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Questions About Cancer? 1-800-4-CANCER

NCI Dictionary of Cancer Terms

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triple-negative breast cancer  listen  (TRIH-pul-NEH-guh-tiv brest KAN-ser)

  Describes breast cancer cells that do not have estrogen receptors, progesterone receptors, or large amounts of HER2/neu protein. Also called ER-negative PR-negative HER2/neu-negative breast cancer.