Any hypertrophic cardiomyopathy in which the cause of the disease is a mutation in the TNNT2 gene. The disease is Monarch Disease Ontology id MONDO_0007266 (hypertrophic cardiomyopathy 2). Also known as: CMH2, TNNT2 hypertrophic cardiomyopathy, cardiomyopathy familial hypertrophic 2, cardiomyopathy, familial hypertrophic, type 2, cardiomyopathy, hypertrophic, 2, familial hypertrophic cardiomyopathy type 2, hypertrophic cardiomyopathy caused by mutation in TNNT2, hypertrophic cardiomyopathy type 2.