Pharmacogenomics of platinum-based chemotherapy response in NSCLC: a genotyping study and a pooled analysis

// Juan Chen 1,2 , Zhan Wang 3 , Ting Zou 1 , Jiajia Cui 1 , Jiye Yin 1,2 , Wei Zheng 1 , Wuzhong Jiang 3 , Honghao Zhou 1,2 and Zhaoqian Liu 1,2 1 Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P. R. China 2 Hunan Province Cooperation Innovation Center for Molecular Target New Drug Study, Hengyang, P. R. China 3 Department of Oncology, Xiangya Hospital, Central South University, Changsha, P. R. China Correspondence to: Zhaoqian Liu, email: // Keywords : platinum, NSCLC, chemotherapy response, meta-analysis, polymorphism Received : March 03, 2016 Accepted : May 23, 2016 Published : May 29, 2016 Abstract Published data showed inconsistent results about associations of extensively studied polymorphisms with platinum-based chemotherapy response. Our study aimed to provide reliable conclusions of these associations by detecting genotypes of the SNPs in a larger sample size and summarizing a comprehensive pooled analysis. 13 SNPs in 8 genes were genotyped in 1024 NSCLC patients by SequenomMassARRAY. 39 published studies and our study were included in meta-analysis. Patients with GA or GG genotypes of XRCC1 G1196 had better response than AA genotype carriers (Genotyping study: OR = 0.72, 95%CI: 0.53-0.96, P = 0.028; Meta-analysis: OR = 0.74, 95%CI: 0.62-0.89, P = 0.001). Patients carrying CT or TT genotypes of XRCC1 C580T could be more sensitive to platinum-based chemotherapy compared to patients with CC genotype (OR = 0.54, 95%CI: 0.37-0.80, P = 0.002). CC genotype of XRCC3 C18067T carriers showed more resistance to platinum-based chemotherapy when compared to those with CT or TT genotypes (OR = 0.69, 95%CI: 0.52-0.91, P = 0.009). Our study indicated that XRCC1 G1196A/ C580T and XRCC3 C18067T should be paid attention for personalized platinum-based chemotherapy in NSCLC patients.