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Int J Radiat Oncol Biol Phys. 2006 Oct 1;66(2):395-402. Epub 2006 Aug 14.

Survival benefit associated with adjuvant androgen deprivation therapy combined with radiotherapy for high- and low-risk patients with nonmetastatic prostate cancer.

Author information

  • 1Fred Hutchinson Cancer Research Center, Health Services Department, University of Washington School of Public Health and Community Medicine, Seattle, WA 98109-1024, USA. szeliadt@fhcrc.org

Abstract

BACKGROUND:

The use of adjuvant androgen deprivation therapy (ADT) combined with radiotherapy has become common in low-risk patients, although clinical trials have focused primarily on high-risk patients. This study examines the effectiveness of adjuvant ADT combined with radiotherapy for a wide range of patients treated in the 1990s.

METHODS AND MATERIALS:

Prostate cancer survival was examined in a population based cohort of 31,643 patients aged 65 to 85 years who were diagnosed with nonmetastatic prostate cancer and treated with external beam radiotherapy and/or brachytherapy. Instrumental variable analysis methods were used to control for selection bias.

RESULTS:

Patients with stage T3/T4 disease who received adjuvant ADT experienced improved 5-year and 8-year survival. No survival advantage was observed for men with T1/T2 disease during this interval.

CONCLUSION:

High-risk patients who receive primary radiotherapy have benefited from adjuvant ADT, whereas low-risk patients with disease confined to the prostate have not yet benefited from adjuvant therapy within the first 8 years after treatment. These findings are consistent with practice guidelines, which recommend adjuvant ADT for patients with high-risk disease.

PMID:
16904843
[PubMed - indexed for MEDLINE]
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