Immature pro-tumor CD56brightCD16low/neg NK cell recruitment occurs via increased expression of CXCL9, CXCL10, CXCL19, CXCL21, and CCL5, and reduced expression of CXCL2, CX3CL1, CXCL1, and CXCL8 (118). This evidence concerns the gene CXCL1 and neoplasm.