GSTP1 and colorectal cancer: Oxaliplatin-related cumulative neuropathy and neutropenia were reported to be more frequent and severe in patients with heterozygous (AG) and homozygous (GG) genotype when compared to wild allele (AA) patients (Lecomte et al., 2006; Zhong et al., 2006) The aim of our study was to find the association between DPYD and GSTP1 gene polymorphisms and toxicities with CAPOX treatment in south Indian patients with colorectal cancer.