Segregation analysis of Alagille syndrome. - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Journal of Medical Genetics Year : 1994

Segregation analysis of Alagille syndrome.


Alagille syndrome (AGS) is a well defined genetic disorder characterised by five major features. An autosomal dominant mode of transmission with reduced penetrance has been suggested by the analysis of a limited number of families. However there has been no statistical analysis. We report here the first segregation analysis of AGS, using 33 families collected through 43 probands. Segregation analysis of these families allowed us to conclude that AGS is transmitted as a dominant disorder with 94% penetrance and 15% of cases are sporadic. The expressivity of the phenotype was variable and 26 persons (15 parents and 11 sibs) were identified as presenting minor forms of the disease. These results are valuable for genetic counselling.

Dates and versions

hal-04067415 , version 1 (21-04-2023)





Sophie Dhorne-Pollet, Jean-Franvois F Deleuze, Michelle Hadchouel, Catherine Bonaiti-Pellie. Segregation analysis of Alagille syndrome.. Journal of Medical Genetics, 1994, 31 (6), pp.453-457. ⟨10.1136/jmg.31.6.453⟩. ⟨hal-04067415⟩
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