Cytokinetics Announces Positive Topline Results From MAPLE-HCM

Core Insights - Cytokinetics announced positive topline results from the MAPLE-HCM Phase 3 clinical trial, demonstrating that aficamten outperforms the standard beta blocker metoprolol in improving peak exercise capacity in patients with obstructive hypertrophic cardiomyopathy (HCM) [1][2][3] Group 1: Clinical Trial Results - MAPLE-HCM met its primary endpoint, showing a statistically significant improvement in peak oxygen uptake (pVO2) from baseline to Week 24 for aficamten compared to metoprolol [2][4] - The safety and tolerability profile of aficamten was favorable compared to metoprolol [2] - Full results from the MAPLE-HCM trial will be presented at an upcoming medical conference [2][3] Group 2: Trial Design and Patient Enrollment - MAPLE-HCM was a Phase 3, multi-center, randomized, double-blind active-comparator trial involving 175 patients, comparing aficamten to metoprolol [4][5] - The primary endpoint was the change in pVO2 from baseline to Week 24, with secondary endpoints including changes in Kansas City Cardiomyopathy Questionnaire (KCCQ) scores and left ventricular mass index (LVMI) [4][5] Group 3: Aficamten Overview - Aficamten is an investigational selective cardiac myosin inhibitor designed to reduce myocardial hypercontractility associated with HCM [6][7] - The drug has received Breakthrough Therapy Designation from the FDA and the NMPA in China for the treatment of symptomatic obstructive HCM [8] Group 4: Regulatory Status and Future Trials - Aficamten is currently under regulatory review by the FDA, with a target action date of December 26, 2025, and is also being reviewed by the EMA and NMPA [9] - Additional clinical trials for aficamten include ACACIA-HCM, CEDAR-HCM, and FOREST-HCM, targeting various patient populations with HCM [10] Group 5: Company Background - Cytokinetics is a biopharmaceutical company focused on developing new medicines for cardiac muscle dysfunction, with over 25 years of experience in muscle biology [11] - The company is preparing for potential regulatory approvals and commercialization of aficamten following positive results from previous trials [11]