Of patients with symptomatic, obstructive hypertrophic cardiomyopathy treated with the investigational oral agent mavacamten, more than twice as many, compared with placebo, had a very large improvement from baseline in their summary quality of life score after 30 weeks of treatment in a pivotal trial with 194 patients evaluable for this endpoint.

The trial's health-related quality of life assessment, the Kansas City Cardiomyopathy Questionnaire (KCCQ), also showed an average improvement of more than 9 points, compared with placebo, in summary KCCQ scores among 98 mavacamten-treated patients, and a nearly 15-point improvement from baseline that represents a "moderate to large" improvement in overall health-related quality of life, John A. Spertus, MD, Clinical Director of Outcomes Research at Saint Luke's Mid America Heart Institute, said at the annual scientific sessions of the American College of Cardiology.

Largest Drug Benefit Ever Seen in KCCQ

The 9-point average incremental improvement on mavacamten, a selective cardiac myosin inhibitor, compared with placebo-treated patients, is "the largest drug-mediated benefit we've ever observed on the KCCQ," said Spertus, who spearheaded development of the KCCQ. 

Read the full Medscape article: Mavacamten Boosts Quality of Life in Hypertrophic Cardiomyopathy

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