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Severe hepatic Wilson's disease in preschool-aged children
D C Wilson1, M J Phillips, D W Cox
1Division of Gastroenterology & Nutrition and Department of Pathology, The Hospital for Sick Children, Toronto, Canada.
Insights
Wilson's disease can manifest with severe liver disease in young children. A specific ATP7B gene mutation (IVS4-1:G>C) caused early-onset symptoms, highlighting the need for considering this genetic disorder in pediatric liver disease diagnosis.
Area of Science:
- Genetics
- Pediatric Gastroenterology
- Hepatology
Background:
- Wilson's disease is an inherited disorder of copper metabolism.
- Early diagnosis and treatment are crucial to prevent severe liver damage.
- Genetic mutations in the ATP7B gene are the underlying cause.
Observation:
- A 3-year-old girl presented with hemolytic anemia, hepatosplenomegaly, ascites, and decompensated chronic liver disease.
- Genotypic analysis identified homozygosity for the IVS4-1:G>C splice site mutation in the ATP7B gene.
- This mutation is predicted to completely abolish the functional gene product.
Findings:
- The identified ATP7B mutation (IVS4-1:G>C) is a severe genetic defect.
- This severe mutation likely caused the patient's very early-onset liver disease.
- The patient exhibited symptoms consistent with advanced Wilson's disease at a young age.
Implications:
- Wilson's disease should be included in the differential diagnosis for preschool-aged children with established liver disease.
- Genetic testing for ATP7B mutations is important for diagnosing pediatric liver conditions.
- Understanding genotype-phenotype correlations can aid in predicting disease severity and onset.
Abstract:
A 3-year-old girl presented with hemolytic anemia, hepatosplenomegaly, ascites, and evidence of decompensated chronic liver disease. Genotypic DNA analysis revealed that the patient was homozygous for a splice site mutation now designated IVS4-1:G>C, expected to destroy completely the functional gene product of ATP7B, the gene responsible for Wilson's disease. We suggest that this severe mutation caused very early liver disease. Wilson's disease should be considered in the differential diagnosis of established liver disease in the preschool-aged child.