PT - JOURNAL ARTICLE AU - Jian Jiang AU - Jun Liang AU - Ruyong Yao AU - Qingfang Li AU - Shanai Song AU - Yingying Sun TI - Polymorphisms of ERCC1, XPD, XRCC1 and XPG Predict Clinical Outcome in Advanced Gastric Cancer Patients Receiving Oxaliplatin-Based Chemotherapy in Chinese Population AID - 10.1007/s11805-009-0328-z DP - 2009 Oct 01 TA - Clinical Oncology and Cancer Research PG - 328--336 VI - 6 IP - 5 4099 - http://www.cancerbiomed.org/content/6/5/328.short 4100 - http://www.cancerbiomed.org/content/6/5/328.full SO - Cancer Biol Med2009 Oct 01; 6 AB - OBJECTIVE To investigate whether polymorphisms in ERCC1, XPD, XPG, XRCC1 genes are associated with clinical outcomes in advanced gastric cancer (AGC) patients treated with oxaliplatin-based chemotherapy.METHODS The genetic polymorphisms in ERCC1, XPD, XPG, XRCC1 were determined in 94 advanced gastric cancer patients treated with oxaliplatin-based chemotherapy, using TaqMan-MGB probes. The clinical response of 60 patients with stage IV disease, time to progression (TTP) and overall survival (OS) of 94 patients were evaluated.RESULTS The overall disease control rate (CR + PR + SD) of the 60 patients in stage IV was 70% (42/60). Patients with XRCC1 399 G/G, XPG 46 C/C genotypes showed enhanced response to the oxaliplatin-based chemotherapy compared to those with other genotypes (P < 0.05). The median OS and TTP of the patients were 5.5 months and 9.0 months, respectively. Among the 4 types of polymorphisms in the study, XRCC1 399 G/A + A/A, XPG 46 C/T + T/T genotypes were regarded to be associated with chemoresistance and poor survival (P < 0.05). Combination analysis of the 2 polymorphisms using the Kaplan–Meier method revealed that the TTP and OS of the patients with a number of risk genotypes were significantly shortened (P < 0.05). No significant association was found between the genotypes of the XPD codon 751, the ERCC1 codon 118 and the clinical outcome (P > 0.05).CONCLUSION Testing for XRCC1 399, XPG 46 polymorphisms may allow identification of the gastric cancer patients who will benefit from oxaliplatin-based chemotherapy. Specific polymorphisms may influence clinical outcomes of AGC patients. Selecting specific chemotherapy based on pretreatment genotyping represents an innovative strategy that warrants prospective studies.