Oxidative phosphorylation components (NDFs, COXs, TCIRG1, LHPP) and chemical carcinogenesis pathways involving reactive oxygen species (CYP1B1, GSTs, AKT2, IKBKB, MAPK3, MAP2K2) exacerbate DNA damage and promote tumour aggressiveness. This evidence concerns the gene MAPK3 and neoplasm.