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Severe hypertriglyceridemia in an infant with red cell pyruvate kinase deficiency

Aarati Rao1, Monica Hulbert, David B Wilson

  • 1Department of Pediatrics, Washington University School of Medicine, St. Louis Children's Hospital, St. Louis, MO 63110, USA.

Indian Pediatrics
|May 1, 2007
PubMed

Insights

Severe hypertriglyceridemia in infants with beta-thalassemia major or pyruvate kinase deficiency may stem from hemolysis and wasting. Treatment with hypertransfusion therapy resolved hyperlipidemia in one patient.

Area of Science:

  • Pediatric Hematology
  • Metabolic Disorders
  • Biochemistry

Background:

  • Severe hypertriglyceridemia is observed in infants with beta-thalassemia major, a condition known as hypertriglyceridemia-thalassemia syndrome.
  • The underlying pathophysiology of this association remains poorly understood.

Observation:

  • A 6-month-old girl with red cell pyruvate kinase (PK) deficiency presented with failure to thrive and severe hypertriglyceridemia (over 1500 mg/dL).
  • Hyperlipidemia resolved following hypertransfusion therapy.
  • After splenectomy at 18 months, the patient became transfusion-independent with normalized triglyceride levels.

Findings:

  • This case suggests a link between pyruvate kinase deficiency, severe hemolysis, and hypertriglyceridemia in infants.
  • The resolution of hypertriglyceridemia with hypertransfusion therapy supports the role of hemolysis in the condition.

Implications:

  • Severe hemolysis and chronic wasting are proposed as potential causes for hypertriglyceridemia in infants with thalassemia or PK deficiency.
  • Understanding these mechanisms can inform management strategies for affected infants.
  • Further research is warranted to elucidate the precise pathophysiological links.

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