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Fatal familial cholestatic syndrome in Greenland Eskimo children
Insights
This study describes a rare inherited liver disease in 16 children, characterized by jaundice and bleeding, often fatal in early childhood. Genetic counseling is crucial due to unknown causes and lack of treatment.
Area of Science:
- Pediatrics
- Hepatology
- Medical Genetics
Background:
- A rare syndrome of intrahepatic cholestasis was observed in 16 Greenland Eskimo children.
- The condition leads to severe health issues and mortality in early childhood.
Purpose of the Study:
- To characterize the clinical features, inheritance patterns, and outcomes of this intrahepatic cholestasis syndrome.
- To identify potential etiological factors and inform genetic counseling.
Main Methods:
- Clinical observation and pedigree analysis of 16 affected children.
- Biochemical and hematological assessments including liver function tests, coagulation profiles, and mineral metabolism.
- Longitudinal follow-up of surviving patients.
Main Results:
- Autosomal recessive inheritance pattern suggested by family pedigrees.
- Typical clinical manifestations included jaundice, bleeding, malnutrition, osteodystrophy, and dwarfism.
- Biochemical findings revealed hyperbilirubinaemia, hypoprothrombinaemia, thrombocytosis, elevated alkaline phosphatase, and secondary hyperparathyroidism. Hepatic fibrosis developed with age.
Conclusions:
- The syndrome presents with significant morbidity and mortality, primarily due to bleeding and infections.
- While sharing features with familial intrahepatic cholestasis, the specific etiology remains unknown.
- Genetic counseling is essential for affected families due to the presumed genetic basis and lack of specific treatment.
Abstract:
A syndrome of intrahepatic cholestasis leading to death in early childhood was studied in 16 Greenland Eskimo children. The pedigrees are compatible with autosomal recessive inheritance. Jaundice, bleeding, pruritus, malnutrition, steatorrhoea, osteodystrophy and dwarfism were typical clinical features. Eight had died between the ages of six weeks and three years due to bleeding or infections. Hyperbilirubinaemia, profound hypoprothrombinaemia, thrombocytosis and elevated alkaline phosphatase levels were evident. Serum calcium, phosphate and parathyroid hormone levels indicated a secondary hyperparathyroidism. Hepatic fibrosis developed with increasing age. Follow-up of the surviving patients was 4 to 30 months. The aetiology of the disease is unknown. The syndrome has some features in common with previously described patients with familial intrahepatic cholestasis. No specific treatment is available. Genetic counselling is essential.