Abstract
Researchers have consistently linked some TCF7L2 gene variations, such as rs7903146, rs12255372, and rs11255372, to Type 2 diabetes mellitus (T2DM) in numerous populations and ethnic groups. The goal of this study is to show if the TCF7L2 variations rs4506565 T/A is linked to T2DM in Iraqi Arab patients. For this purpose, a case-control study was conducted with 100 T2DM patients and 100 controls. The Tetra-Primer ARMS-PCR Technique was used to genotype TCF7L2 rs4506565 T/A, making use of newly-designed primers. The study concluded that the TCF7L2 gene polymorphism rs4506565 T/A shows no significant difference in genotypes in any of the codominant, dominant, over dominant, recessive, and additive models. The dominant model has a significance with age but no significance with other parameters.