Serum hepcidin significantly increased in the pediatric IBD patients when compared to the controls, while no differences were found in the ferritin levels between these two cohorts in the study by Moran-Lev et al. These data could be in line with those reported by Martinelli et al. considering the increased value of CRP and IL-6 and the decreased hemoglobin value, but some additional data about disease activity would help to better compare the results of these two studies [20]. The gene discussed is CRP; the disease is inflammatory bowel disease.