Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\24268655
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Hum+Genet
2013 ; 93
(6
): 1118-25
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Mutations in endothelin 1 cause recessive auriculocondylar syndrome and dominant
isolated question-mark ears
#MMPMID24268655
Gordon CT
; Petit F
; Kroisel PM
; Jakobsen L
; Zechi-Ceide RM
; Oufadem M
; Bole-Feysot C
; Pruvost S
; Masson C
; Tores F
; Hieu T
; Nitschké P
; Lindholm P
; Pellerin P
; Guion-Almeida ML
; Kokitsu-Nakata NM
; Vendramini-Pittoli S
; Munnich A
; Lyonnet S
; Holder-Espinasse M
; Amiel J
Am J Hum Genet
2013[Dec]; 93
(6
): 1118-25
PMID24268655
show ga
Auriculocondylar syndrome (ACS) is a rare craniofacial disorder with mandibular
hypoplasia and question-mark ears (QMEs) as major features. QMEs, consisting of a
specific defect at the lobe-helix junction, can also occur as an isolated
anomaly. Studies in animal models have indicated the essential role of endothelin
1 (EDN1) signaling through the endothelin receptor type A (EDNRA) in patterning
the mandibular portion of the first pharyngeal arch. Mutations in the genes
coding for phospholipase C, beta 4 (PLCB4) and guanine nucleotide binding protein
(G protein), alpha inhibiting activity polypeptide 3 (GNAI3), predicted to
function as signal transducers downstream of EDNRA, have recently been reported
in ACS. By whole-exome sequencing (WES), we identified a homozygous substitution
in a furin cleavage site of the EDN1 proprotein in ACS-affected siblings born to
consanguineous parents. WES of two cases with vertical transmission of isolated
QMEs revealed a stop mutation in EDN1 in one family and a missense substitution
of a highly conserved residue in the mature EDN1 peptide in the other. Targeted
sequencing of EDN1 in an ACS individual with related parents identified a fourth,
homozygous mutation falling close to the site of cleavage by
endothelin-converting enzyme. The different modes of inheritance suggest that the
degree of residual EDN1 activity differs depending on the mutation. These
findings provide further support for the hypothesis that ACS and QMEs are
uniquely caused by disruption of the EDN1-EDNRA signaling pathway.