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2020 | HFSA

MyoKardia Announces Primary and All Secondary Endpoints Met in Phase 3 EXPLORER Clinical Trial of Mavacamten for the Treatment of Obstructive Hypertrophic Cardiomyopathy

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Brisbane, Calif., May 11, 2020 -- MyoKardia, Inc. (Nasdaq: MYOK) today announced positive topline data from the company’s Phase 3 pivotal EXPLORER-HCM clinical trial of mavacamten for the treatment of patients with symptomatic, obstructive hypertrophic cardiomyopathy  (HCM) (clinicaltrials.gov NCT03470545). Mavacamten demonstrated a robust treatment effect: the primary and all secondary endpoints of the EXPLORER trial were met with statistical significance (p≤0.0006 for all endpoints). Mavacamten was well tolerated, and meaningful improvements in symptoms, functional status and quality of life, as well as reduction or elimination in obstruction of the left ventricle, were observed among patients on treatment versus placebo.


“The extraordinary data from the EXPLORER pivotal trial confirm mavacamten’s ability to relieve dynamic outflow obstruction, control symptoms and improve quality of life in patients with hypertrophic cardiomyopathy," said Iacopo Olivotto, M.D., Careggi University Hospital and lead clinical investigator for the EXPLORER-HCM clinical trial. "HCM is the most common inherited cardiovascular disease, and patients face an uncertain journey that all too frequently includes debilitating symptoms, as well as serious complications, such as heart failure, stroke and cardiac arrest. Mavacamten is the first drug developed to target the specific molecular defect of the disease. EXPLORER represents a major achievement toward a precision-medicine approach in cardiomyopathies and should provide great hope to a community painfully aware of the lack of disease-specific treatment options.”

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