Abstract
<b>Background and Objective:</b> The association of rs7903146 polymorphism of TCF7L2 gene with Type 2 diabetes mellitus found almost in all ethnic groups. Therefore, the current study focused on estimating this association in the Azerbaijan population for the 1st time. <b>Materials and Methods:</b> A study was conducted on 110 patients with Type 2 diabetes mellitus and 115 healthy controls. The biochemical parameters were analyzed and calculated with an independent t-test and Fisher exact test. DNA extracted from the blood samples run in PCR. PCR was used to detect the presence of TCF7L2 rs7903146 C/T polymorphism and the products of the PCR were visualized in a 1.5% gel electrophoresis. <b>Results:</b> According to the obtained data, T allele and TT genotype of rs7903146 polymorphism strongly correlated with the risk for Type 2 diabetes (odds ratio of 1.68 for T allele and p = 0.007, odds ratio of 3.9 for TT genotype, p = 0.0028). These results were adjusted by applying the recessive model (p = 0.003). Moreover, the biochemical parameters also show a significant difference in the fasting glucose level (p = 0.0001), fasting insulin (p = 0.0001), BMI (p = 0.0002) and age (p = 0.015) inpatient and control groups. <b>Conclusion:</b> Based on the results, the TCF7L2 rs7903146 (C>T) polymorphism is the genetic risk factor related to Type 2 diabetes in the Azerbaijan population.
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