Association study between polymorphisms of XRCC1, hOGG1 in DNA repair gene and the risk of endometrial carcinoma: a meta-analysis

Abstract Objective The association of DNA repair gene XRCC1, hOGG1 polymorphisms with susceptibility to endometrial carcinoma (EC) have been extensively studied with inconsistent results. The objective of this study was to clarify this issue by a comprehensive review and meta-analysis. Methods English (PubMed, Medline, Embase) and Chinese (CNKI, wanfang) electric databases were searched to collect a case-control study on the association between XRCC1 or hOGG1 gene polymorphisms and endometrial carcinoma. The retrieval time was from the database until may 1th, 2019. According to inclusion and exclusion criteria, relevant data of the final included literature were extracted and STATA 11.0 software was used for meta analysis. Results A total of 8 references meeting the inclusion criteria were included for analysis from the 243 retrieved literatures. The Arg399Gln polymorphism at the XRCC1 gene was associated with increased susceptibility to endometrial carcinoma (OR=1.36, 95%CI=1.23~1.51, P<0.001) in the overall population, the same results were shown in the subgroup analysis of Caucasians (OR=1.44, 95%CI=1.29~1.61, P<0.001). Ser326Cys polymorphism of the hOGG1 gene also increases the risk of endometrial carcinoma in Caucasians (OR=1.54, 95%CI=1.34~1.76, P=0.001). No publication bias was detected in this meta-analysis. Conclusions This meta-analysis provided evidence that the Arg399Gln polymorphism of DNA repair gene XRCC1 may increase risk of endometrial carcinoma, especially in the Caucasian. Moreover, Ser326Cys polymorphism of hOGG1 increase endometrial carcinoma risk in the Caucasian.