TNNI3 and familial dilated cardiomyopathy: Our previous study on cardiac Troponin I3 (TNNI3) [23], [24] and Troponin T2 (TNNT2) [25] in hypertrophic cardiomyopathy (HCM), and cardiac actin (ACTC) [26], myosin binding protein C (MyBPC3) [20], had revealed few variants, of which a 25 bp deletion was found to be associated with both HCM and DCM in India and south Asia [20].