Abstract：Alagille syndrome (ALGS), also known as arteriohepatic dysplasia, is an autosomal dominant disease with multisystem involvement. In this disease, the Notch signalling pathway is impaired due to mutation in JAG1 (ALGStype 1) or NOTCH2 (ALGS type 2) gene, affecting multiple organs or systems such as liver, heart, eyes, vertebrateand face. The main clinical features of ALGS include chronic cholestasis, congenital heart disease, mild vertebralsegmentation abnormalities, characteristic face, postcorneal embryotoxon and poor kidney development. This article reviews the recent advances in the pathogenesis, clinical presentations, diagnosis and treatment of this syndrome.
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