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        International study into the use of intermittent hormone therapy in the treatment of carcinoma of the prostate : A meta-analysis of 1446 patients

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        geg_SHAW_bjui_meta_PRE_PRINT_2006.pdf (PDF, 224Kb)
        Author
        Shaw, Greg L.
        Wilson, Peter
        Cuzick, Jack
        Prowse, David M.
        Goldenberg, S. Larry
        Spry, Nigel A.
        Oliver, Tim
        Attention
        2299/16164
        Abstract
        OBJECTIVE: To review pooled phase II data to identify features of different regimens of intermittent hormone therapy (IHT), developed to reduce the morbidity of treating metastatic prostate cancer, and which carries a theoretical advantage of delaying the onset of androgen-independent prostate cancer, (AIPC) that are associated with success, highlighting features which require exploration with prospective trials to establish the best strategies for using this treatment. METHODS: Individual data were collated on 1446 patients with adequate information, from 10 phase II studies with >50 cases, identified through Pubmed. RESULTS: Univariate and multivariate Cox proportional hazard models were developed to predict treatment success with a high degree of statistical success. The prostate-specific antigen (PSA) nadir, the PSA threshold to restart treatment, and medication type and duration, were important predictors of outcome. CONCLUSIONS: The duration of biochemical remission after a period of HT is a durable early indicator of how rapidly AIPC and death will occur, and will make a useful endpoint in future trials to investigate the best ways to use IHT based on the important treatment cycling variables described above. Patients spent a mean of 39% of the time off treatment. The initial PSA level and PSA nadir allow the identification of patients with prostate cancer in whom it might be possible to avoid radical therapy.
        Publication date
        2007-05-01
        Published in
        BJU International
        Published version
        https://doi.org/10.1111/j.1464-410X.2007.06770.x
        Other links
        http://hdl.handle.net/2299/16164
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