SAMM50 and familial dilated cardiomyopathy: In DCM hearts, there was a strong trend of downregulation for majority of genes that code components of the system (Figures 7B,C), including key subunits of TOM complex (Tomm17/20/22/40/70), TIM complex (Timm8b/10/17/21/22/23/44/50) and Samm50 (Figure 7B).