Association of XRCC3, XRCC4, BAX, and BCL-2 Polymorphisms with the Risk of Breast Cancer

Emre Ozoran; Fadime Didem Can Trabulus; Duygu Erhan; Bahadir Batar; Mehmet Guven

doi:10.1155/2022/5817841

Association of XRCC3, XRCC4, BAX, and BCL-2 Polymorphisms with the Risk of Breast Cancer

Int J Breast Cancer. 2022 Mar 14:2022:5817841. doi: 10.1155/2022/5817841. eCollection 2022.

Authors

Emre Ozoran¹, Fadime Didem Can Trabulus², Duygu Erhan³, Bahadir Batar⁴, Mehmet Guven³

Affiliations

¹ Department of General Surgery, School of Medicine, Koc University, Istanbul, Turkey.
² Department of General Surgery, Bahcesehir University Faculty of Medicine, Istanbul, Turkey.
³ Department of Medical Biology, Cerrahpasa School of Medicine, Istanbul University Cerrahpasa, Istanbul, Turkey.
⁴ Department of Medical Biology, Tekirdag Namik Kemal University School of Medicine, Tekirdag, Turkey.

Abstract

Background: Breast cancer is the most common malignancy in women. Genetic risk factors associated with breast cancer incidence have been identified.

Aims: This study is aimed at determining the association of XRCC3 Thr241Met (rs861539), XRCC4 G(-1394) T (rs6869366) DNA repair and BAX G(-248) A (rs4645878), and BCL2 C(-938) A (rs2279115) apoptotic gene polymorphisms with breast cancer.

Materials and methods: Genetic analysis was performed using peripheral blood samples. Gene polymorphisms were detected by using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique. 175 patients and 158 healthy controls were enrolled in the study.

Results: Breast cancer risk was 5.43 times more in individuals with AA genotype of Bax G(-248) A (rs4645878) (P = 0.002). The risk of metastasis was 11 times with this genotype. It was associated with 6 times more risk of having a tumor larger than 2 cm. The risk of breast cancer was 2.77 times more in individuals carrying the Met/Met genotype of XRCC3 Thr241Met (rs861539) (P = 0.009). The risk of having advanced clinical stage (stage III+IV) with the Met/Met genotype was 4 times more increased. No relationship with breast cancer was found with XRCC4 G(-1394) T (rs6869366) and BCL2 C(-938) A (rs2279115) gene polymorphisms.

Conclusion: Multicenter trials using subjects with genetic variations are needed to establish the relationship between breast cancer and single gene polymorphism.