TTN and familial dilated cardiomyopathy: Cardiomyopathy genes, including nine prespecified DCM genes including BCL2-associated athanogene-3 (BAG3), desmoplakin (DSP), LMNA, MYH7, sodium voltage-gated channel, alpha subunit 5 (SCN5A), telethonin (TCAP), cardiac troponin C (TNNC1), TNNT2, and TTN, were sequenced.