NCIt synonyms : Anti-glycoprotein A Repetitions Predominant Monoclonal Antibody DS-1055a;
NCIt definition : An afucosylated human monoclonal antibody directed against the transforming growth
factor beta (TGFbeta) activator glycoprotein A repetitions predominant (GARP; leucine-rich
repeat-containing protein 32; LRRC32), with potential immunomodulating and antineoplastic
activities. Upon administration, anti-GARP monoclonal antibody DS-1055a selectively
targets and binds to GARP and depletes GARP-positive regulatory T-cells (Tregs). This
leads to a reversal of immunosuppression mediated by GARP-positive Tregs and enhances
the immune response to tumor cells. GARP, a transmembrane protein highly expressed
on activated, immunosuppressive Tregs in the tumor microenvironment (TME), is essential
for the expression of TGFbeta on the cell surface of activated Tregs; it plays an
important role in regulation of the immune cell function and the immunosuppressive
nature of Tregs.;