miRNA 196a2(rs11614913) & 146a(rs2910164) polymorphisms & breast cancer risk for women in an Iranian population

Aim: The purpose of our study was to analyze association of miRNAs 146aG/C(2910164) and 196a2C/T(11614913) polymorphism with breast cancer (BC) risk for women of Azeri ethnicity in Iran. Materials & methods: In the current case (n = 200)-control (n = 200) study, miRNAs 146aG/C(2910164) and 196a2C/T(11614913) were investigated for allelic and genotypic levels via the PCR-restriction fragment length polymorphism technique. Results: The statistical analysis showed a significant relation between CC genotype of rs11614913(196a2) (codominant, odds ratio (OR) = 0.58, p = 0.02236; recessive, OR = 2.92, p = 0.01695; overdominant, OR = 0.44, p = 0.0113) and BC susceptibility. The subgroup analysis of mentioned polymorphism declared the significant correlation (p <= 0.05) of the positive abortion, regular menstruation, positive human epidermal receptor-2 and positive estrogen receptor with BC susceptibility in CC genotype. Conclusion: The existence of a C-allele at miRNA 196a2(11614913) elevates women's BC susceptibility in Azeri ethnicity in Iran.