ADAMTS13 and diabetes mellitus: Among all the demographic and clinical data, ADAMTS13 activity was positively correlated with triglyceride (r = 0.425, p < 0.001), HbA1c (r = 0.376, p < 0.001) and the presence of DM (rs = 0.258, p = 0.01), but negatively with HDL levels (r = − 0.229, p = 0.02) only.