Hishida et al19 have conducted a cross‐sectional data cohort study of polymorphisms of antioxidant enzymes (SOD2, CAT, GPx, TXNRD, SEPP1, SEP15, and SEPS1) in chronic kidney disease patients (CKD) from numerous Japanese institutions, revealing that only CAT C‐262T is correlated with the risk of CKD. The gene discussed is CAT; the disease is chronic kidney disease.