In another study enrolling 63 OXA-treated (mFOLFOX6) metastatic CRC patients, it was shown that GSTP1–105 (p = 0.03) and GSTM1 (p = 0.02) were associated with increased incidence of severe chronic OXAIPN [98]. This evidence concerns the gene GSTP1 and colorectal carcinoma.