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Bone marrow transplantation for Sanfilippo disease type B
1Bone Marrow Transplant Unit, Westminster Children's Hospital, London, UK.
Journal of Inherited Metabolic Disease
|January 1, 1992
Summary
Allogeneic bone marrow transplants in twins with Sanfilippo B disease showed successful engraftment and improved outcomes. Nine years post-transplant, the twins experienced less severe disease manifestations compared to untreated siblings.
Area of Science:
- * Hematology and Genetic Medicine
- * Pediatric Neurology and Rare Diseases
Background:
- * Sanfilippo B disease is a rare lysosomal storage disorder causing progressive neurodegeneration.
- * Allogeneic bone marrow transplantation (BMT) is an experimental therapy for Sanfilippo B disease.
Observation:
- * Two twins with Sanfilippo B disease underwent allogeneic bone marrow transplantation.
- * This was the first documented instance of BMT for this specific disorder.
Findings:
- * Successful engraftment was confirmed by blood group antigen, tissue type conversion, and increased leukocyte alpha-glucosaminidase activity.
- * Nine years post-transplant, both twins exhibited less severe disease handicaps than their untreated brothers at the same age.
- * One twin still presented with hyperactivity and behavioral issues characteristic of Sanfilippo B disease.
Implications:
- * Allogeneic BMT demonstrates potential as a therapeutic strategy for Sanfilippo B disease, offering improved clinical outcomes.
- * Long-term monitoring is crucial to assess the sustained efficacy and potential residual symptoms of the disorder.
- * Further research is warranted to optimize BMT protocols and evaluate long-term neurodevelopmental and growth trajectories.