By regulating the expression of the pro-invasive molecule alanyl aminopeptidase (Anpep) on the surface of endothelial cells, hepatic invariant-NKT (iNKT)-derived IL-22 modulated endothelial cell permeability and favored the seeding of circulating cancer cells in the liver, promoting CRC liver metastases (144). This evidence concerns the gene ANPEP and cancer.