01-11-2005 | Adis Drug Profile
Docetaxel
In Hormone-Refractory Metastatic Prostate Cancer
Published in: Drugs | Issue 16/2005
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▴ The taxoid analogue docetaxel is a potent inhibitor of microtubular depolymerisation and, in hormonerefractory metastatic prostate cancer, it also counters the effects of the anti-apoptotic protein Bcl-2.
▴ Overall survival was significantly increased in patients with hormone-refractory metastatic prostate cancer receiving intravenous docetaxel every 3 weeks plus oral prednisone or estramustine, compared with patients receiving intravenous mitoxantrone every 3 weeks plus prednisone in two large phase III trials (TAX 327 and SWOG [Southwest Oncology Group] 9916).
▴ In the TAX 327 study, patients receiving docetaxel 75 mg/m2 every 3 weeks plus prednisone had a median overall survival duration of 18.9 months; in the SWOG 9916 study, median overall survival duration was 17.5 months with docetaxel 60 mg/m2 every 3 weeks plus estramustine 280mg three times daily on days 1–5. The median overall survival duration for the control arm of mitoxantrone 12 mg/ m2 every 3 weeks plus prednisone was 16–17 months.
▴ Compared with mitoxantrone plus prednisone, docetaxel plus prednisone improved prostate specific antigen response rate, pain and health-related quality of life, and docetaxel plus estramustine increased progression-free survival.
▴ Adverse events were more common with docetaxel-than mitoxantrone-based treatment regimens, but mst events associated with docetaxel were mild-to-moderate in severity.