NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,811 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.

PTEN tyrosine phosphatase
(…TY-ruh-seen FOS-fuh-tays)
A protein that helps control many cell functions, including cell division and cell death. Mutations (changes) in the gene that makes PTEN tyrosine phosphatase are found in many types of cancer and other diseases. It is a type of tumor suppressor protein. Also called PTEN.