KIFBP and diabetes mellitus: We found that the plasma level of KBP in the DM group (17.9 ± 13.8 μg/mL) was higher than that in the NDM group (6.4 ± 2.0 μg/mL), and the level in the DM w/DFU group (25.9 ± 14 μg/mL) was higher than that in the DM w/o DFU group (12.3 ± 10.6 μg/mL) (Fig. 1a).