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Clinical manifestations and management of four children with Pearson syndrome

Manuela Tumino1, Concetta Meli, Piero Farruggia

  • 1Pediatric Hematology and Oncology, University of Catania, Catania, Italy.

American Journal of Medical Genetics. Part A
|October 21, 2011
PubMed

Insights

Pearson syndrome, a fatal mitochondrial DNA disorder, often presents with hematological issues in infants. Hematopoietic stem cell transplantation may offer benefits in early stages, despite potential risks like secondary cancers.

Area of Science:

  • Mitochondrial genetics
  • Pediatric hematology
  • Rare genetic disorders

Background:

  • Pearson syndrome is a severe, often fatal, mitochondrial DNA disorder diagnosed in infancy.
  • It is characterized by bone marrow failure and pancreatic dysfunction.
  • Genetic mutations in mitochondrial DNA are the underlying cause.

Observation:

  • This study reports on four pediatric cases of Pearson syndrome presenting with hematological disorders.
  • Three patients experienced fatal outcomes.
  • One patient underwent hematopoietic stem cell transplantation.

Findings:

  • Hematopoietic stem cell transplantation in the affected patient corrected both hematological and non-hematological manifestations, including metabolic acidosis.
  • Despite successful correction of disease symptoms, this patient later succumbed to a secondary malignancy post-transplantation.

Implications:

  • Hematopoietic stem cell transplantation is proposed as a potential therapeutic option for Pearson syndrome, particularly when initiated early.
  • The findings highlight the complex risks and benefits associated with transplantation for this rare mitochondrial disorder.
  • Further research is warranted to optimize transplantation protocols and manage long-term complications.

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