MFN1 and familial dilated cardiomyopathy: The relative expression of Mitofusin-1 and Mitofusin-2 proteins increased in ADR (0.83 ± 0.14 vs. 0.36 ± 0.08, P = 0.001; 0.85 ± 0.11 vs. 0.41 ± 0.04, P = 0.001) and PER (0.86 ± 0.07 vs. 0.36 ± 0.08, P < 0.001; 0.82 ± 0.12 vs. 0.41 ± 0.04, P = 0.001) group, respectively, in comparison with DCM group.