RARRES2 and inflammatory bowel disease: The meta-analysis involving nine studies [21–26, 28–30] of 17 datasets showed that overall, patients with IBD had a higher blood level of chemerin as compared to healthy controls (SMD: 0.46, 95% CI: 0.46 to 0.76, p < 0.001; Fig. 2A) with moderate heterogeneity (p for Cochrane Q test = 0.02; I2 = 48%).