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.

anti-thymocyte globulin
A purified gamma immunoglobulin (IgG) with immunosuppressive activity. Obtained from rabbits that have been immunized with human thymocytes, antithymocyte globulin specifically recognizes and destroys T lymphocytes. Although the exact mechanism of action is not completely understood, it appears to involve T lymphocyte clearance from the circulation and modulation of T lymphocyte activity. Administering antithymocyte globulin with chemotherapy prior to stem cell transplantation may reduce the risk of graft-versus-host disease. Check for active clinical trials using this agent. (NCI Thesaurus)
Synonym:lymphocyte immune globulin
US brand names:ATGAM
Thymoglobulin
Abbreviation:ATG