Background: Diabetic mellitus (DM) is a collection of metabolic disorder identified by hyperglycemia. The heterogeneous etiology includes defects either in insulin secretion, or in insulin action, or the both. In addition to the distraction in carbohydrate, fat and protein metabolism. Inflammatory reaction that caused by many pro-inflammatory cytokines play a central role in the pathogenicity of T2DM, these cytokines can enhance insulin resistance which led to impaired glucose homeostasis. Subjects: The study included 75 patients (38 males and 37 females) suffering from T2DM with age mean ± SE 52.30 ± 1.60, and 70 individuals as healthy controls (35 males and 35 females) with age mean ± SE 48.88 ± 0.64. Evaluation of immunological markers and genetic factors performed in both groups' subjects by using serum level (by using ELISA technique) and genotyping of cytokine (by using allele-specific PCR technique). The mean, standard error, and the probability calculated to determine the statistically significant differences in the parametric data. While Pearson's chi-square test and Fisher's exact probability were used to calculate the statistically significant differences of the non-parametric data. In addition, the odd ratio and Fishers' exact probability of the genotyping and allele frequency were calculated using the WinPepi program version 11.65. While, Hardy-Weinberg online calculator was used to calculate the probability of genotyping and allele frequency.
