For example, antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) are all reduced in NSCLC in comparison with corresponding controls (Zalewska-Ziob et al., 2019), and glutathione (GSH) and its related enzymes that detoxify ROS, are increased in lung cancer (Luengo et al., 2019). The gene discussed is CAT; the disease is lung carcinoma.