Another important point that needs to be mentioned is that pre-existing diabetes patients did not have higher A-FABP concentrations than non-diabetic patients (median 43.6 ng/ml in diabetes versus 40.9 ng/ml in non-diabetes, P = 0.74), and there was no significant association between body mass index (BMI) and A-FABP (rho = -0.02, P = 0.83; Table 3). Here, FABP4 is linked to diabetes mellitus.