Although the tumor-specific expression of CXCR3 ligands, such as CXCL10, can induce tumor suppression by recruiting T- and NK-cells [43], many studies have shown that increased tumor cell expression of CXCR3 correlates with increased metastatic potential owing to an increased chemotactic response to ligands expressed by PMN cells [44–50]. This evidence concerns the gene CXCL10 and neoplasm.