The function of CEACAM6 (CEA cell adhesion molecule 6, Ensembl gene identifier ENSG00000086548) is as follows. Cell surface glycoprotein that plays a role in cell adhesion and tumor progression (PubMed:10910050, PubMed:11590190, PubMed:1378450, PubMed:16204051, PubMed:2022629, PubMed:2803308, PubMed:8776764). Intercellular adhesion occurs in a calcium- and fibronectin-independent manner (PubMed:16204051, PubMed:2022629). Mediates homophilic and heterophilic cell adhesion with other carcinoembryonic antigen-related cell adhesion molecules, such as CEACAM5 and CEACAM8 (PubMed:11590190, PubMed:16204051, PubMed:2022629, PubMed:2803308, PubMed:8776764). Heterophilic interaction with CEACAM8 occurs in activated neutrophils (PubMed:8776764). Plays a role in neutrophil adhesion to cytokine-activated endothelial cells (PubMed:1378450). Plays a role in cell migration and cell adhesion to endothelial cells (PubMed:16204051). {ECO:0000269|PubMed:10910050, ECO:0000269|PubMed:11590190, ECO:0000269|PubMed:1378450, ECO:0000269|PubMed:16204051, ECO:0000269|PubMed:2022629, ECO:0000269|PubMed:2803308, ECO:0000269|PubMed:8776764}.