• A Khwaja, D C Linch, A H Goldstone, R Chopra, R E Marcus, J Z Wimperis, N H Russell, A P Haynes, D W Milligan, and M J Leyland.
• Department of Haematology, University College and Middlesex School of Medicine, London.
• Br. J. Haematol. 1992 Oct 1; 82 (2): 317-23.

AbstractGranulocyte-macrophage colony-stimulating factor (GM-CSF) is active in enhancing the production of mature myeloid cells in vitro and several phase I/II clinical trials have suggested that its administration may accelerate neutrophil recovery after autologous bone marrow transplantation (ABMT). We have conducted a multicentre randomized double-blind placebo controlled trial in patients with poor prognosis malignant lymphoma receiving an identical high-dose combination chemotherapy regimen with ABMT. 61 patients were entered and 29 in each arm of the trial were evaluated. Treatment with GM-CSF did not affect the period of severe neutropenia (absolute neutrophil count (ANC) of < 0.1 x 10(9)/l) but accelerated recovery to an ANC of 0.5 x 10(9)/l (median 14 d v 20 d in controls, P = 0.001). There was no significant difference in platelet recovery between the groups (GM-CSF group platelet dependent for 25 d v control 19 d, P = NS). The number of positive blood cultures was similar in both groups (GM-CSF 14 v placebo 13) and there were no differences in days of fever > 37.5 degrees C (median 8 v 6) or days on parenteral antibiotics (11 v 10). Patients receiving GM-CSF had a median period of hospitalization following BMT of 24 d (control 25). No significant major toxicity attributable to GM-CSF administration was detected. We have confirmed in a randomized trial that GM-CSF accelerates neutrophil but not platelet recovery following ABMT. We were unable to demonstrate any accompanying changes in clinical outcome and believe that further trials are necessary to assess the clinical value of GM-CSF in BMT.

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