POSTN and familial dilated cardiomyopathy: ROC curves were created and four potential immune-related genes showed AUCs were more than 0.7 (including 0.951 for COL1A2, 0.931 for COL3A1, 0.804 for CD53, and 0.887 for POSTN, respectively) (Fig. 8A–D), suggesting that the potential immune-related genes had a good discrimination for DCM from non-DCM.