The CD168 antigen is a non-integral cell surface hyaluronan receptor and intracellular protein. When hyaluronan binds to CD168, the phosphorylation of a number of proteins, including the focal adhesion kinase occurs. CD168 activation regulates various cellular processes including cell migration, proliferation, signaling, regulation of gene expression, cell differentiation, morphogenesis, and metastasis via both extracellular and intracellular pathways. CD168 is involved in cellular transform