The expression trends of the hub genes between DCM and NF samples were evaluated, as shown in Fig. 5A. It was observed that VCL, ABCB1, KDR, and NGF were highly expressed in the NF group, whereas JAK2 was predominantly expressed in the DCM group (p > 0.05). The gene discussed is ABCB1; the disease is familial dilated cardiomyopathy.