Alagille syndrome and Wilson disease in siblings: A diagnostic conundrum

Meghan Amson, Esther Lamoureux, Nir Hilzenrat, Marc Tischkowitz

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The authors describe two siblings, each with a different, rare genetic condition that affects liver function. The index case, the 18-year-old asymptomatic brother of a young man recently diagnosed with Wilson disease, presented for Wilson disease screening and was also found to have abnormal liver function suggestive of cholestasis. However, ceruloplasmin level, 24 h urine copper concentration and liver synthetic function were normal. Further hepatic investigations and genetic mutation analysis were performed, ultimately leading to a diagnosis of Alagille syndrome. He was treated with ursodiol, which resulted in normalization of his liver function tests. Subsequently, he was found to be a carrier for a mutation in the Wilson disease gene, ATP7B. In the present report, the potential implications of being a heterozygote for Wilson disease in the context of Alagille syndrome are discussed. Also stressed is that care must be exercised by the clinician when diagnosing family members who may present with two different disorders closely mimicking one another.

Original languageEnglish
Pages (from-to)330-332
Number of pages3
JournalCanadian Journal of Gastroenterology
Issue number6
StatePublished - 1 Jan 2012
Externally publishedYes


  • ATP7B
  • Cholestasis
  • Hereditary liver disease
  • JAG1

ASJC Scopus subject areas

  • Gastroenterology


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