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Alagille Syndrome.

Ellen Mitchell1, Melissa Gilbert2, Kathleen M Loomes3

  • 1Division of Pediatric Gastroenterology, Hepatology and Nutrition, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, 4401 Penn Avenue, Pittsburgh, PA 15224, USA.

Clinics in Liver Disease
|September 30, 2018
PubMed
Summary

Alagille syndrome is a genetic disorder affecting multiple body systems, often caused by JAG1 or NOTCH2 gene mutations. While current treatments are supportive, future therapies aim to target Notch pathway signaling for better outcomes.

Keywords:
CholestasisJAG1Liver transplantNOTCH2Pediatric

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Area of Science:

  • Genetics and Molecular Biology
  • Developmental Biology
  • Medical Genetics

Background:

  • Alagille syndrome is an autosomal dominant disorder affecting multiple organ systems.
  • Clinical features exhibit wide variability in penetrance.
  • Mutations in JAG1 or NOTCH2 genes are found in most patients.

Purpose of the Study:

  • To review the genetic basis of Alagille syndrome.
  • To discuss the clinical manifestations and management strategies.
  • To explore future therapeutic targets for Alagille syndrome.

Main Methods:

  • Literature review of Alagille syndrome.
  • Analysis of genetic mutations (JAG1, NOTCH2).
  • Review of clinical phenotypes and outcomes.

Main Results:

  • JAG1 and NOTCH2 mutations are common in Alagille syndrome.
  • No clear genotype-phenotype correlations identified across organ systems.
  • Liver disease causes significant morbidity; cardiac/vascular issues lead to mortality.

Conclusions:

  • Alagille syndrome is a complex genetic disorder with significant clinical variability.
  • Current management is primarily supportive.
  • Targeted interventions for Notch pathway signaling offer future therapeutic promise.