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Crigler-Najjar syndrome type 2: Novel UGT1A1 mutation
Karippoth Mohandas Nair1, Peter Lohse, Sheela Nampoothiri
1Department of Pediatrics, Medical College, Calicut, Kerala, India.
Indian Journal of Human Genetics
|November 20, 2012
Summary
Crigler-Najjar syndrome type 2, a rare genetic disorder causing persistent unconjugated hyperbilirubinemia, can be fatal if not managed promptly. This study details a case with a new UGT1A1 gene mutation.
Area of Science:
- Genetics
- Biochemistry
- Pediatrics
Background:
- Crigler-Najjar syndrome type 2 (CN2) is an autosomal recessive disorder.
- It leads to persistent unconjugated hyperbilirubinemia, posing risks throughout life.
- Early diagnosis and management are crucial for patient outcomes.
Observation:
- A case of CN2 presented with severe unconjugated hyperbilirubinemia.
- The patient was found to have a novel homozygous mutation in the UGT1A1 gene.
Findings:
- The identified mutation is UGT1A1 p.Pro176Leu.
- This novel mutation is associated with CN2, impacting bilirubin metabolism.
- The genetic findings provide insight into the molecular basis of the syndrome.
Implications:
- This discovery expands the known spectrum of UGT1A1 mutations causing CN2.
- Understanding novel mutations aids in accurate genetic diagnosis and counseling.
- Further research into UGT1A1 variants can improve therapeutic strategies for hyperbilirubinemia.
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