PMID: 8608239Feb 15, 1996Paper

Biological effects of recombinant human granulocyte colony-stimulating factor in patients with untreated acute myeloid leukemia.

Blood
M R BaerC D Bloomfield

Abstract

Hematopoietic growth factors are being administered to patients with acute myeloid leukemia (AML) both to shorten the duration of chemotherapy-induced neutropenia and in an attempt to increase cytotoxicity of cell cycle-specific agents. However, limited information is available concerning the effects of growth factors in AML patients. To examine the in vivo effects of recombinant human granulocyte colony-stimulating factor (G-CSF) on AML cells, laboratory studies were performed before and after a 72-hour intravenous infusion of G-CSF (10 micrograms/kg/d) administered to 28 untreated AML patients. Twenty-seven patients (96%) showed increases in at least one of the following parameters after G-CSF: blood blasts, bone marrow (BM) blasts, leukemia cells in S phase or interphase cells with leukemia-specific markers shown by fluorescence in situ hybridization. The median paired change in absolute blast count was +2.7 x 10(9)/L (P = .0001) after G-CSF, as compared with 0.0 during the 72 hours before initiation of G-CSF. The median percentage of BM leukemia cells in S phase increased from 6.0% to 10.7% after G-CSF (median change, %5.9%; P = .009). Interphase BM cells with trisomy 8 or monosomy 7 increased in 6 of 6 patients with these ...Continue Reading

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