Bristol Myers Squibb (NYSE:BMY) today announced new long-term follow-up results from the EXPLORER-LTE cohort of the MAVA-Long-Term Extension (LTE) study evaluating CAMZYOS (mavacamten) in adult patients with New York Heart Association (NYHA) class II-III symptomatic obstructive hypertrophic cardiomyopathy (oHCM).

The long-term follow-up efficacy and safety data, presented today at the European Society of Cardiology (ESC) Congress in London, reinforce the established efficacy and safety profile of CAMZYOS, a first-in-class cardiac myosin inhibitor. With inclusion in both the ESC and AHA/ACC clinical guidelines as a recommended option for when symptoms persist after first-line therapy, CAMZYOS is a standard of care for symptomatic oHCM.

Patients experienced consistent and sustained improvements in echocardiographic measures and biomarkers after up to 3.5 years (180 weeks) of continuous treatment, including resting left ventricular outflow tract (LVOT) gradient, Valsalva LVOT gradient, left atrial volume index and N-terminal pro B-type natriuretic peptide (NT-proBNP) levels. They also experienced an improvement in symptoms and functional capacity as measured by NYHA class and patient-reported outcomes, including most patients achieving NYHA class I. The safety profile of CAMZYOS for up to 3.5 years remained consistent with the established safety profile, with no new safety signals identified.