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Renal Capsule Xenografting and Subcutaneous Pellet Implantation for the Evaluation of Prostate Carcinogenesis and Benign Prostatic Hyperplasia
Published on: August 28, 2013
Hormone therapy for patients with prostate carcinoma
1University of Toronto, Sunnybrook Health Science Center, Ontario, Canada.
Androgen ablation therapy improves survival for advanced prostate cancer but has significant quality of life impacts. Intermittent therapy may mitigate side effects, but better treatments for hormone-refractory disease are needed.
Area of Science:
- Oncology
- Urology
Background:
- Androgen ablation therapy for prostate carcinoma has a 60-year history, yet its optimal use remains controversial.
- Monitoring prostate-specific antigen (PSA) levels has shifted treatment initiation, impacting patient populations and treatment concepts.
- Rising PSA levels after local therapy indicate recurrent disease with a longer life expectancy, increasing the importance of treatment side effects and quality of life.
Purpose of the Study:
- To critically review the literature on androgen ablation therapy for prostate carcinoma.
- To emphasize the impact of treatment on quality of life and incorporate recent publications.
- To address controversies regarding the timing, intermittent use, and total blockade of androgen ablation therapy.
Main Methods:
- A critical literature review was performed.
- Emphasis was placed on quality of life and recent publications.
Main Results:
- Early androgen ablation is supported for locally advanced or lymph node-positive prostate carcinoma.
- No specific PSA trigger point or doubling time is established for initiating therapy post-local treatment failure.
- Total androgen blockade offers a modest survival benefit (3% absolute 5-year improvement), with intermittent therapy improving quality of life during off-treatment intervals.
Conclusions:
- Androgen ablation therapy is effective for advanced prostate carcinoma but not curative and impacts quality of life, especially with prolonged use.
- Intermittent androgen ablation therapy may reduce adverse quality of life impacts, though long-term survival effects are under investigation.
- Developing strategies to prevent hormone-refractory prostate carcinoma and improve treatments for this advanced stage remains a critical challenge.
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