NCI Drug Dictionary

The NCI Drug Dictionary contains technical definitions and synonyms for drugs/agents used to treat patients with cancer or conditions related to cancer. Each drug entry includes links to check for clinical trials listed in NCI's List of Cancer Clinical Trials.

anti-CD20-CAR-CD3zeta-4-1BB-expressing autologous T lymphocytes
A preparation of autologous blood T-lymphocytes that have been genetically modified to express a chimeric antigen receptor (CAR) consisting of an anti-CD20 scFv (single chain variable fragment); the cytoplasmic portion of the human TCR-[zeta] molecule; and the co-stimulatory molecule 4-1BB (CD137), with potential immunostimulating and antineoplastic activities. Upon transfusion, anti-CD20-CAR-CD3zeta-4-1BB-expressing autologous T-lymphocyte cells direct T-cells to CD20-expressing tumor cells. This results in cytotoxic T lymphocyte (CTL) and antibody responses against CD20-expressing tumor cells, causing tumor cell lysis. The CD20 antigen, a non-glycosylated cell surface phosphoprotein, is a B-cell specific cell surface antigen expressed in B-cell lineage malignancies. CD3 zeta is one of several membrane-bound polypeptides found in the T-cell receptor (TCR)/CD3 complex and regulates the assembly of complete TCR complexes and their expression on the cell surface. The 4-1BB co-stimulatory molecule signaling domain enhances activation and signaling after recognition of CD20; the inclusion of this signaling domain may increase the antitumor activity compared to the inclusion of the CD3-zeta chain alone.