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Item ASSOCIATION OF E-SELECTIN S128R POLYMORPHISM WITH HEREDITARY BREAST CARCINOMA SUSCEPTIBILITY IN TURKISH PATIENTS WITHOUT BRCA1/2 GERMLINE MUTATIONS(MACEDONIAN ACAD SCIENCES ARTS, 2018-01-01) Yararbas, K.; Atalay, P. B.Inherited genetic factors play an important role in breast cancer susceptibility. The BRCA1 and BRCA2 mutations are the most well-known genetic factors associated with increased risk of breast cancer. E-selectin is a cell surface glycoprotein and its serum levels are known to increase in various cancers. The present retrospective study aimed to evaluate whether E-selectin S128R polymorphism (NG\_012124.1: g.7161A>C, NM\_000450.2: c.445A>C, NP\_000441.2: p.Ser149Arg), which is known to have a role in cancer risk, is associated with breast cancer susceptibility in BRCA1/2 mutation non carriers with breast cancer. The study included 90 patients with breast cancer and 270 healthy controls. All breast cancer patients were screened for BRCA1/2 mutations and confirmed to be BRCA 1/2 mutation non carriers before inclusion in the study. Genotyping for the E-selectin S128R polymorphism was performed using real-time polymerase chain reaction (PCR) analysis. The frequencies of the AA, AC and CC genotypes were 70.0, 25.5 and 4.5\%, respectively, in the patient group and 79.25, 19.25 and 1.5\%, respectively, in the controls. The frequencies of A and C alleles were 84.8 and 15.2\% in the patient group, respectively, and 88.9 and 11.1\%. respectively, in the controls. No significant differences were determined in the genotype and allele frequencies of the E-selectin S128R polymorphism between the patient and control groups (p = 0.095). The S128R (A/C) polymorphism was not found to be associated with an increased risk of breast cancer {[}odds ratio (OR) = 0.69