Hong-Li Xu1, Xiao-Rong Gao, Wei Zhang, Jia-Rong Cheng, Yu-Ting Tan, Wei Zheng, Xiao-Ou Shu, Yong-Bing Xiang. 1. Department of Epidemiology, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200032, China; State Key Laboratory of Oncogene and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200032, China.
Abstract
PURPOSE: Translesion DNA synthesis (TLS) plays an important role in promoting replication through DNA lesions. Genetic polymorphisms in TLS genes may have potential roles in lung cancer development in humans. METHODS: We evaluated the association between genetic variants in six TLS genes and the risk and survival of lung cancer in a case-control study in China. Included in the study are 224 lung cancer patients and 448 healthy controls. RESULTS: Carriers of the G allele of POLκ rs5744724 had significantly reduced risk of lung cancer (odds ratio (OR)=0.62, 95% confidence interval (CI): 0.44-0.89), comparing with those carrying the C allele, and the AA genotype of PCNA rs25406 was also associated with significantly decreased cancer risk compared with the major homozygote alleles (OR=0.47, 95% CI: 0.25-0.86). Haplotype analysis showed that subjects with the POLκ C-G (rs5744533-rs5744724) haplotype had decreased risk of lung cancer (OR=0.69, 95% CI: 0.49-0.98), comparing with those carrying the C-C haplotype. Besides, the heterozygote of REV1 rs3087386 and rs3792136 were independent prognostic factors for lung cancer survival with hazard radio (HR) 1.54 (95% CI: 1.12-2.12) and 1.44 (95% CI: 1.06-1.97) respectively. CONCLUSIONS: Our findings suggested that genetic variants in POLκ and PCNA genes may play roles in the susceptibility of lung cancer, and REV1 gene may have roles in lung cancer survival in Chinese men.
PURPOSE: Translesion DNA synthesis (TLS) plays an important role in promoting replication through DNA lesions. Genetic polymorphisms in TLS genes may have potential roles in lung cancer development in humans. METHODS: We evaluated the association between genetic variants in six TLS genes and the risk and survival of lung cancer in a case-control study in China. Included in the study are 224 lung cancerpatients and 448 healthy controls. RESULTS: Carriers of the G allele of POLκ rs5744724 had significantly reduced risk of lung cancer (odds ratio (OR)=0.62, 95% confidence interval (CI): 0.44-0.89), comparing with those carrying the C allele, and the AA genotype of PCNArs25406 was also associated with significantly decreased cancer risk compared with the major homozygote alleles (OR=0.47, 95% CI: 0.25-0.86). Haplotype analysis showed that subjects with the POLκ C-G (rs5744533-rs5744724) haplotype had decreased risk of lung cancer (OR=0.69, 95% CI: 0.49-0.98), comparing with those carrying the C-C haplotype. Besides, the heterozygote of REV1rs3087386 and rs3792136 were independent prognostic factors for lung cancer survival with hazard radio (HR) 1.54 (95% CI: 1.12-2.12) and 1.44 (95% CI: 1.06-1.97) respectively. CONCLUSIONS: Our findings suggested that genetic variants in POLκ and PCNA genes may play roles in the susceptibility of lung cancer, and REV1 gene may have roles in lung cancer survival in Chinese men.
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