The genotype and allele frequencies of ten polymorphisms in the DNA repair pathways; XRCC1 rs25487, XPD rs13181, APE1 rs1130409, XRCC2 rs3218536, XRCC3 rs861539, hOGG1 rs1052133, XPG rs17655, hMSH2 rs4987188, RAD51 rs2619679, and RAD51 rs5030789 were determined in BC patients and controls (Table 4). Here, MSH2 is linked to breast cancer.