Long-term marrow reconstitutive ability of autologous grafts in lymphoma patients using peripheral blood mobilized with granulocyte colony-stimulating factor or granulocyte-macrophage colony-stimulating factor compared to bone marrow

Lotfi Benboubker, Guillaume Cartron, Françoise Roingeard, Martine Delain, Michel Degenne, Claude Linassier, Olivier Hérault, Danielle Truglio, Myrtille Bout, André Petit, Jean Louis Brémond, Isabelle Desbois, Philippe Colombat, Christian Binet, Jorge Domenech
Experimental Hematology 2003, 31 (1): 89-97

OBJECTIVES: The aim of this study was designed to compare the in vivo long-term hematopoietic potential of bone marrow and peripheral blood grafts.

MATERIALS AND METHODS: Marrow progenitor cell recovery was assessed for up to 4 years in 227 patients. One hundred patients were treated for malignant lymphomas by autologous bone marrow transplantation (BMT) and 127 by peripheral blood progenitor cell transplantation (PBPCT).

RESULTS: Marrow progenitor cell counts were decreased for several years with both bone marrow and peripheral blood grafts. They were not different according to the origin of the graft, despite the reduced duration of peripheral blood cell recovery observed after PBPCT. Granulocyte colony-stimulating factor (G-CSF) used for PB graft mobilization and after transplantation resulted in faster neutrophil recovery compared to granulocyte-macrophage colony-stimulating factor (GM-CSF) with no evidence of decreased marrow progenitor cell recoveries. On the other hand, postgraft administration of GM-CSF enhanced long-term colony-forming unit granulocyte-macrophage reconstitution only after BMT. Factors that influenced marrow progenitor cell reconstitution have been identified by univariate and multivariate analysis: age, gender, type of lymphoma, and postgraft administration of hematopoietic growth factors (HGF) for the whole patient group; gender, graft progenitor cell yields, and type of HGF (G-CSF vs GM-CSF) for the PBPCT group; and only type of HGF for the BMT group. Despite faster peripheral blood cell recovery, persistent deficiency of marrow progenitor cells was found several years after PBPCT, as observed after BMT. G-CSF-mobilized PBPCT resulted in faster neutrophil recovery compared to GM-CSF mobilization, with no difference in long-term hematopoietic reconstitution.

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