Any hypertrophic cardiomyopathy in which the cause of the disease is a mutation in the ACTC1 gene. The disease is Monarch Disease Ontology identifier MONDO_0012799 (hypertrophic cardiomyopathy 11). Also known as: ACTC1 hypertrophic cardiomyopathy, CMH11, cardiomyopathy familial hypertrophic 11, cardiomyopathy, familial hypertrophic, type 11, cardiomyopathy, hypertrophic, 11, hypertrophic cardiomyopathy caused by mutation in ACTC1, hypertrophic cardiomyopathy type 11.