In ovarian cancer, synergistic effect of tumor‐associated IL‐17 and Th17 cells 66, as well as IL‐18‐primed “helper” NK cells 67, induced the production of endogenous CXCL9 and CXCL10 that were directly correlated with tumor‐infiltrating CD8+ T cells. This evidence concerns the gene CXCL9 and neoplasm.