Among them, the Z-scores of PROM1 and NANOG were higher in DCM, the Z-score of TWIST1 was higher in ICM, the Z-scores of NOTCH1, HIF1A, EPAS1, MYC and CD44 were higher in N, and the Z-scores of KDM5B, CD34 and ABCG2 were higher in RM. The gene discussed is KDM5B; the disease is familial dilated cardiomyopathy.