Contribution of Double Strand Break Repair Gene XRCC3 Genotypes to Nasopharyngeal Carcinoma Risk in Taiwan

The DNA double strand break repair protein XRCC3 plays a central role in removing double strand breaks from the genome and defects in cellular repair capacity is closely related to human cancer initiation. Therefore, we aimed to investigate the contribution of XRCC3 genotypes to individual nasopharyngeal carcinoma (NPC) susceptibility. In this hospital-based population research, the genotyping and analyzing of XRCC3 rs1799794, rs45603942, rs861530, rs3212057, rs1799796, rs861539, rs28903081 in a large Taiwanese population was performed. Totally, 176 NPC patients and 880 age- and gender-matched healthy controls were genotyped and analyzed by PCR-RFLP method. The results showed that there was a differential distribution among NPC and control subjects in the genotypic (P=0.000488) and allelic (P=0.0002) frequencies of XRCC3 rs861539. As for the gene-environment interaction, we have firstly provided evidence showing that there is an obvious joint effect of XRCC3 rs861539 CT and TT genotypes with individual smoking habits on increased NPC risk. In conclusion, the T allele of XRCC3 rs861539, interacts with smoking habit in increasing NPC risk, may be an early detection marker for NPC.

並列關鍵字

genotype ； nasopharyngeal carcinoma ； polymorphism ； Taiwan ； XRCC3

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Contribution of Double Strand Break Repair Gene XRCC3 Genotypes to Nasopharyngeal Carcinoma Risk in Taiwan

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