Serveur d'exploration sur les relations entre la France et l'Australie

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New insights into the pathogenesis of beckwith–wiedemann and silver–russell syndromes: Contribution of small copy number variations to 11p15 imprinting defects

Identifieur interne : 002D42 ( Istex/Curation ); précédent : 002D41; suivant : 002D43

New insights into the pathogenesis of beckwith–wiedemann and silver–russell syndromes: Contribution of small copy number variations to 11p15 imprinting defects

Auteurs : Julie Demars [Australie] ; Sylvie Rossignol [France] ; Irène Netchine [France] ; Kai Syin Lee [Australie] ; Mansur Shmela [Australie] ; Laurence Faivre [France] ; Jacques Weill [France] ; Sylvie Odent [France] ; Salah Azzi [France] ; Patrick Callier [France] ; Josette Lucas [France] ; Christèle Dubourg [France] ; Joris Andrieux [France] ; Yves Le Bouc [France] ; Assam El-Osta [Australie] ; Christine Gicquel [Australie]

Source :

RBID : ISTEX:F105AC2486086418EB306E24BE5AF68A05A3FB8F

Descripteurs français

English descriptors

Abstract

The imprinted 11p15 region is organized in two domains, each of them under the control of its own imprinting control region (ICR1 for the IGF2/H19 domain and ICR2 for the KCNQ1OT1/CDKN1C domain). Disruption of 11p15 imprinting results in two fetal growth disorders with opposite phenotypes: the Beckwith–Wiedemann (BWS) and the Silver–Russell (SRS) syndromes. Various 11p15 genetic and epigenetic defects have been demonstrated in BWS and SRS. Among them, isolated DNA methylation defects account for approximately 60% of patients. To investigate whether cryptic copy number variations (CNVs) involving only part of one of the two imprinted domains account for 11p15 isolated DNA methylation defects, we designed a single nucleotide polymorphism array covering the whole 11p15 imprinted region and genotyped 185 SRS or BWS cases with loss or gain of DNA methylation at either ICR1 or ICR2. We describe herein novel small gain and loss CNVs in six BWS or SRS patients, including maternally inherited cis‐duplications involving only part of one of the two imprinted domains. We also show that ICR2 deletions do not account for BWS with ICR2 loss of methylation and that uniparental isodisomy involving only one of the two imprinted domains is not a mechanism for SRS or BWS. Hum Mutat 32:1171–1182, 2011. ©2011 Wiley‐Liss, Inc.

Url:
DOI: 10.1002/humu.21558

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ISTEX:F105AC2486086418EB306E24BE5AF68A05A3FB8F

Le document en format XML

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<name sortKey="Callier, Patrick" sort="Callier, Patrick" uniqKey="Callier P" first="Patrick" last="Callier">Patrick Callier</name>
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<name sortKey="Andrieux, Joris" sort="Andrieux, Joris" uniqKey="Andrieux J" first="Joris" last="Andrieux">Joris Andrieux</name>
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<name sortKey="Le Bouc, Yves" sort="Le Bouc, Yves" uniqKey="Le Bouc Y" first="Yves" last="Le Bouc">Yves Le Bouc</name>
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<name sortKey="El Sta, Assam" sort="El Sta, Assam" uniqKey="El Sta A" first="Assam" last="El-Osta">Assam El-Osta</name>
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<name sortKey="Gicquel, Christine" sort="Gicquel, Christine" uniqKey="Gicquel C" first="Christine" last="Gicquel">Christine Gicquel</name>
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<mods:affiliation>Correspondence address: Epigenetics in Human Health and Disease, Baker IDI Heart and Diabetes Institute, 75 Commercial Road, Melbourne, 3004 VIC, Australia.</mods:affiliation>
<country xml:lang="fr">Australie</country>
<wicri:regionArea>Correspondence address: Epigenetics in Human Health and Disease, Baker IDI Heart and Diabetes Institute, 75 Commercial Road, Melbourne, 3004 VIC</wicri:regionArea>
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<title level="j" type="main">Human Mutation</title>
<title level="j" type="alt">HUMAN MUTATION</title>
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<term>Allele</term>
<term>Allele frequency</term>
<term>Allele peak</term>
<term>Azzi</term>
<term>Bayes factor</term>
<term>Birth weight</term>
<term>Bliek</term>
<term>Body asymmetry</term>
<term>Bouc</term>
<term>Breakpoint</term>
<term>Centromeric</term>
<term>Centromeric breakpoint</term>
<term>Chromosome</term>
<term>Cnvs</term>
<term>Control subjects</term>
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<term>Ctcf binding sites</term>
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<term>Deletion</term>
<term>Demars</term>
<term>Developmental delay</term>
<term>Diabetes institute</term>
<term>Duplication</term>
<term>Familial</term>
<term>Familial history</term>
<term>Fetal</term>
<term>Fetal growth disorders</term>
<term>Fish analysis</term>
<term>Genet</term>
<term>Genetic defects</term>
<term>Genomic</term>
<term>Genomic imprinting</term>
<term>Gicquel</term>
<term>Graphical overview</term>
<term>Growth disorders</term>
<term>Homozygosity</term>
<term>Human mutation</term>
<term>Hybridization</term>
<term>Icr1</term>
<term>Icr1 deletions</term>
<term>Icr1 gain</term>
<term>Icr1 loss</term>
<term>Icr2</term>
<term>Icr2 deletions</term>
<term>Icr2 loss</term>
<term>Igf2</term>
<term>Imprinting</term>
<term>Imprinting control region</term>
<term>Large series</term>
<term>Locus</term>
<term>Maternal allele</term>
<term>Maternal grandfather</term>
<term>Maternal grandmother</term>
<term>Maternally</term>
<term>Methylated</term>
<term>Methylation</term>
<term>Methylation analysis</term>
<term>Methylation defect</term>
<term>Methylation defects</term>
<term>Methylation index</term>
<term>Methylation status</term>
<term>Mutation</term>
<term>Parental</term>
<term>Parental alleles</term>
<term>Parental origin</term>
<term>Partial gain</term>
<term>Paternal</term>
<term>Pericentric</term>
<term>Pericentric inversion</term>
<term>Phenotype</term>
<term>Polymorphism</term>
<term>Postnatal</term>
<term>Postnatal growth retardation</term>
<term>Quantisnp</term>
<term>Quantisnp software</term>
<term>Reproductive technology</term>
<term>Rossignol</term>
<term>Russo</term>
<term>Segmental upids</term>
<term>Sequencing</term>
<term>Snp</term>
<term>Software</term>
<term>Sparago</term>
<term>Supp</term>
<term>Syndrome</term>
<term>Telomeric</term>
<term>Uniparental disomy</term>
<term>Whole domain</term>
<term>Wilms</term>
<term>Wilms tumors</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en">
<term>Allele</term>
<term>Allele frequency</term>
<term>Allele peak</term>
<term>Azzi</term>
<term>Bayes factor</term>
<term>Birth weight</term>
<term>Bliek</term>
<term>Body asymmetry</term>
<term>Bouc</term>
<term>Breakpoint</term>
<term>Centromeric</term>
<term>Centromeric breakpoint</term>
<term>Chromosome</term>
<term>Cnvs</term>
<term>Control subjects</term>
<term>Ctcf</term>
<term>Ctcf binding sites</term>
<term>Defect</term>
<term>Deletion</term>
<term>Demars</term>
<term>Developmental delay</term>
<term>Diabetes institute</term>
<term>Duplication</term>
<term>Familial</term>
<term>Familial history</term>
<term>Fetal</term>
<term>Fetal growth disorders</term>
<term>Fish analysis</term>
<term>Genet</term>
<term>Genetic defects</term>
<term>Genomic</term>
<term>Genomic imprinting</term>
<term>Gicquel</term>
<term>Graphical overview</term>
<term>Growth disorders</term>
<term>Homozygosity</term>
<term>Human mutation</term>
<term>Hybridization</term>
<term>Icr1</term>
<term>Icr1 deletions</term>
<term>Icr1 gain</term>
<term>Icr1 loss</term>
<term>Icr2</term>
<term>Icr2 deletions</term>
<term>Icr2 loss</term>
<term>Igf2</term>
<term>Imprinting</term>
<term>Imprinting control region</term>
<term>Large series</term>
<term>Locus</term>
<term>Maternal allele</term>
<term>Maternal grandfather</term>
<term>Maternal grandmother</term>
<term>Maternally</term>
<term>Methylated</term>
<term>Methylation</term>
<term>Methylation analysis</term>
<term>Methylation defect</term>
<term>Methylation defects</term>
<term>Methylation index</term>
<term>Methylation status</term>
<term>Mutation</term>
<term>Parental</term>
<term>Parental alleles</term>
<term>Parental origin</term>
<term>Partial gain</term>
<term>Paternal</term>
<term>Pericentric</term>
<term>Pericentric inversion</term>
<term>Phenotype</term>
<term>Polymorphism</term>
<term>Postnatal</term>
<term>Postnatal growth retardation</term>
<term>Quantisnp</term>
<term>Quantisnp software</term>
<term>Reproductive technology</term>
<term>Rossignol</term>
<term>Russo</term>
<term>Segmental upids</term>
<term>Sequencing</term>
<term>Snp</term>
<term>Software</term>
<term>Sparago</term>
<term>Supp</term>
<term>Syndrome</term>
<term>Telomeric</term>
<term>Uniparental disomy</term>
<term>Whole domain</term>
<term>Wilms</term>
<term>Wilms tumors</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr">
<term>Logiciel</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">The imprinted 11p15 region is organized in two domains, each of them under the control of its own imprinting control region (ICR1 for the IGF2/H19 domain and ICR2 for the KCNQ1OT1/CDKN1C domain). Disruption of 11p15 imprinting results in two fetal growth disorders with opposite phenotypes: the Beckwith–Wiedemann (BWS) and the Silver–Russell (SRS) syndromes. Various 11p15 genetic and epigenetic defects have been demonstrated in BWS and SRS. Among them, isolated DNA methylation defects account for approximately 60% of patients. To investigate whether cryptic copy number variations (CNVs) involving only part of one of the two imprinted domains account for 11p15 isolated DNA methylation defects, we designed a single nucleotide polymorphism array covering the whole 11p15 imprinted region and genotyped 185 SRS or BWS cases with loss or gain of DNA methylation at either ICR1 or ICR2. We describe herein novel small gain and loss CNVs in six BWS or SRS patients, including maternally inherited cis‐duplications involving only part of one of the two imprinted domains. We also show that ICR2 deletions do not account for BWS with ICR2 loss of methylation and that uniparental isodisomy involving only one of the two imprinted domains is not a mechanism for SRS or BWS. Hum Mutat 32:1171–1182, 2011. ©2011 Wiley‐Liss, Inc.</div>
</front>
</TEI>
</record>

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