As a recent study of hepatocellular carcinoma reported, CAF-derived cardiotrophin-like cytokine factor 1 (CLCF1) induces the polarization of N2-phenotype neutrophils by upregulating CXCL6 and TGF-β expression in tumor cells, thereby facilitating tumor progression [150]. This evidence concerns the gene CXCL6 and neoplasm.