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  • Title: Is it reasonable to consider second-line chemotherapy in patients with hormone-refractory prostate cancer?
    Author: Odrazka K, Vaculikova M, Dolezel M, Petera J, Moravek P, Prosvic P, Zoul Z, Vosmik M, Dolezal J, Simakova E.
    Journal: Oncol Rep; 2005 Oct; 14(4):1077-81. PubMed ID: 16142375.
    Abstract:
    At present, no consensus exists regarding the use of second-line chemotherapy in patients with hormone-refractory prostate cancer (HRPC). A total of 23 patients with evidence of disease progression during or after first-line chemotherapy (epirubicin, etoposide, and dexamethasone) were included in this study. Two second-line treatments were administered throughout the study period (2000-2004) with 15/23 patients receiving carboplatin AUC 3 on day 1 and vinblastine 5 mg/m2 on day 1 of a 21-day cycle and 8/23 patients treated with docetaxel 50 mg/m2 on day 1 of a 21-day cycle. The latter regimen has been used since 2003. The prostate-specific antigen (PSA) level decreased by > or =50% in 3 of 23 patients, corresponding to an overall PSA response rate of 13% (95% confidence interval, 3-34%). The median time to biochemical progression was 9, 24 and 33 weeks, respectively. The median overall survival was 39 weeks (range, 15-73 weeks) with no difference between the two chemotherapy groups (p=0.08). A significant reduction of analgesic use was observed in 2 of 10 patients (20%) who required analgesics for cancer pain upon study entry. The major toxicity was grade 3 thrombocytopenia in 2 of 23 patients (9%). Both second-line treatments, a combination of carboplatin and vinblastine and a monotherapy with docetaxel, showed modest activity at subtoxic doses in patients with HRPC.
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