NCIt definition : A type 1 core O-glycan with potential immunotherapeutic property. Thomsen-Friedenreich
(TF) antigen, a galactose disaccharide, is normally O-linked to serine or threonine
residue of mucins (MUC1), a transmembrane glycoprotein overexpressed on epithelial
cell surface of a variety of tumor cells. The expression of this antigen is associated
with tumor cell adhesion, tissue invasion and aggressiveness. When administered in
a vaccine formulation, TF antigen may stimulate a cytotoxic T cell response against
tumors expressing TF epitope, which may result in a reduction in tumor size.;