Of the 42 cytokines included in our analysis, only 15 were detectable in a consistent number of patients, and their differential levels confirmed that systemic cytokine levels are not effective for predicting or diagnosing IBD.18 Only the chemokines Regulated upon Activation, Normal T Cell Expressed and Presumably Secreted and IP-10 and the cytokine IFNα2 were significantly higher in concentration in patients with IBD, whereas the other cytokines detected were lower in concentration. Here, CXCL10 is linked to inflammatory bowel disease.