Genetic polymorphisms in DNA repair genes XRCC1 and 3 are associated with increased risk of breast cancer in Bangladeshi population
Genetic polymorphisms in DNA repair genes XRCC1 and 3 are associated with increased risk of breast cancer in Bangladeshi population
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DOI：
10.1007/s10549-020-05738-8
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发表时间：
2020-06-19
影响因子：
3.8
通讯作者：
Rahman, Md. Mustafizur
中科院分区：
文献类型：
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作者：
Howlader, Nupur Rani;Rahman, Md. Mostafizur;Rahman, Md. Mustafizur
Background Genetic polymorphisms in DNA repair genes,XRCC1(Arg399Gln) andXRCC3(Thr241Met), may affect their DNA repair capacity leading to individual variation in breast cancer susceptibility among Bangladeshi females. Methods The case-control study comprised 121 breast cancer patients and 133 healthy controls. Genomic DNA isolated from peripheral blood was genotyped for target SNPs using PCR-RFLP method. Results ForXRCC1, heterozygous Arg/Gln and homozygous Gln/Gln genotypes showed 1.78-fold (95% CI 1.0084 to 3.1442,p = 0.0467) and 2.41-fold (95% CI 1.0354 to 5.5914,p = 0.0413) increased risk of breast cancer, respectively, when compared with Arg/Arg genotype. The presence of anyXRCC1Gln showed association with 1.93-fold increased risk. The variant Gln allele was associated with increased risk of breast cancer (95% CI 1.1885 to 2.6805,p = 0.0052). ForXRCC3, Thr/Met heterozygous and combined Thr/Met + Met/Met genotypes were associated with 1.85-fold (95% CI 1.0815 to 3.1834,p = 0.0248) and 1.89-fold (95% CI 1.1199 to 3.1908,p = 0.0171) higher risk, respectively, compared to Thr/Thr genotypes. The variant Met allele showed significant association with increased breast cancer susceptibility. Among cases genotype frequencies were significantly different in patients with age 55 or above, and with menopause and diabetes. Conclusion XRCC1(Arg399Gln) andXRCC3(Thr241Met) polymorphisms may be associated with increased breast cancer risk in Bangladeshi females.
