Contributions of PHOX2B in the pathogenesis of Hirschsprung disease.

Autor: Raquel María Fernández, Yves Mathieu, Berta Luzón-Toro, Rocío Núñez-Torres, Antonio González-Meneses, Guillermo Antiñolo, Jeanne Amiel, Salud Borrego
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: PLoS ONE, Vol 8, Iss 1, p e54043 (2013)
Druh dokumentu: article
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0054043
Popis: Hirschsprung disease (HSCR) is a congenital malformation of the hindgut resulting from a disruption of neural crest cell migration during embryonic development. It has a complex genetic aetiology with several genes involved in its pathogenesis. PHOX2B plays a key function in the development of neural crest derivatives, and heterozygous mutations cause a complex dysautonomia associating HSCR, Congenital Central Hypoventilation Syndrome (CCHS) and neuroblastoma (NB) in various combinations. In order to determine the role of PHOX2B in isolated HSCR, we performed a mutational screening in a cohort of 207 Spanish HSCR patients. Our most relevant finding has been the identification of a de novo and novel deletion (c.393_410del18) in a patient with HSCR. Results of in silico and functional assays support its pathogenic effect related to HSCR. Therefore our results support that PHOX2B loss-of-function is a rare cause of HSCR phenotype.
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