Prevotella has already been associated with increasedproduction of IL-17 in the mucosal cells of patients with CRC (20,21).Acidaminobacter was also found to be over-represented in CRCstool samples (22).Ruminococcus genera are related to the fermentation of complexcarbohydrates and producers of short-chain fatty acids. The gene discussed is IL17A; the disease is colorectal carcinoma.