Impact of the duration of hormonal therapy following radiotherapy for localized prostate cancer

Okubo,Mitsuru; Nakayama,Hidetugu; Itonaga,Tomohiro; Tajima,Yu; Shiraishi,Sachika; Mikami,Ryuji; Sakurada,Akira; Sugahara,Shinji; Koizumi,Kiyoshi; Tokuuye,Koichi

doi:10.3892/ol.2015.3216

July-2015 Volume 10 Issue 1

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July-2015 Volume 10 Issue 1

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Article

Impact of the duration of hormonal therapy following radiotherapy for localized prostate cancer

Authors:
- Mitsuru Okubo
- Hidetugu Nakayama
- Tomohiro Itonaga
- Yu Tajima
- Sachika Shiraishi
- Ryuji Mikami
- Akira Sakurada
- Shinji Sugahara
- Kiyoshi Koizumi
- Koichi Tokuuye
View Affiliations / Copyright

Affiliations: Department of Radiology, Tokyo Medical University Hospital, Shinjuku‑ku, Tokyo 160‑0023, Japan
Pages: 255-259
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Published online on: May 18, 2015

https://doi.org/10.3892/ol.2015.3216
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Abstract

External-beam radiotherapy (EBRT) combined with androgen deprivation therapy (ADT) is known to provide improved survival outcomes compared with EBRT alone in the treatment of prostate cancer; however, the use of ADT has been reported to be associated with adverse events. Accordingly, the aim of the present study was to clarify the adequate duration of ADT when combined with EBRT to treat patients with high‑risk localized prostate cancer, with consideration of survival outcomes and toxicity. Between 2001 and 2011, 173 patients with high‑risk localized prostate cancer received ADT combined with EBRT, at a median dose of 69.6 Gy. Of these, 54 (31%) underwent short‑term ADT (<36 months) and 119 (69%) underwent long‑term ADT (≥36 months). During the median follow‑up period of 54 months, the five‑year progression‑free survival rate of patients receiving short‑term ADT (72.9%) was significantly lower than that of patients receiving long‑term ADT (92.8%) (P<0.01). Furthermore, the incidence of cardiovascular toxicity at grade II or above was significantly higher amongst patients treated with short‑term ADT compared with patients treated with long‑term ADT (P<0.01). Thus, the present study determined that ADT for ≥36 months combined with EBRT significantly improved the progression‑free survival of patients with high-risk localized prostate cancer and exhibited an acceptable toxicity profile.

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Journals

International Journal of Molecular Medicine

International Journal of Oncology

Molecular Medicine Reports

Oncology Reports

Experimental and Therapeutic Medicine

Oncology Letters

Biomedical Reports

Molecular and Clinical Oncology

World Academy of Sciences Journal

International Journal of Functional Nutrition

International Journal of Epigenetics

Medicine International

Impact of the duration of hormonal therapy following radiotherapy for localized prostate cancer

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