Mavacamten Safety and Efficacy in a Heart Transplant Patient Exhibiting Obstructive Hypertrophic Cardiomyopathy Phenotype.

Hypertrophic cardiomyopathy is the most common inherited cardiac disease, exhibiting diverse phenotypes. Obstructive hypertrophic cardiomyopathy occurs in about two-thirds of cases and carries a worse prognosis. Mavacamten use in heart transplant recipients is limited. This paper reports a recipient who developed severe symptomatic obstructive hypertrophic cardiomyopathy phenotype/phenocopy and was initiated on mavacamten.