CXCL6 and colon adenocarcinoma: However, differences in chemokine expression levels in patients with COAD, CXC1/2/17 (2.1%), CXCL3/16 (2.6%), CXCL5/14 (2.4%), CXCL6 (3%), CXCL8 (0.8%), CXCL11/13 (1.9%), and CXCL12 (0.6%), were found (Figure 5).