Abstract
Objective
This study aimed to reveal the efficacy and safety profiles of 4-weekly cabazitaxel in patients with castration-resistant prostate cancer (CRPC).
Methods
The study included 62 Japanese patients who were treated for CRPC with ≥ 2 courses of cabazitaxel between 2014 and 2017. The oncological outcomes and adverse events were compared between 16 (25.8%) and 46 (74.2%) men who were treated with standard 3-weekly and alternative 4-weekly regimens, respectively.
Results
The prostate-specific antigen (PSA) response was comparable between the 3-weekly and 4-weekly regimens (median [interquartile range]: − 9.9% [− 64.5 to 13.0%] and − 30.7% [− 52.8 to 10.9%], P = 0.89), respectively. For patients on the 4-weekly regimen, the risks of progression (hazard ratio [HR], 95% confidence interval [CI] 1.27, 0.71–2.43, P = 0.44), treatment failure (HR, 95% CI 0.84, 0.48–1.55, P = 0.57) and any-cause mortality (HR, 95% CI 1.09, 0.58–2.17, P = 0.79) were comparable to those for patients on the 3-weekly regimen. The incidences of severe adverse events were also similar between the 3-weekly and 4-weekly regimens.
Conclusions
3-weekly and 4-weekly regimens of cabazitaxel showed similar efficacy and safety profiles in a real-world clinical setting. These data suggest that a 4-weekly regimen may be acceptable for selected patients.
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Acknowledgements
We would like to acknowledge the contributions of the following collaborators: Akito Yamaguchi (Harasanshin Hospital, Fukuoka), Takashi Dejima (Kyushu Central Hospital, Fukuoka), Satoshi Otsubo (Kitakyushu Municipal Medical Center, Kitakyushu), Akio Tsutsui (JCHO Kyushu Hospital, Kitakyushu), and Yoshifumi Hori (Miyazaki Prefectural Miyazaki Hospital, Miyazaki). We thank Anne M. O’Rourke, PhD, from Edanz Group (www.edanzediting.com/ac) for editing a draft of this manuscript.
Funding
This work was supported by JSPS KAKENHI Grant (17K11145).
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IRB approval from Kyushu University Hospital, National Hospital Organization Kyushu Cancer Center, Harasanshin Hospital, Oita Prefectural Hospital, National Hospital Organization Kyushu Medical Center, Kyushu Central Hospital, Kitakyushu Municipal Medical Center, Japanese Red Cross Fukuoka Hospital, JCHO Kyushu Hospital, and Miyazaki Prefectural Miyazaki Hospital.
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Shiota, M., Nakamura, M., Yokomizo, A. et al. Efficacy and safety of 4-weekly cabazitaxel for castration-resistant prostate cancer: a multi-institutional study. Cancer Chemother Pharmacol 84, 561–566 (2019). https://doi.org/10.1007/s00280-019-03874-7
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DOI: https://doi.org/10.1007/s00280-019-03874-7