Abstract
A case-controlled analysis was performed to assess the effect of stem-cell source on autograft in a group of patients with malignant lymphoma reported to the European Bone Marrow Transplant Group (EBMT). The study was performed matching 83 patients autografted with peripheral blood stem cells (PBSC) with 83 autologous bone marrow transplantation (ABMT) patients. The case-matching was carried out following selection of the main prognostic factors for progression-free survival by multivariate analysis. The progression-free survival was similar in both types of transplants (38.5% PBSCT vs. 36.4% ABMT). The overall relapse and progression rate for the PBSCT was 51.2% compared with 50.1% for the ABMT patients. The differences were not significant statistically. The transplant-related mortality was 6% for both groups. The neutrophil and leucocyte recovery occurred faster in the peripheral blood stem-cell transplantation (PBSCT); the platelet recovery was not significant. A higher number of interstitial pneumonitis and fungal infection episodes were observed in the ABMT group. In conclusion, in these closely matched groups, there is no difference in PFS between patients undergoing PBSCT and those undergoing ABMT. However, the patients autografted with PBSC have a more rapid engraftment and a lower toxicity.
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