Journal
UROLOGIC ONCOLOGY-SEMINARS AND ORIGINAL INVESTIGATIONS
Volume 37, Issue 3, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.urolonc.2018.10.020
Keywords
Abiraterone; Cabazitaxel; Docetaxel; Enzalutamide; Testosterone
Categories
Funding
- JSPS KAKENHI [17K11145]
- Takeda Science Foundation
- Shin-Nihon Foundation of Advanced Medical Research
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Purpose: Currently, several therapeutic options for castration-resistant prostate cancer (CRPC) are available, for which predictive biomarkers have not been established. Therefore, we aimed to reveal the association between pretreatment serum testosterone level and antitumor outcomes when treated with androgen receptor axis-targeting agents and taxane chemotherapies for CRPC. Patients and methods: The present study included Japanese patients with metastatic prostate cancer whose serum testosterone levels during androgen-deprivation therapy were available. The antitumor outcomes when treated with enzalutamide, abiraterone, docetaxel, and cabazitaxel with clinicopathological parameters including serum testosterone levels during androgen-deprivation therapy, as well as prognoses including progression-free survival and overall survival, were examined. Results: Progression-free survival among men with higher serum testosterone level was superior to that among men with lower serum testosterone level when treated with enzalutamide. On the contrary, progression-free survival and overall survival among men with higher serum testosterone level were significantly inferior to those among men with lower serum testosterone level when treated with docetaxel and cabazitaxel, respectively. Conclusions: The present study indicated distinct prognostic values of serum testosterone level when treated with androgen receptor axis-targeting agent and taxane chemotherapy for CRPC, suggesting that serum testosterone level may be useful predictive biomarker to navigate the appropriate therapy in patients with CRPC. (C) 2018 Elsevier Inc. All rights reserved.
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