Spearman’s partial correlation analysis revealed a significant positive correlation between IL-10 levels and the sulcus depth of left transverse frontopolar gyri and sulci (R = 0.636, P = 0.011), a significant positive correlation between the sulcus depth of the right pole- occipital and the digit span test-forward (R = 0.762, P < 0.001), and a significant negative correlation between the gyrification index of the left inferior part of the precentral sulcus and the digit span test-backward (R = –0.710, P = 0.003) among T2DM participants (Figure 3). Here, IL10 is linked to type 2 diabetes mellitus.