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NCI Dictionary of Cancer Terms


Ontak  listen  (ON-tak)

  A drug used to treat cutaneous T-cell lymphoma that can bind the cytokine IL-2 and that has not responded to other treatment. It is also being studied in the treatment of other types of cancer. Ontak is made by combining a part of IL-2 with a bacterial toxin. The IL-2 part of the drug attaches to the cancer cells and then the toxin kills the cells. Ontak is a type of immunotoxin and a type of fusion toxin. Also called denileukin diftitox.

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