[Polymorphisms of DNA damage repair genes and male infertility: Advances in researches].

The deficiency of the DNA repair mechanism may increase DNA damage in germ cells, leading to abnormal spermatogenesis and infertility. High-fidelity DNA repair is essential for maintaining the integrity and quality of the germ cell genome. Therefore, the DNA damage repair system is a key factor in the sperm production process. Abnormal function of the genes involved in DNA damage repair of germ cells may reduce the number and induce the abnormalities of sperm. This article reviews the relationship of single nucleotide polymorphisms of the DNA damage repair genes XRCC1, OGG1, ERCC1 and ERCC2 with male infertility.