Dosing regimen of granulocyte-macrophage colony-stimulating factor to support dose-intensive chemotherapy.
1992
PURPOSEThis trial evaluated the optimum dosing regimen for recombinant human granulocyte-macrophage colony-stimulating factor (rhu GM-CSF) to support a dose-intensive chemotherapy regimen given without progenitor cell replacement.PATIENTS AND METHODSFifty-one patients with refractory malignancy received cyclophosphamide 2,500 mg/m2 on days 1 and 2, etoposide 500 mg/m2 on days 1, 2, and 3, and cisplatin 50 mg/m2 on days 1, 2, and 3. Patients were hospitalized from cycle days 1 to 4 for chemotherapy and readmitted for cytopenic temperatures above 38.5 degrees C. Cycles were repeated every 35 days in patients who responded to a total of three cycles. GM-CSF was given at doses of 250 to 1,000 micrograms/m2 by continuous intravenous infusion (CIV) or subcutaneously starting on cycle days 3 to 6. Two nonrandomized control groups are used.RESULTSThe optimum regimen of GM-CSF for shortening the duration of leukopenia (WBC count less than 300/microL) was 500 micrograms/m2 given CIV. Duration of leukopenia was 5.9 ...
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