Claudia Bănescu et al. illuminats that CAT, GPX, MnSOD, and glutathione S-transferase M1 (GSTM1) and glutathione S-transferase T1 (GSTT1) gene polymorphisms are not associated with the risk of chronic myeloid leukemia (CML) except GSTP1 depending on its strong restoring ability (Bănescu et al., 2014). This evidence concerns the gene CAT and chronic myelogenous leukemia, BCR-ABL1 positive.