CXCR6 and hepatocellular carcinoma: In addition, CCR6/CCL20 interaction in endometrial adenocarcinoma, CXCR1/2/CXCL7 interaction in clear cell renal cell carcinoma, CXCR2/CXCL8 interaction in nasopharyngeal carcinoma, and CXCR6/CXCR16 interaction in HCC are reported to promote tumor cell growth [3, 27, 37, 265].