NCIt definition : An anti-carcinoembryonic antigen (CEA)/anti-CD3 bispecific monoclonal antibody with
potential antineoplastic activity. Cibisatamab contains two antigen-recognition sites:
one for human CD3, a T-cell surface antigen, and one for human CEA, a tumor-associated
antigen that is specifically expressed on certain tumor cells. Upon intravenous administration,
cibisatamab binds to both T-cells and CEA-expressing tumor cells, which cross-links
the T-cells with the tumor cells. This may result in a potent cytotoxic T-lymphocyte
(CTL) response against CEA-expressing tumor cells. CEA is overexpressed in many cancer
cell types.;