Related Experiment Video
Updated: Aug 10, 2026

In Vivo Modeling of the Morbid Human Genome using Danio rerio
Published on: August 24, 2013
[Wolman disease]
K Mnif1, A Chabchoub, Z Marrakchi
1Service de néonatologie, centre de maternité et de néonatologie de la Rabta, Tunis, Tunisie.
Insights
Wolman disease, a rare genetic disorder, caused severe illness and death in infancy. This case highlights its autosomal recessive inheritance and the importance of early diagnosis through acid lipase deficiency testing.
Area of Science:
- Genetics
- Pediatrics
- Metabolic Disorders
Background:
- Wolman disease is a severe, fatal lysosomal storage disorder.
- Characterized by hepatosplenomegaly and adrenal calcifications.
- Typically results in death within the first year of life.
Observation:
- A Tunisian infant presented with hepatomegaly, vomiting, watery stools, and failure to thrive.
- Family history revealed two deceased sisters with similar symptoms and adrenal calcifications.
- The patient exhibited hepatomegaly without splenomegaly and anemia; liver biopsy showed vacuolated cells.
Findings:
- Acid lipase deficiency was confirmed in cultured skin fibroblasts, diagnosing Wolman disease.
- The condition was inherited as an autosomal recessive disorder.
- The patient and his two sisters died within the first six months of life.
Implications:
- This case represents the first documented instance of Wolman disease in Tunisia.
- Demonstrates the utility of fibroblast acid lipase activity assays for diagnosis.
- Highlights the importance of considering genetic counseling and prenatal diagnosis in affected families.
Background:
Wolman disease is a severe disease associated with hepatosplenomegaly and adrenal calcifications; it is nearly always fatal in the first year of life.
Case Report:
A boy was born to consanguineous parents. His weight was 3,500 g, height 53 cm. Hepatomegaly was observed at the age of 26 days; he also had vomiting and watery stools with failure to thrive. Diagnosis of Wolman disease was suspected due to family history. Two sisters had died at the age of 3 months without precise diagnosis; both had abdominal distension, hepatosplenomegaly, anemia and inanition; CT scan showed calcifications of adrenal glands in one of them that had been attributed to adrenal hemorrhage. Investigations in our patient showed no adrenal calcification, hepatomegaly without splenomegaly, anemia (Hb: 8 g/100 ml). Liver biopsy showed enlarged and vacuolated parenchymal and Kupffer cells but the marrow did not contain foam cells. Acid lipase deficiency was demonstrated in cultured skin fibroblasts, permitting prenatal diagnosis in a further sib.
Conclusion:
This case of Wolman disease was the first seen in Tunisia; it was inherited as an autosomal recessive disorder; this patient, as two of his sisters, died during the first 6 months of life.
Related Concept Videos
Pleiotropy
Lysosomal Hydrolases
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Cushing Syndrome II: Pathophysiology
Parkinson Disease ll: Pathophysiology
Huntington Disease l: Introduction

