Abstract:
:Hirschsprung disease (HSCR, aganglionic megacolon) is a frequent congenital malformation regarded as a multigenic neurocristopathy. Two susceptibility genes have been recently identified in HSCR, namely the RET proto-oncogene and the endothelin B receptor (EDNRB) gene. Hitherto however, homozygosity for EDNRB mutations accounted for the HSCR-Waardenburg syndrome (WS) association. Here, we report heterozygous EDNRB missense mutations (G57S, R319W and P383L) in isolated HSCR. These data might suggest that EDNRB mutations could be dosage sensitive: heterozygosity would predispose to isolated HSCR with incomplete penetrance, while homozygosity would result in more complex neurocristopathies associating HSCR and WS features. In addition, the present data give further support to the role of the endothelin-signalling pathway in the development of neural crest-derived enteric neurons.
journal_name
Hum Mol Genetjournal_title
Human molecular geneticsauthors
Amiel J,Attié T,Jan D,Pelet A,Edery P,Bidaud C,Lacombe D,Tam P,Simeoni J,Flori E,Nihoul-Fékété C,Munnich A,Lyonnet Sdoi
10.1093/hmg/5.3.355subject
Has Abstractpub_date
1996-03-01 00:00:00pages
355-7issue
3eissn
0964-6906issn
1460-2083pii
5d0384journal_volume
5pub_type
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