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NEK1 and DYNC2H1 are both involved in short rib polydactyly Majewski type but not in Beemer Langer cases

Identifieur interne : 005533 ( Main/Exploration ); précédent : 005532; suivant : 005534

NEK1 and DYNC2H1 are both involved in short rib polydactyly Majewski type but not in Beemer Langer cases

Auteurs : Joyce El Hokayem [France] ; Céline Huber [France] ; Adeline Couvé [France] ; Jacqueline Aziza [France] ; Geneviève Baujat [France] ; Raymonde Bouvier [France] ; Denise P. Cavalcanti [Brésil] ; Felicity A. Collins [Australie] ; Marie-Pierre Cordier [France] ; Anne-Lise Delezoide [France] ; Marie Gonzales [France] ; Diana Johnson [Royaume-Uni] ; Martine Le Merrer [France] ; Annie Levy-Mozziconacci [France] ; Philippe Loget [France] ; Dominique Martin-Coignard [France] ; Jelena Martinovic ; Geert R. Mortier [Belgique] ; Marie-José Perez [France] ; Joëlle Roume [France] ; Gioacchino Scarano [Italie] ; Arnold Munnich [France] ; Valérie Cormier-Daire [France]

Source :

RBID : ISTEX:AD326BD5055068E4006D616F76F15FF0C7398FB3

Descripteurs français

English descriptors

Abstract

Background The lethal short rib polydactyly syndromes (SRP type I–IV) are characterised by notably short ribs, short limbs, polydactyly, multiple anomalies of major organs, and autosomal recessive mode of inheritance. Among them, SRP type II (Majewski; MIM 263520) is characterised by short ovoid tibiae or tibial agenesis and is radiographically closely related to SRP type IV (Beemer-Langer; MIM 269860) which is distinguished by bowed radii and ulnae and relatively well tubulated tibiae. NEK1 mutations have been recently identified in SRP type II. Double heterozygosity for mutations in both NEK1 and DYNC2H1 in one SRP type II case supported possible digenic diallelic inheritance. Methods The aim of this study was to screen DYNC2H1 and NEK1 in 13 SRP type II cases and seven SRP type IV cases. It was not possible to screen DYNC2H1 in two patients due to insufficient amount of DNA. Results The study identified homozygous NEK1 mutations in 5/13 SRP type II and compound heterozygous DYNC2H1 mutations in 4/12 cases. Finally, NEK1 and DYNC2H1 were excluded in 3/12 SRP type II and in all SRP type IV cases. The main difference between the mutation positive SRP type II group and the mutation negative SRP type II group was the presence of holoprosencephaly and polymycrogyria in the mutation negative group. Conclusion This study confirms that NEK1 is one gene causing SRP type II but also reports mutations in DYNC2H1, expanding the phenotypic spectrum of DYNC2H1 mutations. The exclusion of NEK1 and DYNC2H1 in 3/12 SRP type II and in all SRP type IV cases further support genetic heterogeneity.

Url:
DOI: 10.1136/jmedgenet-2011-100717


Affiliations:


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Le document en format XML

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<term>Genetics</term>
<term>Gingival hamartoma</term>
<term>Hamartoma</term>
<term>Heart defect</term>
<term>Homozygous state</term>
<term>Hopital</term>
<term>Hopital necker</term>
<term>Intestinal malrotation</term>
<term>Kidney cysts</term>
<term>Kinase</term>
<term>Lobulated tongue</term>
<term>Locus</term>
<term>Malformed epiglottis</term>
<term>Malrotation</term>
<term>Medical genetics</term>
<term>Minor differences</term>
<term>Missense</term>
<term>Missense mutation</term>
<term>Missense mutations</term>
<term>Molecular screening</term>
<term>Mutation</term>
<term>Narrow thorax</term>
<term>Nek1</term>
<term>Nek1 locus</term>
<term>Nek1 mutations</term>
<term>Nonsense mutation</term>
<term>Other features</term>
<term>Ovoid</term>
<term>Ovoid tibia</term>
<term>Ovoid tibiae</term>
<term>Polydactyly</term>
<term>Polydactyly syndrome</term>
<term>Polysyndactyly</term>
<term>Postaxial</term>
<term>Postaxial polydactyly</term>
<term>Postaxial polysyndactyly</term>
<term>Preaxial postaxial</term>
<term>Prediction programme</term>
<term>Radiological features</term>
<term>Recurrent sibs</term>
<term>Regions encoding</term>
<term>Renal cysts</term>
<term>Retrognathia</term>
<term>Short ribs</term>
<term>Short syndrome</term>
<term>Short tibia</term>
<term>Skeletal manifestations</term>
<term>Smooth ends</term>
<term>Sorbonne paris</term>
<term>Syndrome</term>
<term>Tibia</term>
<term>Tibia agenesis</term>
<term>Tibial agenesis</term>
<term>Type cases</term>
<term>Type ieiv</term>
<term>Universite paris descartes</term>
<term>Unknown preaxial postaxial</term>
<term>Week gestation</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en">
<term>Abnormality</term>
<term>Agenesis</term>
<term>Ciliopathy spectrum</term>
<term>Cleft ovoid radii</term>
<term>Clinical details</term>
<term>Coding exons</term>
<term>Common mesenterium</term>
<term>Compound heterozygosity</term>
<term>Consanguineous</term>
<term>Consanguineous families</term>
<term>Control chromosomes</term>
<term>Corpus callosum agenesis</term>
<term>Cyst</term>
<term>Cytologie pathologiques</term>
<term>Damaging role</term>
<term>Diagnosis criteria</term>
<term>Frameshift mutation</term>
<term>France france</term>
<term>Genet</term>
<term>Genetics</term>
<term>Gingival hamartoma</term>
<term>Hamartoma</term>
<term>Heart defect</term>
<term>Homozygous state</term>
<term>Hopital</term>
<term>Hopital necker</term>
<term>Intestinal malrotation</term>
<term>Kidney cysts</term>
<term>Kinase</term>
<term>Lobulated tongue</term>
<term>Locus</term>
<term>Malformed epiglottis</term>
<term>Malrotation</term>
<term>Medical genetics</term>
<term>Minor differences</term>
<term>Missense</term>
<term>Missense mutation</term>
<term>Missense mutations</term>
<term>Molecular screening</term>
<term>Mutation</term>
<term>Narrow thorax</term>
<term>Nek1</term>
<term>Nek1 locus</term>
<term>Nek1 mutations</term>
<term>Nonsense mutation</term>
<term>Other features</term>
<term>Ovoid</term>
<term>Ovoid tibia</term>
<term>Ovoid tibiae</term>
<term>Polydactyly</term>
<term>Polydactyly syndrome</term>
<term>Polysyndactyly</term>
<term>Postaxial</term>
<term>Postaxial polydactyly</term>
<term>Postaxial polysyndactyly</term>
<term>Preaxial postaxial</term>
<term>Prediction programme</term>
<term>Radiological features</term>
<term>Recurrent sibs</term>
<term>Regions encoding</term>
<term>Renal cysts</term>
<term>Retrognathia</term>
<term>Short ribs</term>
<term>Short syndrome</term>
<term>Short tibia</term>
<term>Skeletal manifestations</term>
<term>Smooth ends</term>
<term>Sorbonne paris</term>
<term>Syndrome</term>
<term>Tibia</term>
<term>Tibia agenesis</term>
<term>Tibial agenesis</term>
<term>Type cases</term>
<term>Type ieiv</term>
<term>Universite paris descartes</term>
<term>Unknown preaxial postaxial</term>
<term>Week gestation</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr">
<term>Génétique</term>
</keywords>
</textClass>
<langUsage>
<language ident="en">en</language>
</langUsage>
</profileDesc>
</teiHeader>
<front>
<div type="abstract">Background The lethal short rib polydactyly syndromes (SRP type I–IV) are characterised by notably short ribs, short limbs, polydactyly, multiple anomalies of major organs, and autosomal recessive mode of inheritance. Among them, SRP type II (Majewski; MIM 263520) is characterised by short ovoid tibiae or tibial agenesis and is radiographically closely related to SRP type IV (Beemer-Langer; MIM 269860) which is distinguished by bowed radii and ulnae and relatively well tubulated tibiae. NEK1 mutations have been recently identified in SRP type II. Double heterozygosity for mutations in both NEK1 and DYNC2H1 in one SRP type II case supported possible digenic diallelic inheritance. Methods The aim of this study was to screen DYNC2H1 and NEK1 in 13 SRP type II cases and seven SRP type IV cases. It was not possible to screen DYNC2H1 in two patients due to insufficient amount of DNA. Results The study identified homozygous NEK1 mutations in 5/13 SRP type II and compound heterozygous DYNC2H1 mutations in 4/12 cases. Finally, NEK1 and DYNC2H1 were excluded in 3/12 SRP type II and in all SRP type IV cases. The main difference between the mutation positive SRP type II group and the mutation negative SRP type II group was the presence of holoprosencephaly and polymycrogyria in the mutation negative group. Conclusion This study confirms that NEK1 is one gene causing SRP type II but also reports mutations in DYNC2H1, expanding the phenotypic spectrum of DYNC2H1 mutations. The exclusion of NEK1 and DYNC2H1 in 3/12 SRP type II and in all SRP type IV cases further support genetic heterogeneity.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Australie</li>
<li>Belgique</li>
<li>Brésil</li>
<li>France</li>
<li>Italie</li>
<li>Royaume-Uni</li>
</country>
<region>
<li>Angleterre</li>
<li>Auvergne-Rhône-Alpes</li>
<li>Languedoc-Roussillon</li>
<li>Midi-Pyrénées</li>
<li>Nouvelle-Galles du Sud</li>
<li>Occitanie (région administrative)</li>
<li>Pays de la Loire</li>
<li>Provence-Alpes-Côte d'Azur</li>
<li>Rhône-Alpes</li>
<li>Région Bretagne</li>
<li>État de São Paulo</li>
<li>Île-de-France</li>
</region>
<settlement>
<li>Le Mans</li>
<li>Lyon</li>
<li>Marseille</li>
<li>Montpellier</li>
<li>Paris</li>
<li>Rennes</li>
<li>Sydney</li>
<li>São Paulo</li>
<li>Toulouse</li>
</settlement>
<orgName>
<li>Université Paris-Descartes</li>
</orgName>
</list>
<tree>
<noCountry>
<name sortKey="Martinovic, Jelena" sort="Martinovic, Jelena" uniqKey="Martinovic J" first="Jelena" last="Martinovic">Jelena Martinovic</name>
</noCountry>
<country name="France">
<region name="Île-de-France">
<name sortKey="El Hokayem, Joyce" sort="El Hokayem, Joyce" uniqKey="El Hokayem J" first="Joyce" last="El Hokayem">Joyce El Hokayem</name>
</region>
<name sortKey="Aziza, Jacqueline" sort="Aziza, Jacqueline" uniqKey="Aziza J" first="Jacqueline" last="Aziza">Jacqueline Aziza</name>
<name sortKey="Baujat, Genevieve" sort="Baujat, Genevieve" uniqKey="Baujat G" first="Geneviève" last="Baujat">Geneviève Baujat</name>
<name sortKey="Bouvier, Raymonde" sort="Bouvier, Raymonde" uniqKey="Bouvier R" first="Raymonde" last="Bouvier">Raymonde Bouvier</name>
<name sortKey="Cordier, Marie Pierre" sort="Cordier, Marie Pierre" uniqKey="Cordier M" first="Marie-Pierre" last="Cordier">Marie-Pierre Cordier</name>
<name sortKey="Cormier Daire, Valerie" sort="Cormier Daire, Valerie" uniqKey="Cormier Daire V" first="Valérie" last="Cormier-Daire">Valérie Cormier-Daire</name>
<name sortKey="Cormier Daire, Valerie" sort="Cormier Daire, Valerie" uniqKey="Cormier Daire V" first="Valérie" last="Cormier-Daire">Valérie Cormier-Daire</name>
<name sortKey="Couve, Adeline" sort="Couve, Adeline" uniqKey="Couve A" first="Adeline" last="Couvé">Adeline Couvé</name>
<name sortKey="Delezoide, Anne Lise" sort="Delezoide, Anne Lise" uniqKey="Delezoide A" first="Anne-Lise" last="Delezoide">Anne-Lise Delezoide</name>
<name sortKey="Gonzales, Marie" sort="Gonzales, Marie" uniqKey="Gonzales M" first="Marie" last="Gonzales">Marie Gonzales</name>
<name sortKey="Huber, Celine" sort="Huber, Celine" uniqKey="Huber C" first="Céline" last="Huber">Céline Huber</name>
<name sortKey="Le Merrer, Martine" sort="Le Merrer, Martine" uniqKey="Le Merrer M" first="Martine" last="Le Merrer">Martine Le Merrer</name>
<name sortKey="Levy Mozziconacci, Annie" sort="Levy Mozziconacci, Annie" uniqKey="Levy Mozziconacci A" first="Annie" last="Levy-Mozziconacci">Annie Levy-Mozziconacci</name>
<name sortKey="Loget, Philippe" sort="Loget, Philippe" uniqKey="Loget P" first="Philippe" last="Loget">Philippe Loget</name>
<name sortKey="Martin Coignard, Dominique" sort="Martin Coignard, Dominique" uniqKey="Martin Coignard D" first="Dominique" last="Martin-Coignard">Dominique Martin-Coignard</name>
<name sortKey="Munnich, Arnold" sort="Munnich, Arnold" uniqKey="Munnich A" first="Arnold" last="Munnich">Arnold Munnich</name>
<name sortKey="Perez, Marie Jose" sort="Perez, Marie Jose" uniqKey="Perez M" first="Marie-José" last="Perez">Marie-José Perez</name>
<name sortKey="Roume, Joelle" sort="Roume, Joelle" uniqKey="Roume J" first="Joëlle" last="Roume">Joëlle Roume</name>
</country>
<country name="Brésil">
<region name="État de São Paulo">
<name sortKey="Cavalcanti, Denise P" sort="Cavalcanti, Denise P" uniqKey="Cavalcanti D" first="Denise P" last="Cavalcanti">Denise P. Cavalcanti</name>
</region>
</country>
<country name="Australie">
<region name="Nouvelle-Galles du Sud">
<name sortKey="Collins, Felicity A" sort="Collins, Felicity A" uniqKey="Collins F" first="Felicity A" last="Collins">Felicity A. Collins</name>
</region>
</country>
<country name="Royaume-Uni">
<region name="Angleterre">
<name sortKey="Johnson, Diana" sort="Johnson, Diana" uniqKey="Johnson D" first="Diana" last="Johnson">Diana Johnson</name>
</region>
</country>
<country name="Belgique">
<noRegion>
<name sortKey="Mortier, Geert R" sort="Mortier, Geert R" uniqKey="Mortier G" first="Geert R" last="Mortier">Geert R. Mortier</name>
</noRegion>
</country>
<country name="Italie">
<noRegion>
<name sortKey="Scarano, Gioacchino" sort="Scarano, Gioacchino" uniqKey="Scarano G" first="Gioacchino" last="Scarano">Gioacchino Scarano</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

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