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NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,188 terms related to cancer and medicine.

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Cosmegen
(KOS-muh-jin)
A drug used to treat Ewing sarcoma, gestational trophoblastic tumor, Wilms tumor, and certain types of testicular cancer. It is also used to treat rhabdomyosarcoma in children. It is being studied in the treatment of other types of cancer. Cosmegen comes from the bacterium Streptomyces parvulus. It damages the cell’s DNA and may kill cancer cells. It is a type of anticancer antibiotic. Also called actinomycin D and dactinomycin.