Body mass index, diabetes mellitus, NYHA class, SBP, BUN, AST, TB, NT-proBNP, LAD, LVEDD, LVEF, RAS inhibitor, and LI showed potent predictive value on the primary endpoint in patients with DCM in the Univariable Cox regression models before baseline adjustment using PSM (all P < 0.05). The gene discussed is NPPB; the disease is diabetes mellitus.