RBM20 and familial dilated cardiomyopathy: Mutations in various genes such as TTN, LMNA, MYH7, BAG3, TNNT2, FLNC, RBM20, SCN5A, PLN, TNNC1, TNNI3, and TPM1 are linked to the development of DCM [3].We investigated the expression of these genes between donor and DCM samples at the single cell level, but no significant differences were observed (Fig. S7).