NCI Drug Dictionary

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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.

iodine I 124 monoclonal antibody 8H9
A radioimmunoconjugate consisting of the iodine I 124-radiolabeled murine IgG1 monoclonal antibody (MoAb) 8H9 directed against the cell surface glycoprotein CD276 (4Ig-B7-H3) with potential for radioimaging using positron emission tomography (PET). Through convection enhanced delivery, iodine I 124 monoclonal antibody 8H9 binds to the 4Ig domain of CD276, in turn CD276 expressing tumor cells may be visualized upon PET imaging of the iodine I 124 moiety. CD276, a tumor associated antigen and member of the B7 family of co-stimulatory proteins, suppresses natural killer (NK) cell and cytotoxic T-lymhocyte activation; it is expressed on the cell membranes of a wide variety of tumors of neuroectodermal, mesenchymal and epithelial origin and its expression is associated with increased aggressiveness, poor prognosis and resistance. Check for active clinical trials using this agent.

Synonym:iodine I 124 MOAB 8H9