With NGT and T2DM as dependent variables and the cytokines as independent variables IL-13 (OR = 4.8, 95% CI 2.7-11.7, p = 0.048) showed a strong and IL-12 showed a weak (OR = 1.9, 95% CI 1.5-2.7, p = 0.043) association with T2DM. This evidence concerns the gene IL13 and type 2 diabetes mellitus.