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mtDNA Deletion in an Iranian Infant with Pearson Marrow Syndrome

Mohammad Taghi Arzanian1, Aziz Eghbali, Parvaneh Karimzade

  • 1Department of Pediatric Hematology- Oncology, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran.

Iranian Journal of Pediatrics
|October 12, 2012
PubMed

Insights

Pearson syndrome (PS) is a rare mitochondrial disorder affecting multiple systems. Early consideration in infants with neurological issues or cytopenias aids diagnosis.

Area of Science:

  • Mitochondrial genetics
  • Hematology
  • Neurology

Background:

  • Pearson syndrome (PS) is a rare multisystem mitochondrial disorder.
  • Characterized by refractory sideroblastic anemia, pancytopenia, and exocrine pancreatic insufficiency.
  • Often involves variable neurological, hepatic, renal, and endocrine complications.

Observation:

  • A six-month-old female infant presented with neurological manifestations, including seizures.
  • Hematopoietic abnormalities included macrocytic anemia and neutropenia.
  • Bone marrow aspiration showed vacuolization of erythroid and myeloid precursors.

Findings:

  • Analysis of peripheral blood mtDNA revealed an 8.5 kb deletion.
  • This genetic finding confirmed the diagnosis of Pearson syndrome.
  • The patient's presentation included both neurological and hematological features.

Implications:

  • Pearson syndrome diagnosis should be considered in infants with neurological diseases.
  • Cytopenias and refractory anemia are key indicators for suspecting PS.
  • Early recognition is crucial for managing this complex mitochondrial disorder.
Abstract

Keywords:
Exocrine Pancreatic InsufficiencyMitochondrial DNAPancytopeniaPearson marrow syndromemtDNA

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