A systematic study found 19 genes with strong evidence of a role in DCM47 and interestingly, seven of these genes (DES, MYH7, PLN, RBM20, SCN5, TTN, and DSP) were among the mapped RHR genes in this study, indicating shared genetics between RHR and DCM. Here, ADRB1 is linked to familial dilated cardiomyopathy.