KCNJ11 and type 2 diabetes mellitus: When assuming a variety of models to evaluate the association between KCNJ11 rs5219 polymorphism and T2DM risk, the recessive model (KK vs. EE + EK) was associated with the T2DM risk with an OR of 3.81 (95% CI 1.024–14.17, P = 0.035).