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Mutations in ANO3 cause dominant craniocervical dystonia: ion channel implicated in pathogenesis.

Charlesworth, G; Plagnol, V; Holmström, KM; Bras, J; Sheerin, UM; Preza, E; Rubio-Agusti, I; ... Wood, NW; + view all (2012) Mutations in ANO3 cause dominant craniocervical dystonia: ion channel implicated in pathogenesis. The American Journal of Human Genetics , 91 (6) 1041 - 1050. 10.1016/j.ajhg.2012.10.024. Green open access

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Abstract

In this study, we combined linkage analysis with whole-exome sequencing of two individuals to identify candidate causal variants in a moderately-sized UK kindred exhibiting autosomal-dominant inheritance of craniocervical dystonia. Subsequent screening of these candidate causal variants in a large number of familial and sporadic cases of cervical dystonia led to the identification of a total of six putatively pathogenic mutations in ANO3, a gene encoding a predicted Ca(2+)-gated chloride channel that we show to be highly expressed in the striatum. Functional studies using Ca(2+) imaging in case and control fibroblasts demonstrated clear abnormalities in endoplasmic-reticulum-dependent Ca(2+) signaling. We conclude that mutations in ANO3 are a cause of autosomal-dominant craniocervical dystonia. The locus DYT23 has been reserved as a synonym for this gene. The implication of an ion channel in the pathogenesis of dystonia provides insights into an alternative mechanism that opens fresh avenues for further research.

Type: Article
Title: Mutations in ANO3 cause dominant craniocervical dystonia: ion channel implicated in pathogenesis.
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.ajhg.2012.10.024
Publisher version: http://dx.doi.org/10.1016/j.ajhg.2012.10.024
Language: English
Additional information: This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. PMCID: PMC3516598
Keywords: Amino Acid Sequence, Base Sequence, Calcium Signaling, Chloride Channels, Corpus Striatum, Dystonia, Endoplasmic Reticulum, Exome, Female, Fibroblasts, Gene Expression Regulation, Genes, Dominant, Genetic Linkage, High-Throughput Nucleotide Sequencing, Humans, Ion Channels, Male, Molecular Sequence Data, Mutation, Pedigree, Phenotype, Sequence Alignment, Torticollis
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Clinical and Movement Neurosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Department of Neuromuscular Diseases
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment
URI: http://discovery.ucl.ac.uk/id/eprint/1381600
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