results showing significant exercise capacity improvement with aficamten versus placebo, and positive impacts on clinical outcomes and cardiac biomarkers.