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Dictionary of Cancer Terms

View in Spanish: In 111 ibritumomab tiuxetán

In 111 ibritumomab tiuxetan ( ih-brih-TOO-moh-mab ty-oo-EKS-eh-tan)
A radiolabeled monoclonal antibody that is used to detect certain types of B-cell non-Hodgkin lymphoma and is being studied in the detection of other types of B-cell tumors. It is made up of the monoclonal antibody ibritumomab plus the radioisotope indium 111. It binds to the protein called CD20, which is found on B cells. A machine is used to detect which cells in the body have bound the antibody. In 111 ibritumomab tiuxetan is a type of radiopharmaceutical. Also called In 111 Zevalin and indium In 111 ibritumomab tiuxetan.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.