OPA1 and cardiomyopathy: Twelve of the 52 mouse models identified with cardiomyopathy (Acadv1, Fxn, Mto1, Taco1, Hmgcs2, Mpv17, Opa1, Pnpla8, Tmem126b, Gpd2, Mpv17, Micu1) showed that the presence of cardiomyopathy can be dependent on the degree of stress.