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Lookup NU author(s): Professor Hermann Josef Vormoor
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We recently reported that virtually all children with acute leukaemia and myelodysplastic syndrome (MDS) who develop the phenotype of increasing mixed chimaerism (MC) after allogeneic stem cell transplantation (allo-SCT) will relapse. We therefore performed a prospective, multi-centre study focused on children with MDS (n = 65; advanced MDS = 44, refractory cytopenia = 21) after allo-SCT in order to determine to what extent relapse can be prevented by pre-emptive immunotherapy on the basis of increasing MC. Analyses of chimaerism in 44 patients with advanced MDS revealed 31 cases with complete chimaerism (CC)/low-level MC/transient MC, 11 cases with increasing MC and two cases with decreasing MC. The same analyses in 21 MDS patients with refractory cytopenia revealed 17 cases with CC/low-level MC, one case with increasing MC and three cases with decreasing MC. Pre-emptive immunotherapy performed on each patient that showed increasing MC improved event-free survival from 0%, as seen in prior studies, to 50%. We therefore conclude that pre-emptive immunotherapy is an effective treatment option to prevent impending relapse in children with MDS after allo-SCT.
Author(s): Bader P, Niemeyer C, Willasch A, Kreyenberg H, Strahm B, Kremens B, Gruhn B, Dilloo D, Vormoor J, Lang P, Niethammer D, Klingebiel T, Beck JF
Publication type: Article
Publication status: Published
Journal: British Journal of Haematology
Year: 2005
Volume: 128
Issue: 5
Pages: 649-58
ISSN (print): 0007-1048
ISSN (electronic): 1365-2141
URL: http://dx.doi.org/10.1111/j.1365-2141.2004.05354.x
DOI: 10.1111/j.1365-2141.2004.05354.x
Notes: 0007-1048 (Print) Clinical Trial Journal Article Multicenter Study
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