Rapid identification of mutations in GJC2 in primary lymphoedema using whole exome sequencing combined with linkage analysis with delineation of the phenotype
Identifieur interne : 005467 ( Main/Merge ); précédent : 005466; suivant : 005468Rapid identification of mutations in GJC2 in primary lymphoedema using whole exome sequencing combined with linkage analysis with delineation of the phenotype
Auteurs : Pia Ostergaard [Royaume-Uni] ; Michael A. Simpson [Royaume-Uni] ; Glen Brice [Royaume-Uni] ; Sahar Mansour [Royaume-Uni] ; Fiona C. Connell [Royaume-Uni] ; Alexandros Onoufriadis [Royaume-Uni] ; Anne H. Child [Royaume-Uni] ; Jae Hwang [Royaume-Uni] ; Kamini Kalidas [Royaume-Uni] ; Peter S. Mortimer [Royaume-Uni] ; Richard Trembath [Royaume-Uni] ; Steve Jeffery [Royaume-Uni]Source :
- Journal of medical genetics [ 0022-2593 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Wicri :
English descriptors
- KwdEn :
Abstract
Background Primary lymphoedema describes a chronic, frequently progressive, failure of lymphatic drainage. This disorder is frequently genetic in origin, and a multigenerational family in which eight individuals developed postnatal lymphoedema of all four limbs was ascertained from the joint Lymphoedema/Genetic clinic at St George's Hospital. Methods Linkage analysis was used to determine a locus, and exome sequencing was employed to look for causative variants. Results Linkage analysis revealed cosegregation of a 16.1 Mb haplotype on chromosome 1 q42 that contained 173 known or predicted genes. Whole exome sequencing in a single affected individual was undertaken, and the search for the causative variant was focused to within the linkage interval. This approach revealed two novel non-synonymous single nucleotide substitutions within the chromosome 1 locus, in NVL and GJC2. NVL and GJC2 were sequenced in an additional cohort of individuals with a similar phenotype and non- synonymous variants were found in GJC2 in four additional families. Conclusion This report demonstrates the power of exome sequencing efficiently applied to a traditional positional cloning pipeline in disease gene discovery, and suggests that the phenotype produced by GJC2 mutations is predominantly one of 4 limb lymphoedema.
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<term>Identification</term>
<term>Lymphedema</term>
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<term>Nucleotide sequence</term>
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<term>Identification</term>
<term>Mutation</term>
<term>Séquençage</term>
<term>Séquence nucléotide</term>
<term>Liaison génétique</term>
<term>Pathogénie</term>
<term>Déterminisme génétique</term>
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<front><div type="abstract" xml:lang="en">Background Primary lymphoedema describes a chronic, frequently progressive, failure of lymphatic drainage. This disorder is frequently genetic in origin, and a multigenerational family in which eight individuals developed postnatal lymphoedema of all four limbs was ascertained from the joint Lymphoedema/Genetic clinic at St George's Hospital. Methods Linkage analysis was used to determine a locus, and exome sequencing was employed to look for causative variants. Results Linkage analysis revealed cosegregation of a 16.1 Mb haplotype on chromosome 1 q42 that contained 173 known or predicted genes. Whole exome sequencing in a single affected individual was undertaken, and the search for the causative variant was focused to within the linkage interval. This approach revealed two novel non-synonymous single nucleotide substitutions within the chromosome 1 locus, in NVL and GJC2. NVL and GJC2 were sequenced in an additional cohort of individuals with a similar phenotype and non- synonymous variants were found in GJC2 in four additional families. Conclusion This report demonstrates the power of exome sequencing efficiently applied to a traditional positional cloning pipeline in disease gene discovery, and suggests that the phenotype produced by GJC2 mutations is predominantly one of 4 limb lymphoedema.</div>
</front>
</TEI>
<affiliations><list><country><li>Royaume-Uni</li>
</country>
<region><li>Angleterre</li>
<li>Grand Londres</li>
</region>
<settlement><li>Londres</li>
</settlement>
<orgName><li>Université de Londres</li>
</orgName>
</list>
<tree><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Ostergaard, Pia" sort="Ostergaard, Pia" uniqKey="Ostergaard P" first="Pia" last="Ostergaard">Pia Ostergaard</name>
</region>
<name sortKey="Brice, Glen" sort="Brice, Glen" uniqKey="Brice G" first="Glen" last="Brice">Glen Brice</name>
<name sortKey="Child, Anne H" sort="Child, Anne H" uniqKey="Child A" first="Anne H." last="Child">Anne H. Child</name>
<name sortKey="Connell, Fiona C" sort="Connell, Fiona C" uniqKey="Connell F" first="Fiona C." last="Connell">Fiona C. Connell</name>
<name sortKey="Hwang, Jae" sort="Hwang, Jae" uniqKey="Hwang J" first="Jae" last="Hwang">Jae Hwang</name>
<name sortKey="Jeffery, Steve" sort="Jeffery, Steve" uniqKey="Jeffery S" first="Steve" last="Jeffery">Steve Jeffery</name>
<name sortKey="Kalidas, Kamini" sort="Kalidas, Kamini" uniqKey="Kalidas K" first="Kamini" last="Kalidas">Kamini Kalidas</name>
<name sortKey="Mansour, Sahar" sort="Mansour, Sahar" uniqKey="Mansour S" first="Sahar" last="Mansour">Sahar Mansour</name>
<name sortKey="Mortimer, Peter S" sort="Mortimer, Peter S" uniqKey="Mortimer P" first="Peter S." last="Mortimer">Peter S. Mortimer</name>
<name sortKey="Onoufriadis, Alexandros" sort="Onoufriadis, Alexandros" uniqKey="Onoufriadis A" first="Alexandros" last="Onoufriadis">Alexandros Onoufriadis</name>
<name sortKey="Simpson, Michael A" sort="Simpson, Michael A" uniqKey="Simpson M" first="Michael A." last="Simpson">Michael A. Simpson</name>
<name sortKey="Trembath, Richard" sort="Trembath, Richard" uniqKey="Trembath R" first="Richard" last="Trembath">Richard Trembath</name>
</country>
</tree>
</affiliations>
</record>
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