Carcinogenesis, Teratogenesis & Mutagenesis

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The relevance of XRCC1 and CCNH gene polymorphism to breast cancer and benign breast tumor in Han women of Gansu province

WANG Lan1,ZHU Gong-jian1,MIN Jian-ping1,GUO Hong-yun1,YANG Sui-sheng2, ZHANG Bin-ming2,HU Qing-rong1,YANG Kai1,CHEN Xue-zhong2,SU Hai-xiang1,*   

  1. Center of Translational Medicine Research, Gansu Provincial Academy of Medical Sciences, Lanzhou 730050
  • Received:2013-11-04 Revised:2184-02-12 Online:2014-07-30 Published:2014-07-30

Abstract:

OBJECTIVE: To study the association between XRCC1 rs25487 and CCNH rs2234942 polymorphism with the susceptibility to breast cancer and benign breast tumor in Han women in Gansu area. METHODS:Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay was used for the polymorphism of XRCC1,CCNH in 101 cases of breast cancer,101 benign breast tumors and 101 disease-free controls collected in Gansu. Logistic regression analysis was used for comparing the genotypes or clinical pathological characteristics with the risk of breast cancer. Chi-square test was used to compare menarche age and disease onset age with the risk of breast cancer or benign tumor. RESULTS:Logistic regression analysis  showed that XRCC1 rs25487,GG genotype increased the risk of breast cancer (P=0.001,OR=6.39,95%CI:2.18-18.65). Regarding the clinicopathological immunohistochemical characteristics,the distribution of AA/AG genotype was significantly different between PR+ and PR- at XRCC1 rs25487(P=0.04,OR=0.29),while the distribution of AG/GG genotype was significantly different in Her-2+ cases and Her-2- (P=0.008,OR=0.45). Chi-square test found that the menarche age of GG/AG genotype in XRCC1 rs25487 and GG genotype in CCNH rs2234942 was significantly different in breast cancer and benign tumor (P= 0.001, 0.043,0.049). The disease onset age of GG genotype in both XRCC1 rs25487 and CCNH rs2234942 was significantly different in breast cancer and benign tumor(P=0.019,0.048). CONCLUSION: GG genotype in XRCC1 rs25487 increased the risk of breast cancer. AA/AG genotype in XRCC1 rs25487 with PR+ and AG/GG genotype in CCNH rs2234942 with Her-2+ reduced the risk of breast cancer.

Key words: RCC1, CCNH, SNPs, breast cancer