Effect of dutasteride on castration‑resistant prostate cancer

  • Authors:
    • Takeshi Azuma
    • Yukihide Matayoshi
    • Yujiro Sato
    • Yasuhi Nagase
  • View Affiliations

  • Published online on: November 2, 2017     https://doi.org/10.3892/mco.2017.1480
  • Pages:133-136
Metrics: HTML 0 views | PDF 0 views
0

Abstract

It has previously been demonstrated that the intratumoral generation of the potent androgen dihydro­testosterone (DHT), contributes critically to the progression of prostate cancer and its castration‑resistant form, castration‑resistant prostate cancer (CRPC). Circulating testosterone is converted into DHT by 5α‑reductase (SRD5A). Dutasteride is a dual inhibitor of type I and II SRD5A. The present study assessed the effectiveness of dutasteride in the treatment of CRPC. Between 2010 and 2013, CRPC was diagnosed in 41 patients at the Tokyo Metropolitan Tama Medical Center. Following diagnosis, the patients received 0.5 mg dutasteride daily. The patients' median age was 77.3 years (range, 63‑90). Bone metastases were recognized in 12 patients. All the patients received dexamethasone. Twenty-four (59%) patients had previously undergone chemotherapy, while 11 (27%) received docetaxel, and 24 (59%) estramustine. The prostatic‑specific antigen (PSA) level declined in 17 (41%) patients from the baseline value, following dutasteride treatment. The median value for the PSA decrease was 23% (range, 4.3‑89.8%), and the median duration of the response was 4 months (range, 1‑10). The PSA response rate (defined as >50% decline in PSA from the baseline value) was recognized in 7 (17%) patients. The median duration of the response was 3 months (range, 2‑10). Dutasteride was efficacious against CRPC in certain patients and may be a promising option in CRPC treatment. A prospective randomized trial is necessary to verify the efficacy of dutasteride.

Related Articles

Journal Cover

January 2018
Volume 8 Issue 1

Print ISSN: 2049-9450
Online ISSN:2049-9469

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
APA
Azuma, T., Matayoshi, Y., Sato, Y., & Nagase, Y. (2018). Effect of dutasteride on castration‑resistant prostate cancer. Molecular and Clinical Oncology, 8, 133-136. https://doi.org/10.3892/mco.2017.1480
MLA
Azuma, T., Matayoshi, Y., Sato, Y., Nagase, Y."Effect of dutasteride on castration‑resistant prostate cancer". Molecular and Clinical Oncology 8.1 (2018): 133-136.
Chicago
Azuma, T., Matayoshi, Y., Sato, Y., Nagase, Y."Effect of dutasteride on castration‑resistant prostate cancer". Molecular and Clinical Oncology 8, no. 1 (2018): 133-136. https://doi.org/10.3892/mco.2017.1480