Indeed, measurement of serum hepcidin is a useful complementary therapeutic tool for screening IBD‐related anemia, as there is a strong relationship between hepcidin and iron absorption (Ganz & Nemeth, 2012), such that anemia is a poor prognostic factor and diminishes patients' long‐term quality of life (Bailey et al., 2012). This evidence concerns the gene HAMP and anemia (phenotype).