hypertrophic cardiomyopathy 19 (Monarch Disease Ontology identifier MONDO_0013476) is any hypertrophic cardiomyopathy in which the cause of the disease is a mutation in the CALR3 gene. Also known as: CALR3 hypertrophic cardiomyopathy, CMH19, cardiomyopathy familial hypertrophic 19, cardiomyopathy, familial hypertrophic, type 19, hypertrophic cardiomyopathy caused by mutation in CALR3, hypertrophic cardiomyopathy type 19.