In the study by Cozzarini et al. [14], performed on human gastric biopsies, CHIT1 and AMCase gene expression levels were quantified in order to establish their functions in patients with gastritis associated or not with Helicobacter pylori (H. pylori) Notably, the correlation of mRNA expression level of CHIT1, but not AMCase, with H. pylori was significant. This evidence concerns the gene CHIT1 and gastritis.