TNFAIP3 and type 2 diabetes mellitus: Further we found that in the male patients with T2DM, serum A20 level was lower in low BMD group compared with the normal BMD group [36.53 (26.56, 59.32) vs 49.47 (39.12, 77.45) pg/mL, P=0.007] (Figure 2C), but no significant difference was shown in serum A20 level between the normal BMD group and low BMD group in females and the total population.