RARRES2 and type 2 diabetes mellitus: In control patients, we found comparable significant positive correlations of chemerin with intra-operative glucose (r = 0.549, p = 0.023) (Additional file 3: Fig. S2) and fasting glucose levels (r = 0.516, p = 0.034) (Additional file 3: Fig. S2), while no significant correlations were found in patients with T2D (Additional file 4: Fig. S3).