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First Successful Cardiac Myosin Inhibitor Use for Donor-Derived HCM After Heart Transplant
Hossam Albeyoumi Mohammed1, Ashwin Pillai2, Andrew Scatola3
1Internal Medicine, University of Connecticut, Farmington, Connecticut, USA.
JACC. Case Reports
|August 11, 2026
Summary
Donor-derived hypertrophic cardiomyopathy (HCM) is rare but treatable. Mavacamten effectively reduced obstruction and improved function in a heart transplant patient, showing promise for early intervention.
Area of Science:
- Cardiology
- Transplant Medicine
- Pharmacology
Background:
- Donor-derived hypertrophic cardiomyopathy (HCM) is a rare complication after heart transplantation.
- Traditionally, diagnosis occurs years post-transplant, often presenting with significant left ventricular outflow tract obstruction.

