AUTHOR=Hamidi Jassin , Hanel Yvonne , Dittmann Sven , Gerding Wanda Maria , Nguyen Huu Phuc , Klingel Karin , Schulze-Bahr Eric TITLE=Unusual hypertrophic cardiomyopathy: case report of an early onset wild-type ATTR amyloidosis accompanied by a chromosomal duplication involving the MYH6 and MYH7 gene JOURNAL=Frontiers in Cardiovascular Medicine VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2025.1462523 DOI=10.3389/fcvm.2025.1462523 ISSN=2297-055X