Abstract—
Aim: Breast cancer is the most common cancer in women both in the developed and less developed world. The reported study was designed to explore associations between hMSH2 – Gly322Asp (1032G>A, rs4987188) single nucleotide polymorphism (SNP) and the risk of breast carcinoma in the Polish women.
Material and methods: Blood samples were obtained from women with breast cancer (n=225), treated at the Department of Oncological Surgery and Breast Diseases, Polish Mother’s Memorial Hospital – Research Institute between the years 2005 and 2012. A control group included 220 cancer-free women. Genomic DNA was isolated and the SNP Gly322Asp of hMSH2 was determined by High-Resolution Melter method. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated for each genotype and allele.
Results: This study revealed that single nucleotide polymorphism Gly322Asp of hMSH2 is associated with both breast cancer risk and grading. Moreover, it can be linked with breast carcinoma tumor size and lymph node status. The Asp allele in patients may be a risk factor for breast carcinoma (OR 5.12; 95% CI 3.77 –6.97, p<.0001).
Conclusions: Gly322Asp single nucleotide polymorphism of hMSH2 may be a risk factor of breast cancer in the Polish women.
Keywords— breast cancer, single nucleotide polymorphism, hMSH2, mismatch repair genes.
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