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Dictionary of Cancer Terms

View in Spanish: Cáncer de mama triple negativo

Triple-negative breast cancer (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 and ER-PR-HER2/neu-.

Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.