Journal
BREAST
Volume 45, Issue -, Pages 22-28Publisher
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.breast.2019.02.002
Keywords
Metastatic breast cancer; Docetaxel; Antiangiogenic agents; Sorafenib
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Funding
- University Hospital Heidelberg, Medical faculty, Heidelberg, Germany
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Background: This multicenter, double-blind phase II study assessed the antitumor activity and toxicity profile of docetaxel with the antiangiogenic multikinase inhibitor sorafenib or matching placebo as a first-line treatment in patients with metastatic or locally advanced HER2-negative breast cancer. Patients and methods: Patients were randomized 1:1 to receive docetaxel 100 mg/m(2) on day 1 every 3 weeks in combination with sorafenib 400 mg bid or placebo on days 2-18 of each cycle until tumor progression, or unacceptable toxicity. Sorafenib/placebo could be continued at the investigator's discretion if docetaxel was stopped due to toxicity. Primary endpoint was progression free survival (PFS). Results: From October 2008 to December 2013, 102 patients were randomized; 98 patients were evaluable. The trial was prematurely terminated due to slow accrual. Due to increased toxicity the dose of docetaxel was reduced to 75 mg/m(2) and an increasing sorafenib dosing schedule was implemented as part of a protocol amendment. The addition of sorafenib to docetaxel did not improve PFS (8.2 vs. 7.3 months for docetaxel/placebo; HR 0.84, log rank p = 0.43), but led to higher rates of early treatment discontinuation. There were no statistically significant differences between sorafenib dosing schedules. Conclusions: Addition of sorafenib to taxane-based first-line chemotherapy in patients with metastatic breast cancer failed to improve PFS and resulted in increased toxicity. (C) 2019 Elsevier Ltd. All rights reserved.
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