Single nucleotide polymorphism in DNA base excision repair genes XRCC1 and hOGG1 and the risk of endometrial carcinoma in the Polish population

Background : Polymorphisms in the human oxoguanine glycosylase 1 ( hOGG1 ) and X-ray repair cross-complementing 1 ( XRCC1 ) genes have been extensively studied in the association with various human cancers such as endometrial cancer.

Material and methods : The genotype analysis of hOGG1 Ser326Cys and XRCC1 Arg399Gln gene polymorphisms for 150 endometrial cancer patients and 150 controls of cancer-free subjects, in the Polish population, were performed using PCR-based restriction fragment length polymorphism (PCR-RFLP).

Results : Although there were no significant (p > 0.05) differences in the frequencies of genotypes or alleles of hOGG1 genes between patients and controls, the frequency of the XRCC1 399Gln allele was significantly greater in endometrial cancer patients compared with controls (p = 0.033) with an odds ratio of 1.39 (95% confidence interval 0.99 to 1.95). The distributions of genotypes and alleles of the genes hOGG1 and XRCC1 were not significantly associated with different grades of endometrial cancer (p > 0.05).

Conclusion : In conclusion, these findings indicated that XRCC1 Arg399Gln polymorphism may be a genetic determinant for developing endometrial cancer. The hOGG1 Ser326Cys may not play an important role in susceptibility to endometrial cancer in Polish women.