Abstract
Patients with metastatic breast cancer in complete remission are the ones most likely to have an improved outcome with subsequent high-dose chemotherapy and autologous peripheral blood stem cell transplantation (HDC-PBSCT). Peripheral blood stem cells are usually procured following mobilization with single agent chemotherapy and colony-stimulating factor support. We utilized a dose-intense regimen of paclitaxel 200 mg/m2 i.v., etoposide 60 mg/kg i.v., and cyclophosphamide 3 g/m2 i.v. (TEC) followed by daily administration of granulocyte colony-stimulating factor. The aim was not only to mobilize stem cells but also to achieve optimal tumor cytoreduction prior to HDC/PBSCT. One hundred consecutive patients with metastatic breast cancer received 257 cycles of TEC between March 1994 and June 1997, with the aim of collecting 5 × 106 CD34-positive cells/kg usually following the second cycle of chemotherapy. Patient characteristics included a median age of 45 years, a median of two organ systems involved by disease, a median of two prior chemotherapy regimens and eight prior chemotherapy cycles, and a median interval of 8 months from diagnosis of metastases to first cycle of TEC. There were 61 febrile episodes during neutropenia and 13 of these were associated with bacteremia or fungemia. Mortality rate was 1%. An adequate number of stem cells was collected in 90% of patients. The overall response rate of the tumor was 58.8% with 23.7% complete responders among 97 evaluable patients. Multivariate analysis demonstrated chemosensitivity to the most recent standard chemotherapy regimen administered for metastatic disease, an ECOG performance score of 0 as opposed to 1, 2 or 3, and involvement by disease of only one organ system as significant variables for achieving a complete remission with TEC. This novel dose-intense regimen was safe and well tolerated, highly active against metastatic breast cancer, and capable of excellent stem cell mobilization. Bone Marrow Transplantation (2000) 25, 123–130.
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Bilgrami, S., Feingold, J., Bona, R. et al. Dose-intense paclitaxel, etoposide and cyclophosphamide: a safe and active regimen for tumor cytoreduction and stem cell mobilization in metastatic breast cancer. Bone Marrow Transplant 25, 123–130 (2000). https://doi.org/10.1038/sj.bmt.1702125
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DOI: https://doi.org/10.1038/sj.bmt.1702125
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