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Successful unrelated cord blood transplantation in two children with severe combined immunodeficiency syndrome

Summary:

We describe the successful unrelated cord blood transplantation in two patients affected by a Zap-70 deficiency and an Omenn-like syndrome, respectively. The patients were hospitalised for recurrent infections at the age of 13 and 2 months, respectively. An unrelated cord blood unit was found for each. The conditioning regimen was cyclophosphamide, busulfan and antithymocyte globulin. The total number of infused cells was 15.1×107/kg and 17×107/kg, respectively. Neutrophil engraftment was achieved on days +15 and +23, and platelet count >50×109/l was achieved on days +21 and +52, respectively. One patient presented acute Graft-versus-host disease (GVHD) grade I and the other grade III. Chimerism was mixed and full donor. Normal lymphoproliferative response to mitogens and alloantigens was detectable at 6 months for both. No chronic GVHD was observed in either. The patients are alive and well at 53 and 15 months after transplantation. In conclusion, umbilical cord blood represents a valid alternative source of haemopoietic stem cells.

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Acknowledgements

This work was supported by grants from the Associazione Italiana per la Ricerca sul Cancro (AIRC, Milano), from the Ministero dell'Università e della Ricerca Scientifica e Tecnologica (MURST, Roma) to E.M. and from the Associazione Donatrici Italiane di Sangue di Cordone Ombelicale (ADISCO, Sezione Piemonte).

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Fagioli, F., Biasin, E., Berger, M. et al. Successful unrelated cord blood transplantation in two children with severe combined immunodeficiency syndrome. Bone Marrow Transplant 31, 133–136 (2003). https://doi.org/10.1038/sj.bmt.1703800

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