TAMs and TANs can be recruited into the tumor microenvironment by chemokines produced by cancer cells, such as the chemokines signaling axis CXCL1, CXCL2, CXCL5, CXCL8–CXCR2, and CXCR1 [59,60]. The gene discussed is CXCL2; the disease is neoplasm.