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  • Title: Granulocyte-macrophage colony-stimulating factor (GM-CSF) allows acceleration and dose intensity increase of CEF chemotherapy: a randomised study in patients with advanced breast cancer.
    Author: Ardizzoni A, Venturini M, Sertoli MR, Giannessi PG, Brema F, Danova M, Testore F, Mariani GL, Pennucci MC, Queirolo P.
    Journal: Br J Cancer; 1994 Feb; 69(2):385-91. PubMed ID: 8297739.
    Abstract:
    A randomised study was conducted in 62 patients with advanced breast cancer to assess whether granulocyte-macrophage colony-stimulating factor (GM-CSF) would yield an increase in the dose intensity of a standard-dose CEF regimen through an acceleration of chemotherapy administration. Patients received CEF (cyclophosphamide 600 mg m-2, epidoxorubicin 60 mg m-2 and fluorouracil 600 mg m-2) i.v. on day 1 or the same chemotherapy, plus GM-CSF 10 micrograms kg-1 s.c. starting from day 4, repeated as soon as haematopoietic recovery from nadir occurred. Patients in the CEF + GM-CSF group received chemotherapy at a median interval of 16 days compared with 20 days in the control group. This led to a significant increase (P = 0.02) in the dose intensity actually administered in the third, fourth and sixth cycles: +28%, +25%, +20% respectively. Non-haematological toxicity was mild. GM-CSF had to be reduced or suspended in 50% of patients because of toxicity. Haematological toxicity, mainly cumulative anaemia and thrombocytopenia, was manageable. An increase in response rate for patients with measurable disease, of borderline statistical significance (P = 0.088, P for trend = 0.018), from 42% in the CEF group to 69% in the CEF + GM-CSF group, was observed. This randomised trial indicates that GM-CSF is useful for chemotherapy acceleration. Accelerated CEF + GM-CSF is a moderately dose-intensive regimen that can be administered in an outpatient clinic and is associated with a high objective response.
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