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Abstract
Aims: Oxaliplatin-based chemotherapy for colorectal cancer demonstrates interindividual variability in response, and polymorphisms of ERCC1, ERCC2, XRCC1, GSTP1 and GSTM1 genes may be contributing factors. Additionally, the effect of these genotypes may differ between ethnic groups. Material & Methods: A meta-analysis of the association between these genotypes and response, progression-free survival and overall survival (OS) for patients with colorectal cancer treated with oxaliplatin-based therapy is reported. Results: ERCC1 C118T (TT vs CC OS [hazard ratio (HR): 2.59; p = 0.001]), ERCC2 A2251C (CC or AC vs AA OS [HR: 1.53; p = 0.04]) and GSTP1 A313G (GG vs AA OS, [HR: 0.47; p < 0.001]) polymorphisms were associated with survival. The effect size may be larger for ERCC1 C118T and XRCC1 G1196A in Asian compared with Caucasian populations. No association was apparent for the GSTM1 genotype. Conclusion: ERCC1 C118T, ERCC2 A2251C and GSTP1 A313G polymorphisms were associated with clinical outcomes
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Financial & competing interests disclosure
The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.
No writing assistance was utilized in the production of this manuscript.