title: Familial stenosis of the pulmonary artery branches with a JAG1 mutation.
abstract: Although most congenital heart defects are isolated abnormalities of embryonic development, with little genetic contribution, a small number are components of syndromes. In such cases, an accurate diagnosis has important implications for individual prognosis and familial genetic counseling. Alagille syndrome (AGS) is a dominantly inherited multisystem developmental disorder, which primarily affects the liver, heart, eyes, skeleton, and face. In recent years, the identification of the AGS gene has drawn attention to the existence of subclinical carriers, and broadened the spectrum of phenotypical variation associated with this syndrome. The authors present a case of mother and son with benign stenosis of the pulmonary artery branches. Subtle facial aspects suggested the diagnosis of AGS, which was confirmed by molecular analysis. Relevant clinical investigations and diagnostic implications are discussed.
authors.affiliation: Serviço de Genética, Hospital de Santa Maria, Lisboa, Portugal. anabertasousa@netcalbo.pt
authors.forename: Ana Berta
authors.initials: AB
authors.lastname: Sousa
authors.forename: Ana
authors.initials: A
authors.lastname: Medeira
authors.forename: Binita M
authors.initials: BM
authors.lastname: Kamath
authors.forename: Nancy B
authors.initials: NB
authors.lastname: Spinner
authors.forename: Isabel
authors.initials: I
authors.lastname: Cordeiro
mesh_terms: D001157:Arterial Occlusive Diseases / Q000235:genetics*; D002135:Calcium-Binding Proteins / Q000235:genetics*; D002648:Child; D006801:Humans; D036341:Intercellular Signaling Peptides and Proteins / Q000235:genetics*; D000072100:Jagged-1 Protein; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D009154:Mutation; D011651:Pulmonary Artery; D000072099:Serrate-Jagged Proteins
chemical_list: D002135:Calcium-Binding Proteins; D036341:Intercellular Signaling Peptides and Proteins; C000606273:JAG1 protein, human; D000072100:Jagged-1 Protein; D008565:Membrane Proteins; D000072099:Serrate-Jagged Proteins