Search

Your search keyword '"Jean-Benoît Courcet"' showing total 7 results
Start Over Author "Jean-Benoît Courcet" Topic female
7 results on '"Jean-Benoît Courcet"'

1. Autosomal-recessive SASH1 variants associated with a new genodermatosis with pigmentation defects, palmoplantar keratoderma and skin carcinoma

Author

Christel Thauvin, Marie Hélène Aubriot-Lorton, Nadège Gigot, Nathalie Marle, Bernard Aral, Laurence Duplomb, Alain Sarasin, Julien Thevenon, Valeria Naim, Jean-Baptiste Rivière, Jean Benoît Courcet, Pierre Vabres, Jamal Eddin Abrid, Mariam Tajir, Laurence Faivre, Emilie Courcet-Degrolard, Siham Chafai Elalaoui, Laurent Martin, Abdelaziz Sefiani, and Yannis Duffourd

Subjects
Adult, Male, Skin Neoplasms, DNA Mutational Analysis, Mutation, Missense, Genes, Recessive, Consanguinity, Biology, Article, Keratoderma, Palmoplantar, Genetics, medicine, Humans, Exome, Genetic Predisposition to Disease, Genetics (clinical), Pigmentation disorder, Skin, Family Health, Siblings, Tumor Suppressor Proteins, Homozygote, Genodermatosis, Sequence Analysis, DNA, Fibroblasts, medicine.disease, Disease gene identification, Hyperpigmentation, Pedigree, Palmoplantar keratoderma, Female, Skin cancer, medicine.symptom, Skin Carcinoma, Pigmentation Disorders
Abstract

SASH1 (SAM and SH3 domain-containing protein 1) is a tumor suppressor gene involved in the tumorigenesis of a spectrum of solid cancers. Heterozygous SASH1 variants are known to cause autosomal-dominant dyschromatosis. Homozygosity mapping and whole-exome sequencing were performed in a consanguineous Moroccan family with two affected siblings presenting an unclassified phenotype associating an abnormal pigmentation pattern (hypo- and hyperpigmented macules of the trunk and face and areas of reticular hypo- and hyperpigmentation of the extremities), alopecia, palmoplantar keratoderma, ungueal dystrophy and recurrent spinocellular carcinoma. We identified a homozygous variant in SASH1 (c.1849G>A; p.Glu617Lys) in both affected individuals. Wound-healing assay showed that the patient's fibroblasts were better able than control fibroblasts to migrate. Following the identification of SASH1 heterozygous variants in dyschromatosis, we used reverse phenotyping to show that autosomal-recessive variants of this gene could be responsible for an overlapping but more complex phenotype that affected skin appendages. SASH1 should be added to the list of genes responsible for autosomal-dominant and -recessive genodermatosis, with no phenotype in heterozygous patients in the recessive form, and to the list of genes responsible for a predisposition to skin cancer.

Published
2014

2. The identification of MAFB mutations in eight patients with multicentric carpo-tarsal osteolysis supports genetic homogeneity but clinical variability

Author

Philippe Koehrer, Cybel Mehawej, Martine Le Merrer, Sylvain Breton, Pierre Quartier, Laurence Faivre, Marion Gérard, Geneviève Baujat, Richard Mouy, Jean-Benoît Courcet, Valérie Cormier-Daire, Isabelle Landru, Morgane Gosselin, and Christiane Mousson

Subjects
Adult, Male, Pathology, medicine.medical_specialty, Osteolysis, Adolescent, MafB Transcription Factor, Mutation, Missense, Disease, Hajdu-Cheney Syndrome, Nephropathy, Genetics, Humans, Medicine, Missense mutation, Exome, Child, Gene, Carpal Bones, Genetics (clinical), Exome sequencing, business.industry, Tarsal Bones, medicine.disease, Tarsal Bone, MAFB, Child, Preschool, Female, business
Abstract

Multicentric carpo-tarsal osteolysis (MCTO) with or without nephropathy is a rare osteolysis disorder beginning in early childhood and involving mainly carpal and tarsal bones. Renal disease appears later in life in the majority of cases and evolves quickly to end stage renal failure. Autosomal dominant (AD) inheritance has been demonstrated, with a high frequency of sporadic cases. Recently, mutations in a highly conserved region of the MAFB gene (v-maf musculoaponeurotic fibrosarcoma oncogene ortholog B) have been identified in MCTO patients by exome sequencing. MafB, known as a regulator of various developmental processes, is essential for osteoclastogenesis and renal development. We report here the molecular screening of MAFB in eight MCTO patients from six families. We identified MAFB mutations in all, including three novel missense mutations clustering within the hot spot mutation region. Among the eight patients, six only presented renal disease. Our report confirms the genetic homogeneity of MCTO and provides data underlying the clinical variability of this disorder.

Published
2013

3. Molecular diagnosis of PIK3CA-related overgrowth spectrum (PROS) in 162 patients and recommendations for genetic testing

Author

Judith St-Onge, Yannis Duffourd, Sandra Whalen, Marjolaine Willems, Anne-Claire Bursztejn, Massimiliano Rossi, Bertrand Isidor, Patrick Edery, Odile Boute, Virginie Carmignac, J. Miquel, Sébastien Barbarot, Daniel Amram, Fanny Morice-Picard, A. Phan, Pierre Vabres, Didier Lacombe, Maryse Bonnière, Jean-Baptiste Rivière, Nadia Bahi-Buisson, Catherine Vincent-Delorme, Thibaud Jouan, Paul Kuentz, Caroline Michot, Renaud Touraine, Jean-Benoît Courcet, Christine Francannet, Marie Vincent, Smail Hadj-Rabia, Valérie Cormier-Daire, Christine Coubes, Cyril Mignot, Nathalie Marle, Jeanne Amiel, Michèle Mathieu-Dramard, Philippe Khau Van Kien, Juliette Mazereeuw-Hautier, Annabel Maruani, Salima El Chehadeh, Geneviève Baujat, Christine Chiaverini, Daphné Lehalle, Arthur Sorlin, Florence Petit, Bruno Delobel, Laurence Faivre, Julien Thevenon, Stéphanie Arpin, Didier Bessis, Damien Haye, David Geneviève, Tania Attié-Bitach, Claire Abasq-Thomas, Jelena Martinovic, Alain Verloes, Christel Thauvin-Robinet, Juliette Albuisson, Marie-Line Jacquemont, Alice Goldenberg, Olivia Boccara, and Ludovic Martin

Subjects
0301 basic medicine, Adult, Male, Pathology, medicine.medical_specialty, Adolescent, Genotype, Class I Phosphatidylinositol 3-Kinases, Prenatal diagnosis, Bioinformatics, medicine.disease_cause, DNA sequencing, 03 medical and health sciences, Young Adult, 0302 clinical medicine, Prenatal Diagnosis, medicine, Humans, Genetic Predisposition to Disease, Genetic Testing, Allele, Child, Genetics (clinical), Alleles, Genetic Association Studies, Growth Disorders, Genetic testing, Mutation, medicine.diagnostic_test, business.industry, Mosaicism, Infant, Newborn, Disease Management, High-Throughput Nucleotide Sequencing, Infant, Sequence Analysis, DNA, Phenotype, 030104 developmental biology, Amino Acid Substitution, Child, Preschool, Allelic heterogeneity, Female, business, 030217 neurology & neurosurgery
Abstract

Postzygotic activating mutations of PIK3CA cause a wide range of mosaic disorders collectively referred to as PIK3CA-related overgrowth spectrum (PROS). We describe the diagnostic yield and characteristics of PIK3CA sequencing in PROS. We performed ultradeep next-generation sequencing (NGS) of PIK3CA in various tissues from 162 patients referred to our clinical laboratory and assessed diagnostic yield by phenotype and tissue tested. We identified disease-causing mutations in 66.7% (108/162) of patients, with mutant allele levels as low as 1%. The diagnostic rate was higher (74%) in syndromic than in isolated cases (35.5%; P = 9.03 × 10−5). We identified 40 different mutations and found strong oncogenic mutations more frequently in patients without brain overgrowth (50.6%) than in those with brain overgrowth (15.2%; P = 0.00055). Mutant allele levels were higher in skin and overgrown tissues than in blood and buccal samples (P = 3.9 × 10−25), regardless of the phenotype. Our data demonstrate the value of ultradeep NGS for molecular diagnosis of PROS, highlight its substantial allelic heterogeneity, and confirm that optimal diagnosis requires fresh skin or surgical samples from affected regions. Our findings may be of value in guiding future recommendations for genetic testing in PROS and other mosaic conditions. Genet Med advance online publication 02 February 2017

Published
2016

4. Compound heterozygous PKHD1 variants cause a wide spectrum of ductal plate malformations

Author

Julien Thevenon, Christel Thauvin-Robinet, Yannis Duffourd, Jean-Baptiste Rivière, Laurent Morisse, Anne Minello, Fabienne Prieur, Nadège Gigot, Boris Guiu, Jean-Pierre Cerceuil, Laurence Faivre, Alain Beurdeley, Daniel Meynard, Denis Massenet, Judith St-Onge, Emmanuel Jacquemin, Claire Vanlemmens, Patrick Hillon, Laurence Michel-Calemard, Jean-Marc Phelip, Christiane Mousson, Flore Lacassin, Jean-Benoît Courcet, Service de pédiatrie (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Service d'Hépato-Gastro-Entérologie (CHU de Dijon), CHU Saint-Etienne, Centre Hospitalier Universitaire de Saint-Etienne (CHU de Saint-Etienne), Agence de Santé des îles Wallis & Futuna, Centre hospitalier territorial Gaston-Bourret [Nouméa], CHU Dijon, Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Service de néphrologie (CHU de Dijon), Service de radiologie et d'Imagerie médicale diagnostique et thérapeutique (CHU de Dijon), Université de Montpellier (UM), Service d'hépato-gastro-entérologie pédiatrique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Bicêtre, and Hospices Civils de Lyon (HCL)

Subjects
Adult, Male, Heterozygote, Caroli disease, Receptors, Cell Surface, PKHD1, Bile Duct Diseases, Biology, Compound heterozygosity, Young Adult, autosomal recessive polycystic kidney disease, Genetics, medicine, Humans, Exome, Genetic Predisposition to Disease, Child, Genetics (clinical), Exome sequencing, Polycystic Kidney, Autosomal Recessive, [SDV.GEN]Life Sciences [q-bio]/Genetics, High-Throughput Nucleotide Sequencing, Heterozygote advantage, Middle Aged, medicine.disease, Prognosis, Major gene, Autosomal Recessive Polycystic Kidney Disease, 3. Good health, Pedigree, Ductal Plate Malformation, Bile Ducts, Intrahepatic, Phenotype, Mutation, ductal plate malformation, Female
Abstract

International audience; Ductal plate malformations (DPM) present with a wide phenotypic spectrum comprising Von Meyenburg complexes (VMC), Caroli disease (CD), Caroli syndrome (CS), and autosomal recessive polycystic kidney disease (ARPKD). Variants in PKHD1 are responsible for ARPKD and CS with a high inter- and intra-familial phenotypic variability. Rare familial cases of CD had been reported and exceptional cases of CD are associated with PKHD1 variants. In a family of three siblings presenting with a wide spectrum of severity of DPM, we performed whole exome sequencing and identified two PKHD1 compound heterozygous variants (c.10444G>A; p.Arg3482Cys and c.5521C>T; p.Glu1841Lys), segregating with the symptoms. Two compound heterozygous PKHD1 variants, including one hypomorphic variant, were identified in two other familial cases of DPM with at least one patient presenting with CD. This report widens the phenotypic variability of PKHD1 variants to VMC, and others hepatic bile ducts malformations with inconstant renal phenotype in adults and highlights the important intra-familial phenotypic variability. It also showed that PKHD1 might be a major gene for CD. This work adds an example of the contribution of exome sequencing, not only in the discovery of new genes but also in expanding the phenotypic spectrum of well-known disease-associated genes, using reverse phenotyping.

Published
2015

5. In-Frame Mutations in Exon 1 of SKI Cause Dominant Shprintzen-Goldberg Syndrome

Author

Anne H. Child, Christophe Béroud, Catherine Boileau, Jaime Sanchez del Pozo, Julie De Backer, Cyril Goizet, Jeanne Amiel, Lesley C. Adès, Pierre Vabres, Anne De Paepe, Julien Thevenon, Laurence Duplomb, Katherine Holman, Christel Thauvin-Robinet, Clarisse Baumann, Frédéric Huet, Ghislaine Plessis, Gwenaëlle Collod-Béroud, Bert Callewaert, Eloisa Arbustini, Henri Plauchu, Bernard Aral, Peter N. Robinson, Sophie Julia, Jean Baptiste Rivière, Valérie Cormier-Daire, Gavin Arno, Nadège Gigot, Marjolijn Renard, Lucie Gueneau, Guillaume Jondeau, Patrick Callier, Jean Benoît Courcet, Maja Di Rocco, Laurence Faivre, Virginie Carmignac, Estelle Lopez, Maurizia Grasso, Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Department of medical genetics, Royal Alexandra Children's Hospital, Department of Pediatrics and Genetics, Ghent University Hospital-Center for Medical Genetics, Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse], FHU TRANSLAD (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Génétique des Anomalies du Développement (GAD), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Service de pédiatrie (CHU de Dijon), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), Université Montpellier 1 (UM1)-IFR3, Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Marfan Research Group, Westmead Hospital [Sydney], Université Claude Bernard Lyon 1 (UCBL), Université de Lyon, Service de génétique [Hôpial Louis Pradel - HCL], Hôpital Louis Pradel [CHU - HCL], Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Service de Génétique [CHU Caen], CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Center for Medical Genetics [Ghent], Ghent University Hospital, Cardiac & Vascular Sciences, St Georges, University of London, Physiopathologie de la résorption osseuse et thérapie des tumeurs osseuses primitives, Université de Nantes (UN)-IFR26-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Service de Biologie Moléculaire, Laboratoire Electronique, Informatique et Image [UMR6306] (Le2i), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Arts et Métiers (ENSAM), Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, IRCCS - Pavia, Centre for Inherited Cardiovacular Diseases, Foundation IRCCS Policlinico San Matteo, Service de Génétique Médicale du CHU de Bordeaux, Hôpital Robert Debré Paris, Hôpital Robert Debré, Université de Technologie de Compiègne (UTC), Service de cardiologie, Université Paris Diderot - Paris 7 (UPD7)-AP-HP - Hôpital Bichat - Claude Bernard [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Génétique Médicale et Génomique Fonctionnelle (GMGF), Institut National de la Santé et de la Recherche Médicale (INSERM)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Centre National de la Recherche Scientifique (CNRS), Head of the Department of Medical Genetics, Center for Medical Genetics, Universiteit Gent = Ghent University [Belgium] (UGENT), Lipides - Nutrition - Cancer [Dijon - U1231] ( LNC ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ), FHU TRANSLAD, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Génétique des Anomalies du Développement ( GAD ), Université de Bourgogne ( UB ) -IFR100 - Structure fédérative de recherche Santé-STIC, Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques, Université Montpellier 1 ( UM1 ) -IFR3-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université de Montpellier ( UM ), The Children's Hospital at Westmead, Service de Génétique, Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Hôtel Dieu, Service de génétique, CHU Caen-Hôpital Clémenceau, Université de Nantes ( UN ) -IFR26-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Laboratoire Electronique, Informatique et Image ( Le2i ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique ( CNRS ), Université de Technologie de Compiègne [Compiègne] ( UTC ), Assistance publique - Hôpitaux de Paris (AP-HP)-AP-HP - Hôpital Bichat - Claude Bernard [Paris]-Université Paris Diderot - Paris 7 ( UPD7 ), Génétique Médicale et Génomique Fonctionnelle ( GMGF ), Aix Marseille Université ( AMU ) -Assistance Publique - Hôpitaux de Marseille ( APHM ) - Hôpital de la Timone [CHU - APHM] ( TIMONE ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Ghent University [Belgium] ( UGENT ), COLLOD-BEROUD, Gwenaëlle, Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), Laboratoire de Génétique Chromosomique et Moléculaire [CHU Dijon], Université de Bourgogne (UB)-École Nationale Supérieure d'Arts et Métiers (ENSAM), HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-Arts et Métiers Sciences et Technologies, HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-HESAM Université - Communauté d'universités et d'établissements Hautes écoles Sorbonne Arts et métiers université (HESAM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP - Hôpital Bichat - Claude Bernard [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Universiteit Gent = Ghent University (UGENT)

Subjects
Male, Models, Molecular, medicine.disease_cause, [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Marfan Syndrome, Arachnodactyly, Exon, 0302 clinical medicine, Gene Order, Missense mutation, Genetics(clinical), Child, [ SDV.GEN.GH ] Life Sciences [q-bio]/Genetics/Human genetics, Genetics (clinical), Exome sequencing, Genes, Dominant, Genetics, 0303 health sciences, Mutation, Shprintzen–Goldberg syndrome, Exons, Phenotype, Pedigree, DNA-Binding Proteins, Child, Preschool, Female, medicine.symptom, Adult, Adolescent, Molecular Sequence Data, [ SDV.BBM.BM ] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Biology, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, 03 medical and health sciences, Camptodactyly, Craniosynostoses, Young Adult, stomatognathic system, Report, Proto-Oncogene Proteins, medicine, Humans, Amino Acid Sequence, 030304 developmental biology, Facies, [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, medicine.disease, Molecular biology, Protein Structure, Tertiary, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Sequence Alignment, human activities, 030217 neurology & neurosurgery
Abstract

International audience; Shprintzen-Goldberg syndrome (SGS) is characterized by severe marfanoid habitus, intellectual disability, camptodactyly, typical facial dysmorphism, and craniosynostosis. Using family-based exome sequencing, we identified a dominantly inherited heterozygous in-frame deletion in exon 1 of SKI. Direct sequencing of SKI further identified one overlapping heterozygous in-frame deletion and ten heterozygous missense mutations affecting recurrent residues in 18 of the 19 individuals screened for SGS; these individuals included one family affected by somatic mosaicism. All mutations were located in a restricted area of exon 1, within the R-SMAD binding domain of SKI. No mutation was found in a cohort of 11 individuals with other marfanoid-craniosynostosis phenotypes. The interaction between SKI and Smad2/3 and Smad 4 regulates TGF-β signaling, and the pattern of anomalies in Ski-deficient mice corresponds to the clinical manifestations of SGS. These findings define SGS as a member of the family of diseases associated with the TGF-β-signaling pathway.

Published
2012

6. The DYRK1A gene is a cause of syndromic intellectual disability with severe microcephaly and epilepsy

Author

Laurence Duplomb, Nadège Gigot, Jean-Benoît Courcet, Anne-Laure Mosca-Boidron, Perrine Malzac, Laurence Faivre, Nathalie Marle, Laetitia Lambert, Estelle Lopez, Clémence Ragon, Christel Thauvin-Robinet, Martine Lemesle, Anne Moncla, Alice Masurel-Paulet, Patrick Callier, Christophe Philippe, Julien Thevenon, and Frédéric Huet

Subjects
Male, Candidate gene, Down syndrome, Microcephaly, Adolescent, Genotype, Biology, Protein Serine-Threonine Kinases, Bioinformatics, Frameshift mutation, Epilepsy, Angelman syndrome, Intellectual Disability, Gene Order, Genetics, medicine, Humans, Child, Genetics (clinical), Base Sequence, Facies, Electroencephalography, Syndrome, Protein-Tyrosine Kinases, medicine.disease, Phenotype, Child, Preschool, Speech delay, Mutation, Female, medicine.symptom, Haploinsufficiency
Abstract

Background DYRK1A plays different functions during development, with an important role in controlling brain growth through neuronal proliferation and neurogenesis. It is expressed in a gene dosage dependent manner since dyrk1a haploinsufficiency induces a reduced brain size in mice, and DYRK1A overexpression is the candidate gene for intellectual disability (ID) and microcephaly in Down syndrome. We have identified a 69 kb deletion including the 5′ region of the DYRK1A gene in a patient with growth retardation, primary microcephaly, facial dysmorphism, seizures, ataxic gait, absent speech and ID. Because four patients previously reported with intragenic DYRK1A rearrangements or 21q22 microdeletions including only DYRK1A presented with overlapping phenotypes, we hypothesised that DYRK1A mutations could be responsible for syndromic ID with severe microcephaly and epilepsy. Methods The DYRK1A gene was studied by direct sequencing and quantitative PCR in a cohort of 105 patients with ID and at least two symptoms from the Angelman syndrome spectrum (microcephaly < −2.5 SD, ataxic gait, seizures and speech delay). Results We identified a de novo frameshift mutation (c.290_291delCT; p.Ser97Cysfs*98) in a patient with growth retardation, primary severe microcephaly, delayed language, ID, and seizures. Conclusion The identification of a truncating mutation in a patient with ID, severe microcephaly, epilepsy, and growth retardation, combined with its dual function in regulating the neural proliferation/neuronal differentiation, adds DYRK1A to the list of genes responsible for such a phenotype. ID, microcephaly, epilepsy, and language delay are the more specific features associated with DYRK1A abnormalities. DYRK1A studies should be discussed in patients presenting such a phenotype.

Published
2012

7. Clinical and molecular spectrum of renal malformations in Kabuki syndrome

Author

Christine Binquet, Jean-Benoît Courcet, Valérie Cormier-Daire, Marjolaine Willems, Sylvain Poisson, Brigitte Gilbert-Dussardier, Elodie Sanchez, Rémi Salomon, Marie Ange Delrue, Sylvie Odent, Eudeline Alix, Annick Toutain, Aurélia Jaquette, Clarisse Baumann, Le Quan Sang Kim-Han, Damien Sanlaville, Anna Pelet, Honorine Kayirangwa, Laurence Faivre, Martine Le Merrer, Christiane Mousson, Alice Goldenberg, Marie-Pierre Cordier, Marie-Line Jacquemont, Anne Moncla, Stéphanie Perez-Martin, Caroline Michot, Sandrine Vinault, Joelle Roume, Frédéric Huet, Didier Lacombe, Lucille Pinson, Catherine Vincent-Delorme, Stanislas Lyonnet, Marianne Till, David Geneviève, Pierre Sarda, Antoine Burguet, Nicole Philip, Jeanne Amiel, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Génétique et épigénétique des maladies métaboliques, neurosensorielles et du développement (Inserm U781), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Recherche Epidémiologique en Santé Périnatale et Santé des Femmes et des Enfants (UMR_S 953), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital d'Enfants [CHU Dijon], Hôpital du Bocage, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Service de cytogénétique constitutionnelle, Hospices Civils de Lyon (HCL)-CHU de Lyon-Centre Neuroscience et Recherche, Service de génétique clinique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré, Génétique Médicale, Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Centre de Référence Anomalies du Développement Ouest, Service de génétique [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Cellules souches mésenchymateuses, environnement articulaire et immunothérapies de la polyarthrite rhumatoide, Université Montpellier 1 (UM1)-IFR3, Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de génétique [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Laboratoire de Génétique Chromosomique, Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE), Centre de Référence ' Anomalies du Développement et Syndromes Malformatifs Sud - Est PACA ', Génétique Médicale et Génomique Fonctionnelle (GMGF), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Département de Génétique Médicale, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Service de Génétique, Hôpital Poissy-saint Germain, Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques (LGMR), Université Montpellier 1 (UM1)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Centre de Maladies Rares, Anomalies du Développement Nord de France-CH Arras - CHRU Lille, Service de néphrologie (CHU de Dijon), Centre d'Investigation Clinique 1432 (Dijon) - Epidemiologie Clinique/Essais Cliniques (CIC-EC), Université de Bourgogne (UB)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Institut National de la Santé et de la Recherche Médicale (INSERM), Génétique des Anomalies du Développement (GAD), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, CHU de Montpellier, Service de néphrologie pédiatrique [CHU Necker], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de Génétique Médicale [CHU Necker], Service de Cytogénétique (HFME), Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Génétique et épigénétique des maladies métaboliques, neurosensorielles et du développement ( Inserm U781 ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Recherche Epidémiologique en Santé Périnatale et Santé des Femmes et des Enfants ( UMR_S 953 ), Université Paris-Sud - Paris 11 ( UP11 ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Service Pédiatrique, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ) -Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Hospices Civils de Lyon ( HCL ) -CHU de Lyon-Centre Neuroscience et Recherche, Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Robert Debré, CHU de Poitiers-Centre de Référence Anomalies du Développement Ouest, CHU Rouen-Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ), Université Montpellier 1 ( UM1 ) -IFR3-Institut National de la Santé et de la Recherche Médicale ( INSERM ), Hôpital Bretonneau-CHRU Tours, Institut de Génétique et Développement de Rennes ( IGDR ), Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Centre National de la Recherche Scientifique ( CNRS ) -Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Assistance Publique - Hôpitaux de Marseille ( APHM ) - Hôpital de la Timone [CHU - APHM] ( TIMONE ), Génétique Médicale et Génomique Fonctionnelle ( GMGF ), Aix Marseille Université ( AMU ) -Assistance Publique - Hôpitaux de Marseille ( APHM ) - Hôpital de la Timone [CHU - APHM] ( TIMONE ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Centre Hospitalier Régional Universitaire [Montpellier] ( CHRU Montpellier ), Laboratoire de génétique des maladies rares. Pathologie moleculaire, etudes fonctionnelles et banque de données génétiques, Université Montpellier 1 ( UM1 ) -IFR3-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université de Montpellier ( UM ), Centre d'Investigation Clinique 1432 (Dijon) - Epidemiologie Clinique/Essais Cliniques ( CIC-EC ), Université de Bourgogne ( UB ) -Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Génétique des Anomalies du Développement ( GAD ), Université de Bourgogne ( UB ) -IFR100 - Structure fédérative de recherche Santé-STIC, CHU Necker - Enfants Malades [AP-HP]-Assistance publique - Hôpitaux de Paris (AP-HP), Hopital Necker-Enfants Malades-Assistance publique - Hôpitaux de Paris (AP-HP), Service de Cytogénétique ( HFME ), Hôpital Femme Mère Enfant [CHU - HCL] ( HFME ), Hospices Civils de Lyon ( HCL ) -Hospices Civils de Lyon ( HCL ), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Sud - Paris 11 (UP11), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Hôpital du Bocage, Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré, Hôpital Bretonneau-Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Necker - Enfants Malades [AP-HP]-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Necker - Enfants Malades [AP-HP], Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Paris Descartes - Paris 5 ( UPD5 ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Université Paris-Sud - Paris 11 ( UP11 ), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ) -Hôpital du Bocage, Centre hospitalier universitaire de Poitiers ( CHU Poitiers ) -Centre de Référence Anomalies du Développement Ouest, Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Hospices Civils de Lyon ( HCL ) -Hôpital Femme Mère Enfant [CHU - HCL] ( HFME ), Hospices Civils de Lyon ( HCL ), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR3, Université Montpellier 1 (UM1)-Université Montpellier 1 (UM1), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hospices Civils de Lyon (HCL)-Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL), Institut National de la Santé et de la Recherche Médicale (INSERM)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Centre National de la Recherche Scientifique (CNRS), IFR3, Université Montpellier 1 (UM1)-Université Montpellier 1 (UM1)-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), and IFR100 - Structure fédérative de recherche Santé-STIC-Université de Bourgogne (UB)

Subjects
Male, Pathology, Genotyping Techniques, urologic and male genital diseases, Kidney, Cohort Studies, chemistry.chemical_compound, Child, Ultrasonography, Histone Demethylases, 0303 health sciences, 030305 genetics & heredity, Nuclear Proteins, Hypoplasia, 3. Good health, Neoplasm Proteins, DNA-Binding Proteins, medicine.anatomical_structure, Vestibular Diseases, Child, Preschool, Creatinine, Biological Markers, Female, France, Abnormalities, Multiple, Cohort study, Glomerular Filtration Rate, Adult, Genetic Markers, medicine.medical_specialty, Adolescent, Urinary system, Urology, Renal function, 03 medical and health sciences, Young Adult, medicine, Humans, Abnormalities, Multiple, Preschool, Genetic Association Studies, 030304 developmental biology, Retrospective Studies, [SDV.GEN]Life Sciences [q-bio]/Genetics, business.industry, Infant, Retrospective cohort study, medicine.disease, Hematologic Diseases, chemistry, Face, Pediatrics, Perinatology and Child Health, business, [ SDV.GEN ] Life Sciences [q-bio]/Genetics, Kabuki syndrome, Biomarkers
Abstract

International audience; OBJECTIVE: To determine the frequency and types of renal malformations, and to evaluate renal function in a cohort of patients with Kabuki syndrome (KS). STUDY DESIGN: Renal ultrasound scans and plasma creatinine measurements were collected from a French cohort of 94 patients with genotyped KS. Renal function was evaluated based on the estimated glomerular filtration rate. A genotype-phenotype study was conducted for renal and urinary tract malformations. RESULTS: Renal malformations were present in 22% of cases, and urinary tract anomalies were present in 15%. Renal malformations were observed in 28% of the MLL2 mutation-positive group and in 0% of the MLL2 mutation-negative group (P = .015). No correlation was found between the presence or absence of renal or urinary tract malformations and the location or type of MLL2 mutation. Renal function was normal except for 1 patient with a MLL2 mutation diagnosed in the first days of life and severe renal disease due to unilateral renal agenesia and controlateral severe hypoplasia that progressed to the terminal stage at age 2 years. CONCLUSION: Our study emphasizes the need for ultrasound and renal function screening in children diagnosed with KS.

Published
2012

Catalog

Books, media, physical & digital resources
See catalog results