Hematopoietic stem cell transplantation in children with genetic defects

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Velu Nair1, Satyaranjan Das, Ajay Sharma

  • 1Department of Haematology and Bone Marrow Transplantation, Army Hospital Research and Referral, Delhi Cantonment, Delhi, India. nairvelu2000@yahoo.com

Indian Pediatrics
|February 14, 2009
PubMed

Insights

Allogeneic stem cell transplants in children with genetic blood disorders show a 77% disease-free survival. Repeat transplants were successful after initial graft rejection in some cases.

Area of Science:

  • Pediatric Hematology
  • Stem Cell Transplantation
  • Genetic Blood Disorders

Background:

  • Genetic defects affecting hematopoietic cell production or function necessitate advanced treatment options.
  • Allogeneic stem cell transplantation (HSCT) is a potential curative therapy for various inherited blood disorders.

Purpose of the Study:

  • To evaluate the outcomes of allogeneic HSCT in children with genetic defects of hematopoiesis.
  • To assess disease-free survival and identify major complications associated with HSCT in this pediatric cohort.

Main Methods:

  • Retrospective analysis of 19 allogeneic HSCT procedures in 17 children with genetic blood disorders.
  • Patients received grafts from HLA-identical siblings; diagnoses included thalassemia major, Diamond Blackfan anemia, Fanconi anemia, and congenital dyserythropoietic anemia.

Main Results:

  • Disease-free survival was 77% at a mean follow-up of 36 months.
  • Major complications included graft-versus-host disease, veno-occlusive disease, CMV infection, and hemorrhage.
  • Two patients (one with thalassemia major, one with Fanconi anemia) experienced graft rejection but were successfully re-transplanted.

Conclusions:

  • Allogeneic HSCT from HLA-identical siblings offers a favorable survival rate for children with severe genetic blood disorders.
  • Graft rejection is a manageable complication, with successful outcomes following modified re-transplantation protocols.

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