Cytokinetics Announces Initiation of Phase 1 Study of Aficamten in Healthy Japanese Participants

About this update from Cytokinetics, Incorporated

[{"type":"text","content":"SOUTH SAN FRANCISCO, Calif., June 17, 2024 (GLOBE NEWSWIRE) -- Cytokinetics, Incorporated (Nasdaq: CYTK) today announced that the first participants have been dosed in a Phase 1 study evaluating the pharmacokinetics, safety and tolerability of aficamten in healthy Japanese and Caucasian participants. “We are conducting this Phase 1 bridging study to characterize the pharmacokinetics of aficamten in healthy Japanese adults and to gather evidence that we believe will be required for potential approval in Japan,” said Fady I. Malik, M.D., Ph.D., Cytokinetics’ Executive Vice President of Research & Development. “In parallel, we are continuing to execute on our later-stage global clinical development program for aficamten alongside preparing regulatory submissions in the U.S. and Europe which we expect to submit this year.” Phase 1 Clinical Trial Design The primary objective of this Phase 1 double-blind, randomized, placebo-controlled study is to evaluate the pharmacokinetics of aficamten following administration of single ascending doses and multiple doses in 70 healthy Japanese and Caucasian participants. The secondary objective is to evaluate the safety and tolerability of aficamten in healthy Japanese and Caucasian participants. The study will enroll four cohorts including three single-ascending cohorts and one multiple dose cohort. Cohorts 1, 2 and 3 will enroll 10 Japanese participants and 10 Caucasian participants each, randomized on an 8:2 basis to receive single-ascending doses of aficamten (5 mg, 10 mg and 20 mg, respectively) or placebo. Enrollment of Cohort 2 and Cohort 3 will commence upon evaluation of the safety of the preceding Cohort. Following the completion of the single ascending dose cohorts, Cohort 4 will enroll 10 healthy Japanese participants randomized on an 8:2 basis to receive single doses of aficamten (5 mg) or placebo, once daily for 14 days. About Aficamten Aficamten is an investigational selective, small molecule cardiac myosin inhibitor discovered following an extensive chemical optimization program that was conducted with careful attention to therapeutic index and pharmacokinetic properties and as may translate into next-in-class potential in clinical development. Aficamten was designed to reduce the number of active actin-myosin cross bridges during each cardiac cycle and consequently suppress the my...

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