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If initial PSA > 20 ng/ml, longer ADT improves progression


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Can J Urol. 2007 Aug;14(4):3621-7.

What is the optimal duration of androgen deprivation therapy in prostate cancer patients presenting with prostate-specific antigen levels > 20 ng/ml?

Berthelet E, Pickles T, Truong PT, Liu M, Pai HH, Kwan WB, Lim JT; Members of the Prostrate Cancer Outcomes Initiative.

Vancouver Island Centre, BC Cancer Agency, University of British Columbia, British Columbia, Canada.


PURPOSE: To evaluate the optimal duration of androgen deprivation therapy (ADT) in patients with prostate cancer treated with external beam radiotherapy (EBRT), who present with PSA levels > 20 ng/mL.

METHODS AND MATERIALS: A total of 307 patients presenting with a PSA > 20 ng/ml were treated with EBRT and ADT. The cohort was divided into four groups according to the duration of ADT: Group 1 received < 6 months (n = 71), group 2 received 6-12 months (n = 80), group 3 received 12-24 months (n = 72), and group 4 received > 24 months (n = 84) of ADT. The endpoints analyzed were biochemical control (bNED), overall survival (OS) and cause-specific survival (CSS). Statistical analysis was conducted using Kaplan-Meier estimates and Cox regression models.

RESULTS: Compared to patients who received < 6 months of ADT, patients treated with 12-24 months or > 24 months of ADT experienced significantly improved bNED (p = 0.01 and p < 0.0001, respectively). Cause-specific survival with ADT durations 12-24 and > 24 months were significantly higher compared to < 6 months (p < 0.007 and 0.024, respectively). Overall survival with ADT durations > 24 months was also significantly higher compared to < 6 months (p = 0.0025).

CONCLUSIONS: The present analysis supports the hypothesis that longer durations of ADT improves bNED, CSS and OS in patients presenting with a PSA > 20 ng/ml.

PMID: 17784982 Forum: Primary hormone therapy Title: If initial PSA > 20 ng/ml, longer ADT improves progression free and overall survival

This extract can be found on http://PubMed.com, and is in the public domain.

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