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Combinaton of radiation and hormone suppression therapy shown to effectively treat early-stage prostate cancer

Results similar to success in treating advanced-stage cancers

BOSTON -- In the first study of its kind, researchers at Brigham and Women's Hospital (BWH) and Dana-Farber Cancer Institute (DFCI) have found that combined radiation therapy (RT) and androgen suppression therapy (AST) is a more effective treatment for localized, early-stage prostate cancer compared to treatment using radiation therapy alone. The findings are published in the September 13th issue of JAMA (Journal of the American Medical Association).

"Previous studies have shown a benefit to treating advanced-stage prostate cancer with radiation and hormone therapy," said Anthony V. D'Amico, MD, PhD, of BWH and DFCI. "This is the first study to show that the combination treatment may also benefit people with early-stage cancer."

Prostate cancer is the second leading cause of cancer death among men in this country. The American Cancer Society estimates that about 184,500 American men will be diagnosed with the disease this year and 39,200 will die.

In the study, researchers compared the relative risk of prostate specific antigen (PSA) failure during a five-year period in men who underwent RT and AST as treatment for diagnosed early-stage prostate cancer compared with men who received RT.

Although no significant difference between treatment groups was found in patients in the low-risk category, men who were classified in the intermediate-risk group and received both therapies for their cancer were five times less likely to have PSA failure than men who received RT alone. For men in the high-risk group who received both RT and AST, the effectiveness of combination therapy was more profound; they were two and one-half times less likely to have PSA failure than men who had received RT. "While further research is needed, it appears that the one-two punch of RT and AST may be a more effective treatment in the battle against both advanced-stage and early-stage prostate can
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Contact: Todd Ringler - DFCI
todd_ringler@dfci.harvard.edu
617-632-5357
Dana-Farber Cancer Institute
11-Sep-2000


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