Evaluation of IL-17A rs2275 913 G>A and IL- 17F rs 763780 T>C genes polymorphism in women with breast cancer

Breast cancer is the most common cancer among women around the world, in which mostly is seen in women over 50 years old age. IL-17 which has the main role in responding to inflammation plays role in the early stages of tumorigenic and primary tumor formation. Epidemiological studies have shown that IL-17 is associated with the risk of cancer. This study aimed to investigatory the relationship between single-nucleotide polymorphisms (SNPs) in the IL-17-A rs2275913 G>A and IL-17 F rs763780 T>C genes in women with breast cancer this study.

In this research 50 patients and 50 healthy samples were studied as a control group. After genomic DNA extraction, genotype determination of rs2275913 and     rs763780 polymorphisms was performed by Tetra- ARMS-PCR method and finally the results statistically were analyzed.

In the current research GG, AG and AA genotype frequencies of IL-17A gene in patient and normal samples were [12(24%), 23(46%),15(30%)]  and [21(42%), 27(54%), 2(4%)] respectively, (GA vs GG/AA, OR= 1.49, 95% CI: 0.61-3.67, AA vs GG/GA, OR= 13.12, 95% CI: 2.55-67.46). Also the frequency of an allele in patient and normal population was detected 53% and 31% respectively. IL-17A-197A allele in comparison with G significantly increased risk of breast cancer (OR= 2.510, 95% CI: 1.408-4.473). No significant difference was observed between IL-17 F 7488 T>C gene’s polymorphism and breast cancer’s incidence (OR= 1/000, 95% CI: 0.24-4.24).

The results indicated that IL-17A rs2275913G>A polymorphism was associated with breast cancer in women, which could be effective in the treatment and clinical management of this disease. In contrast, IL-17F rs763780T>C polymorphism did not showed significant association with the susceptibility of breast cancer.