IL6 and diabetes mellitus: Moreover, the ROC curve of the model, combining age, diabetes mellitus, CD3+ T cell count reduction, and IL–6 elevation, had a larger AUC (0.887 [95% CI 0.837–0.937; P < 0.001) with the cutoff value of 0.309 (sensitivity 77.4%, specificity 85.7%) (Table 5, Fig. 2).