The involvement of TFP in these functions suggests that OXPHOS dysfunction could play a role in the pathogenesis of generalized HADHA TFP deficiency (OMIM #609015), generalized HADHB TFP deficiency (OMIM #620300), and isolated LCHAD deficiency (OMIM #609016), especially the development of retinopathy, peripheral neuropathy, and cardiomyopathy. This evidence concerns the gene TRIM39 and long chain 3-hydroxyacyl-CoA dehydrogenase deficiency.