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Syndrome reference sheet
Generated 12 Oct 2026
Cardiology · Cardiology / Genetic cardiology

Alagille syndrome

Also known as: Arteriohepatic dysplasia

Multisystem syndrome with cholestasis, pulmonary artery stenosis and butterfly vertebrae.

Medical specialty
Cardiology
Subspecialty
Cardiology / Genetic cardiology
Sex & age distribution
Male: affected; Female: affected equally; Children: yes, infancy
Gene(s) involved
JAG1, NOTCH2

Etiology & mechanism

Notch signaling pathway defects.

Gene(s) involved (2)

JAG1NOTCH2

Symptoms & signs (9)

butterfly vertebraecholestasisjaundiceperipheral pulmonary stenosisposterior embryotoxonpruritustetralogy of fallottriangular faciesxanthomas
SyndromeScope — educational reference. Content is model-generated and not clinically verified; always confirm against OMIM, Orphanet and GeneReviews before clinical use.