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Comparative analysis of unrelated cord blood transplantation and HLA-matched sibling hematopoietic stem cell transplantation in children with high-risk or advanced acute leukemia

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Abstract

The aim of this report was to present a clinical comparison of unrelated cord blood transplantation (CBT) and human leukocyte antigen (HLA)-matched sibling allogeneic peripheral blood stem cell or bone marrow transplantation (allo-PBSCT/BMT) in children with high-risk or advanced acute leukemia. A total of 115 consecutive pediatric patients received unrelated CBT (n = 90) or sibling allo-PBSCT/BMT (n = 25) between 2000 and 2012. Neutrophil and platelet recovery were significantly delayed after CBT compared to allo-PBSCT/BMT. There was no difference in the incidence of acute graft-versus-host disease (GVHD) or chronic GVHD between the two groups. The cumulative incidence of transplant-related mortality (TRM) was higher in the CBT group than in the allo-PBSCT/BMT group (32.5 vs 12.8 %) (p = 0.03). The cumulative incidence of relapse was 13.1 % after CBT, which was significantly lower than that of after allo-PBSCT/BMT (45.3 %) (p = 0.015). The overall survival (OS) and leukemia-free survival (LFS) in the CBT group were similar to those of the allo-PBSCT/BMT group; however, for acute myeloid leukemia (AML) patients, the 5-year LFS in the CBT group was slightly better than the allo-PBSCT/BMT group (55.7 % for CBT and 32.7 % for allo-PBSCT/BMT) (p = 0.08). Our comparisons suggest that for high-risk or advanced childhood acute leukemia, unrelated CBT has a higher TRM and similar long-term survival, but better antileukemia effect than HLA-matched sibling PBSCT/BMT. New strategies and better supportive care are required to decrease the TRM of CBT.

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Acknowledgments

This work was supported by grants from Anhui Provincial Scientific and Technological Projects Foundation (11010402164).

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The authors declare that they have no conflict of interest.

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Correspondence to Zimin Sun.

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Zheng, C., Zhu, X., Tang, B. et al. Comparative analysis of unrelated cord blood transplantation and HLA-matched sibling hematopoietic stem cell transplantation in children with high-risk or advanced acute leukemia. Ann Hematol 94, 473–480 (2015). https://doi.org/10.1007/s00277-014-2213-y

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  • DOI: https://doi.org/10.1007/s00277-014-2213-y

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