We also found a relevant relationship between 2 enzymes in both, DCM (r = 0.616, p<0.0001) and ICM (r = 0.502, p<0.01) groups (Figure S2).The proANP and ANP levels are interrelated, and we found a strong relationship between them (r = 0.547, p<0.001) in the DCM group. The gene discussed is NPPA; the disease is familial dilated cardiomyopathy.