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SHR Neuro Krebs Kardio Lipid

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.
Mutations in endothelin 1 cause recessive auriculocondylar syndrome and dominant isolated question-mark ears.
Am J Hum Genet. 2013; 93(6):1118-1125 (- Case Report) [OPEN ACCESS]
Web of Science PubMed PUBMED Central FullText FullText_MUG


Autor/innen der Med Uni Graz:
Kroisel Peter

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Number of Figures: 3
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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.
Find related publications in this database (using NLM MeSH Indexing)
Amino Acid Sequence -
Amino Acid Substitution -
DNA Mutational Analysis -
Ear - abnormalities
Ear Diseases - diagnosis
Endothelin-1 - genetics
Female -
Genes, Dominant -
Genes, Recessive -
Genotype -
Humans -
Male -
Molecular Sequence Data -
Mutation -
Pedigree -
Phenotype -
Sequence Alignment -
Signal Transduction -

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