Teixeira et al.28 performing a comparative proteomic study on CCC, IDC and ischemic cardiomyopathy myocardial tissue samples, found that patients with CCC had the lowest expression of several mitochondrial energy metabolism and FA beta-oxidation proteins, and that high levels of IFN-γ in CCC cardiomyocytes reduce mitochondrial transmembrane potential. This evidence concerns the gene IFNG and ischemic cardiomyopathy.