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NCI Dictionary of Cancer Terms

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gonadotropin-releasing hormone agonist  listen  (goh-NA-doh-TROH-pin-reh-LEE-sing HOR-mone A-guh-nist)

  A substance that keeps the testicles and ovaries from making sex hormones by blocking other hormones that are needed to make them. In men, gonadotropin-releasing hormone agonists cause the testicles to stop making testosterone. In women, they cause the ovaries to stop making estrogen and progesterone. Some gonadotropin-releasing hormone agonists are used to treat prostate cancer. Also called GnRH agonist, LH-RH agonist, and luteinizing hormone-releasing hormone agonist.