Conversely, the overexpression in CCA tumor cells of CXCL9, a ligand of C-X-C motif chemokine receptor (CXCR) 3, induces the recruitment of NK cells[52] that infiltrate the tumor and positively correlated with postoperative overall survival in a cohort of 70 patients[53]. This evidence concerns the gene CXCL9 and neoplasm.