Breast Cancer
Conditions
Keywords
metastatic breast cancer, capecitabine, synergistic effect, chemotherapy
Brief summary
The primary objective of this study is to evaluate the time to progression. Secondary objectives are safety, OS and pharmacogenetic analysis. Sixty patients will be enrolled into this study.
Detailed description
Xeloda (capecitabine) is converted to 5-fluorouracil by thymidine phosphorylase, and cyclophosphamide is capable of upregulating the expression of thymidine phosphorylase suggesting a synergistic effect.
Interventions
capecitabine 1000 mg/m2 oral Bid d1-14 cyclophosphamide 65 mg/m2 oral Qd d1-14
Sponsors
Study design
Eligibility
Inclusion criteria
* Histologically confirmed breast cancer * Anthracycline and taxane pretreated metastatic breast cancer * Have not been previously treated with capecitabine * ECOG performance status of ≤ 1 * Are female and ≥ 18 and ≤ 70 years of age * Have at least one target lesion according to the RECIST criteria
Exclusion criteria
* Pregnant or lactating women * ECOG ≥ 2 * Have been treated with capecitabine * Evidence of CNS metastasis * History of another malignancy within the last five years except cured basal cell carcinoma of skin and carcinoma in-situ of uterine cervix or a contralateral breast cancer * Abnormal laboratory values: hemoglobin \< 8.0 g/dl, neutrophils \< 1.5×10\^9/L, platelets \< 100×10\^9/L, serum creatinine \> upper limit of normal (ULN), serum bilirubin \> ULN, ALT and AST \> 5×ULN, AKP \> 5×ULN * Serious uncontrolled intercurrent infection * Life expectancy of less than 3 months
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| TTP (first treatment of this regimen to disease progression) | every two cycles |
Secondary
| Measure | Time frame |
|---|---|
| side effects | all cycles |
| pharmacogenetic analysis | collect blood samples before this therapy |
Countries
China