The funnel plots for the meta-analysis assessing the differences of blood chemerin between IBD patients and healthy controls, as well as between patients with active and non-active IBD are shown in Fig. 6A and B. Visual inspection of the plots revealed symmetry, indicating a low risk of publication bias, which was further corroborated by Egger’s regression analysis (p = 0.27 and 0.39, respectively). Here, RARRES2 is linked to inflammatory bowel disease.