Mutation of the RET ligand, neurturin, supports multigenic inheritance in Hirschsprung disease.
Hum Mol Genet
; 7(9): 1449-52, 1998 Sep.
Article
em En
| MEDLINE
| ID: mdl-9700200
ABSTRACT
Hirschsprung disease (HSCR) is a frequent neurocristopathy characterized by the absence of submucosal and myenteric plexuses in a variable length of the gastrointestinal tract. Pedigrees and segregation analyses suggested the involvement of one or several dominant genes with low penetrance in HSCR. Considering that RET and glial cell line-derived neurotrophic factor (GDNF) mutations have been reported in the disease, we regarded the other RET ligand, neurturin (NTN), as an attractive candidate gene, especially as it shares large homologies with GDNF. Here, we report on the finding of a heterozygous missense NTN mutation in a large non-consanguineous family including four children affected with a severe aganglionosis phenotype extending up to the small intestine. Interestingly, it appears that the NTN mutation reported here is not sufficient to cause HSCR, and this multiplex family also segregates a RET mutation. This cascade of independent and additive genetic events fits well with the multigenic pattern of inheritance expected in HSCR, and further support the role of RET ligands in development of the enteric nervous system.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Proteínas Proto-Oncogênicas
/
Receptores Proteína Tirosina Quinases
/
Proteínas de Drosophila
/
Doença de Hirschsprung
/
Mutação
/
Fatores de Crescimento Neural
Tipo de estudo:
Etiology_studies
Limite:
Female
/
Humans
/
Male
Idioma:
En
Revista:
Hum Mol Genet
Assunto da revista:
BIOLOGIA MOLECULAR
/
GENETICA MEDICA
Ano de publicação:
1998
Tipo de documento:
Article
País de afiliação:
França