IL37 and type 2 diabetes mellitus: As indicated by the AUC, ROC curve analysis demonstrated that IL‐39 (AUC = 0.973; 95% CI = 0.951–0.995; cut‐off value = 46 ng/L; YI = 0.87; sensitivity = 93.4%; specificity = 93.6%; p < .001) was more predictable for T2DM than IL‐37 (AUC = 0.582; 95% CI = 0.505–0.658; cut‐off value = 69 ng/L; YI = 0.87; sensitivity = 56.6%; specificity = 56.0%; p = .039) (Figure 2).