BACKGROUND: We retrospectively investigated the efficacy and safety profile of weekly low-dose docetaxel (DTX) with estramustine in comparison with triweekly standard-dose DTX treatment for Japanese patients with castration-resistant prostate cancer (CRPC). METHODS: Between April 2002 and January 2011, 75 CRPC patients were treated with triweekly DTX (60-75 mg/m(2) every 3 weeks) (standard-dose group), and 76 CRPC patients were treated with weekly low-dose DTX (20-30 mg/m(2) on days 2 and 9 with estramustine 560 mg on days 1-3 and 8-10) every 3 weeks (low-dose group). Prostate-specific antigen (PSA) response and progression-free and overall survival were analyzed in each group. RESULTS: Median serum PSA level of the standard-dose group and low-dose group was 25.0 and 35.5 ng/ml, respectively. In the standard-dose and low-dose groups, 57.8 and 65.2 % of patients, respectively, achieved a PSA decline ≥ 50 %. There was no significant difference in either median time to progression between the standard-dose group (10.0 months) and low-dose group (7.1 months) or in median duration of survival between the standard-dose group (24.2 months) and low-dose group (30.6 months). Multivariate analysis with a Cox proportional hazards regression model showed that DTX treatment protocol did not influence the risk of death. Incidences of grade 3-4 neutropenia, febrile neutropenia, and thrombocytopenia were significantly higher in the standard-dose versus low-dose group (58.7 vs. 7.9 %, 16.0 vs. 3.9 %, and 8.0 vs. 0 %, respectively). CONCLUSION: For Japanese CRPC patients, weekly low-dose DTX combined with estramustine has similar efficacy to standard-dose DTX but with fewer adverse events.
BACKGROUND: We retrospectively investigated the efficacy and safety profile of weekly low-dose docetaxel (DTX) with estramustine in comparison with triweekly standard-dose DTX treatment for Japanese patients with castration-resistant prostate cancer (CRPC). METHODS: Between April 2002 and January 2011, 75 CRPC patients were treated with triweekly DTX (60-75 mg/m(2) every 3 weeks) (standard-dose group), and 76 CRPC patients were treated with weekly low-dose DTX (20-30 mg/m(2) on days 2 and 9 with estramustine 560 mg on days 1-3 and 8-10) every 3 weeks (low-dose group). Prostate-specific antigen (PSA) response and progression-free and overall survival were analyzed in each group. RESULTS: Median serum PSA level of the standard-dose group and low-dose group was 25.0 and 35.5 ng/ml, respectively. In the standard-dose and low-dose groups, 57.8 and 65.2 % of patients, respectively, achieved a PSA decline ≥ 50 %. There was no significant difference in either median time to progression between the standard-dose group (10.0 months) and low-dose group (7.1 months) or in median duration of survival between the standard-dose group (24.2 months) and low-dose group (30.6 months). Multivariate analysis with a Cox proportional hazards regression model showed that DTX treatment protocol did not influence the risk of death. Incidences of grade 3-4 neutropenia, febrile neutropenia, and thrombocytopenia were significantly higher in the standard-dose versus low-dose group (58.7 vs. 7.9 %, 16.0 vs. 3.9 %, and 8.0 vs. 0 %, respectively). CONCLUSION: For Japanese CRPC patients, weekly low-dose DTX combined with estramustine has similar efficacy to standard-dose DTX but with fewer adverse events.
Authors: Ian F Tannock; Ronald de Wit; William R Berry; Jozsef Horti; Anna Pluzanska; Kim N Chi; Stephane Oudard; Christine Théodore; Nicholas D James; Ingela Turesson; Mark A Rosenthal; Mario A Eisenberger Journal: N Engl J Med Date: 2004-10-07 Impact factor: 91.245
Authors: M A Eisenberger; B A Blumenstein; E D Crawford; G Miller; D G McLeod; P J Loehrer; G Wilding; K Sears; D J Culkin; I M Thompson; A J Bueschen; B A Lowe Journal: N Engl J Med Date: 1998-10-08 Impact factor: 91.245
Authors: Howard I Scher; Susan Halabi; Ian Tannock; Michael Morris; Cora N Sternberg; Michael A Carducci; Mario A Eisenberger; Celestia Higano; Glenn J Bubley; Robert Dreicer; Daniel Petrylak; Philip Kantoff; Ethan Basch; William Kevin Kelly; William D Figg; Eric J Small; Tomasz M Beer; George Wilding; Alison Martin; Maha Hussain Journal: J Clin Oncol Date: 2008-03-01 Impact factor: 44.544
Authors: Dominik R Berthold; Gregory R Pond; Freidele Soban; Ronald de Wit; Mario Eisenberger; Ian F Tannock Journal: J Clin Oncol Date: 2008-01-10 Impact factor: 44.544