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-CD70 antibody-drug conjugate MDX-1203
An antibody-drug conjugate (ADC) containing a fully human monoclonal antibody, directed against the extracellular domain of the human CD70 molecule, conjugated to a prodrug of a CC-1065 (rachelmycin) analogue via a stable peptide-based linker, with potential antineoplastic activity. The anti-CD70 antibody moiety of the anti-CD70 antibody-drug conjugate MDX-1203 selectively binds to the extracellular domain of CD70 on tumor cell surfaces. Upon internalization, the prodrug moiety is released and activated and binds to double-stranded B-DNA within the minor groove, thereby alkylating the –3 position of adenine, which may result in the inhibition of cellular proliferation of tumor cells that overexpress CD70. CD70, the ligand for the costimulatory receptor CD27 and a member of the tumor necrosis factor (TNF) family, is found on the surfaces of various types of cancer cells. The antitumor antibiotic CC-1065, a DNA minor-groove-binding alkylating agent, was originally isolated from the bacterium Streptomyces zelensis. Check for active clinical trials using this agent. (NCI Thesaurus)

Abbreviation:anti-CD70 ADC MDX-1203
Code name:MDX-1203