当前位置： SCI文献检索 > AMERICAN JOURNAL OF HUMAN GENETICS期刊下所有文献 > Familial deafness, congenital heart defects, and posterior embryotoxon caused by cysteine substitution in the first epidermal-growth-factor-like domain of jagged 1.

Familial deafness, congenital heart defects, and posterior embryotoxon caused by cysteine substitution in the first epidermal-growth-factor-like domain of jagged 1.

Abstract：

:In the present study, we report a kindred with hearing loss, congenital heart defects, and posterior embryotoxon, segregating as autosomal dominant traits. Six of seven available affected patients manifested mild-to-severe combined hearing loss, predominantly affecting middle frequencies. Two patients were diagnosed with vestibular pathology. All patients had congenital heart defects, including tetralogy of Fallot, ventricular septal defect, or isolated peripheral pulmonic stenosis. No individual in this family met diagnostic criteria for any previously described clinical syndrome. A candidate-gene approach was undertaken and culminated in the identification of a novel Jagged 1 (JAG1) missense mutation (C234Y) in the first cysteine of the first epidermal-growth-factor-like repeat domain of the protein. JAG1 is a cell-surface ligand in the Notch signaling pathway. Mutations in JAG1 have been identified in patients with Alagille syndrome. Our findings revealed a unique phenotype with highly penetrant deafness, posterior embryotoxon, and congenital heart defects but with variable expressivity in a large kindred, which demonstrates that mutation in JAG1 can cause hearing loss.

journal_name

Am J Hum Genet

journal_title

American journal of human genetics

authors

Le Caignec C,Lefevre M,Schott JJ,Chaventre A,Gayet M,Calais C,Moisan JP

doi

10.1086/341327

subject

Has Abstract

pub_date

2002-07-01 00:00:00

pages

180-6

issue

1

eissn

0002-9297

issn

1537-6605

pii

S0002-9297(07)60048-2

journal_volume

71

pub_type

杂志文章

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