NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,777 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

Sylvant
(SIL-vant)
A drug used to treat a rare condition called Castleman disease in patients who do not have HIV or human herpesvirus 8. It is also being studied in the treatment of multiple myeloma. Sylvant binds to a protein called interleukin-6 (IL-6), which is made by some white blood cells and other cells in the body. Sylvant may help reduce inflammation and stop the growth of cancer cells or abnormal blood cells. It is a type of monoclonal antibody. Also called anti-IL-6 chimeric monoclonal antibody, cCLB8, CNTO 328, and siltuximab.