Combined Oxidative Phosphorylation Deficiency 25, is also known as combined oxidative phosphorylation defect type 25. An important gene associated with Combined Oxidative Phosphorylation Deficiency 25 is MARS2 (Methionyl-TRNA Synthetase 2, Mitochondrial). Affiliated tissues include brain and pons, and related phenotypes are global developmental delay and depressed nasal bridge