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Radio immunotherapy (RIT) utilizes an antibody labeled with a radionuclide to deliver cytotoxic radiation to a target cell. In cancer therapy, an antibody with specificity for a tumor-associated antigen is used to deliver a lethal dose of radiation to the tumor cells. The ability for the antibody to specifically bind to a tumor-associated antigen increases the dose delivered to the tumor cells while decreasing the dose to normal tissues. By its nature, RIT requires a tumor cell to express an antigen that is unique to the neoplasm or is not accessible in normal cells.
Additional recommended knowledge
History of available agents
These medications were the first agents of what is known as radioimmunotherapy, and they were approved for the treatment of refractory non-Hodgkins lymphoma. This means they are used in patients whose lymphoma is refractory to conventional chemotherapy and the monoclonal antibody rituximab.
Other applications (non-approved indications)
Other types of cancer for which RIT has therapeutic potential include prostate cancer , metastatic melanoma , ovarian cancer , neoplastic meningitis  , leukemia , high-grade brain glioma , and metastatic colorectal cancer .
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Radioimmunotherapy". A list of authors is available in Wikipedia.|