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Clinical Trial, Phase II
Journal Article
Multicenter Study
Research Support, Non-U.S. Gov't
A phase II study of gemcitabine plus paclitaxel in patients with metastatic breast cancer and prior anthracycline treatment.
Asia-Pacific Journal of Clinical Oncology 2010 December
AIM: To investigate the efficacy and safety of gemcitabine-paclitaxel in Chinese patients with metastatic breast cancer following anthracycline failure in a multicenter, open-label, single-arm, phase II clinical trial.
METHODS: Chinese female patients with unresectable, locally recurrent or metastatic breast cancer who had relapsed after neo-adjuvant anthracycline-based chemotherapy were included. All patients had measurable disease and an Eastern Cooperative Oncology Group performance status of 0 or 1 at baseline. Gemcitabine (1250 mg/m(2) )-paclitaxel (175 mg/m(2) ) was administered on a 3-weekly schedule until disease progression, and patients were followed up for 12 months (post-enrollment). The primary end point was objective response rate; secondary end points included duration of response, progression-free survival and overall survival.
RESULTS: Overall 60 patients were enrolled. Their mean age was 46.9 (SD ± 9.0) years and 90% of patients had metastatic disease. All patients had previously received chemotherapy. A total of 48 patients (80%) completed the 12-month follow up, and 40 patients (67%) completed at least six cycles of study therapy. The objective response rate (complete response + partial response) was 50% (95% CI: 36.6-63.4). Median duration of response was 5.6 months (95% CI: 4.4-7.6) and median progression-free survival was 7.6 months (95% CI: 5.8-8.8). Overall survival at 12 months was 87% (95% CI: 77.9-95.2). Laboratory toxicities were primarily hematologic, including Grade 3 and 4 neutropenia (n = 27 [45%]) and leukopenia (n = 18 [30%]). Eight patient deaths (13%) were not treatment-related.
CONCLUSION: Gemcitabine-paclitaxel combination therapy is an active and well-tolerated chemotherapy regimen, with expected and manageable toxicity in Chinese patients with metastatic breast cancer.
METHODS: Chinese female patients with unresectable, locally recurrent or metastatic breast cancer who had relapsed after neo-adjuvant anthracycline-based chemotherapy were included. All patients had measurable disease and an Eastern Cooperative Oncology Group performance status of 0 or 1 at baseline. Gemcitabine (1250 mg/m(2) )-paclitaxel (175 mg/m(2) ) was administered on a 3-weekly schedule until disease progression, and patients were followed up for 12 months (post-enrollment). The primary end point was objective response rate; secondary end points included duration of response, progression-free survival and overall survival.
RESULTS: Overall 60 patients were enrolled. Their mean age was 46.9 (SD ± 9.0) years and 90% of patients had metastatic disease. All patients had previously received chemotherapy. A total of 48 patients (80%) completed the 12-month follow up, and 40 patients (67%) completed at least six cycles of study therapy. The objective response rate (complete response + partial response) was 50% (95% CI: 36.6-63.4). Median duration of response was 5.6 months (95% CI: 4.4-7.6) and median progression-free survival was 7.6 months (95% CI: 5.8-8.8). Overall survival at 12 months was 87% (95% CI: 77.9-95.2). Laboratory toxicities were primarily hematologic, including Grade 3 and 4 neutropenia (n = 27 [45%]) and leukopenia (n = 18 [30%]). Eight patient deaths (13%) were not treatment-related.
CONCLUSION: Gemcitabine-paclitaxel combination therapy is an active and well-tolerated chemotherapy regimen, with expected and manageable toxicity in Chinese patients with metastatic breast cancer.
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