Two patients with poor prognosis stage III multiple myeloma have been treated with myeloablative chemoradiotherapy, i.e. 10 Gy fractionated total body irradiation plus 120 mg/m2 intravenous melphalan, and then transplanted with autologous peripheral blood cells harvested by four leukaphereses during the phase of rapid hematopoietic recovery following induction therapy with high-dose (2 g/m2) etoposide and recombinant human glycosylated granulocyte macrophage-colony stimulating factor (rhGM-CSF). Following myeloablative therapy and autologous peripheral blood cell transplantation, both patients experienced brief pancytopenia followed by rapid hematopoietic recovery of leukocytes (time to >500 x 106/I=12 days) and platelets (time to > 100 x 109/l=14 days). In particular, single donor platelet transfusion requirements were limited to one and two transfusions per patient, respectively. Reconstitution has so far been maintained throughout the follow-up period for the two patients (9 and 6 months, respectively). These two cases show that rhGM-CSF-exposed peripheral blood cells are capable of producting prompt and sustained hematopoietic reconstitution in patients treated with myeloablative chemoradiotherapy.
|Number of pages||3|
|Journal||Bone Marrow Transplantation|
|Publication status||Published - 1990|
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