hypertrophic cardiomyopathy 21 (MONDO_0013852, a Monarch Disease Ontology term) is a hypertrophic cardiomyopathy associated that has material basis in region 7p12.1-q21 variation. Also known as: CMH21, cardiomyopathy familial hypertrophic 21, cardiomyopathy, hypertrophic, 21, hypertrophic cardiomyopathy type 21.