Objective: The objective of this study was to evaluate the efficacy and toxicity of docetaxel in combination with prednisolone in Japanese patients with hormone refractory prostate cancer.

Methods: Twenty patients with hormone refractory prostate cancer (HRPC) were administered a treatment regimen consisting of docetaxel 75 mg/m(2) once every 3 or 4 weeks and prednisolone 5 mg twice daily at our institution between 2006 and 2008.

Results: The patients received a median of 5.5 cycles of treatment (range, 2-12 cycles). Nine of the 20 patients (45%) had a >or=50% decrease in serum prostate-specific antigen (PSA). The median duration of response was 4 months (range, 1-11 months). The number of cycles performed, the presence of bone metastasis and the extent of disease had statistically significant associations with the response. Three patients had a transient PSA rise among the patients who ultimately had a response. Grade 3/4 leukopenia and neutropenia occurred in 80.0% and 85.0% of the patients, respectively. Interstitial pneumonia occurred in only one patient; however, the patient recovered. Finally, no treatment-related deaths were seen during the observation period.

Conclusions: The combination of docetaxel 75 mg/m(2) every 3 weeks and prednisolone 10 mg daily was effective and well tolerated in Japanese patients with HRPC. The results of this study suggest that a decision concerning discontinuation of this treatment should be carefully considered because a transient PSA rise was observed. Although interstitial pneumonia was rare, the potential risk of its development should be taken into consideration.

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http://dx.doi.org/10.1093/jjco/hyp126DOI Listing

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