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Baer S, Afenjar A, Smol T, Piton A, Gérard B, Alembik Y, Bienvenu T, Boursier G, Boute O, Colson C, Cordier MP, Cormier-Daire V, Delobel B, Doco-Fenzy M, Duban-Bedu B, Fradin M, Geneviève D, Goldenberg A, Grelet M, Haye D, Heron D, Isidor B, Keren B, Lacombe D, Lèbre AS, Lesca G, Masurel A, Mathieu-Dramard M, Nava C, Pasquier L, Petit A, Philip N, Piard J, Rondeau S, Saugier-Veber P, Sukno S, Thevenon J, Van-Gils J, Vincent-Delorme C, Willems M, Schaefer E, Morin G. Wiedemann-Steiner syndrome as a major cause of syndromic intellectual disability: A study of 33 French cases. Clin Genet 2018; 94:141-152. [PMID: 29574747 DOI: 10.1111/cge.13254] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 03/18/2018] [Accepted: 03/20/2018] [Indexed: 12/18/2022]
Abstract
Wiedemann-Steiner syndrome (WSS) is a rare syndromic condition in which intellectual disability (ID) is associated with hypertrichosis cubiti, short stature, and characteristic facies. Following the identification of the causative gene (KMT2A) in 2012, only 31 cases of WSS have been described precisely in the literature. We report on 33 French individuals with a KMT2A mutation confirmed by targeted gene sequencing, high-throughput sequencing or exome sequencing. Patients' molecular and clinical features were recorded and compared with the literature data. On the molecular level, we found 29 novel mutations. We observed autosomal dominant transmission of WSS in 3 families and mosaicism in one family. Clinically, we observed a broad phenotypic spectrum with regard to ID (mild to severe), the facies (typical or not of WSS) and associated malformations (bone, cerebral, renal, cardiac and ophthalmological anomalies). Hypertrichosis cubiti that was supposed to be pathognomonic in the literature was found only in 61% of our cases. This is the largest series of WSS cases yet described to date. A majority of patients exhibited suggestive features, but others were less characteristic, only identified by molecular diagnosis. The prevalence of WSS was higher than expected in patients with ID, suggesting than KMT2A is a major gene in ID.
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Affiliation(s)
- S Baer
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Institut Génétique Médicale d'Alsace, Strasbourg, France.,Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - A Afenjar
- Unité de Génétique, Hôpital Armand Trousseau-La Roche-Guyon, AP-HP, Paris, France
| | - T Smol
- Institut de Génétique Médicale, Hôpital Jeanne de Flandre, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - A Piton
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - B Gérard
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Y Alembik
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Institut Génétique Médicale d'Alsace, Strasbourg, France
| | - T Bienvenu
- Institut Cochin, INSERM U1016, CNRS UMR8104, Université Paris Descartes, Paris, France
| | - G Boursier
- Département Génétique Médicale, Laboratoire génétique moléculaire maladies auto inflammatoires et maladies rares, CHRU de Montpellier, Montpellier, France
| | - O Boute
- Service de Génétique Clinique, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - C Colson
- Service de Génétique Clinique, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - M-P Cordier
- Service de Génétique Médicale, Hospices Civils de Lyon, Lyon, France
| | - V Cormier-Daire
- Département de Génétique, INSERM UMR1163, Institut Imagine, Hôpital Necker-Enfants-Malades, Université Paris Descartes, Sorbonne Paris Cité, AP-HP, Paris, France
| | - B Delobel
- Centre de Génétique Chromosomique, Groupe Hospitalier de l'Institut Catholique de Lille, Lille, France
| | - M Doco-Fenzy
- Service de Génétique, CHU de Reims, Reims, France
| | - B Duban-Bedu
- Centre de Génétique Chromosomique, Groupe Hospitalier de l'Institut Catholique de Lille, Lille, France
| | - M Fradin
- Service de Génétique Clinique, CHU Rennes, Rennes, France
| | - D Geneviève
- Département de Génétique Médicale, CHRU Montpellier, Faculté de Médecine de Montpellier-Nîmes, INSERM U1183, Montpellier, France
| | - A Goldenberg
- Service de Génétique Médicale, CHU de Rouen, Rouen, France
| | - M Grelet
- Département de Génétique Médicale, Assistance Publique Hôpitaux de Marseille, Marseille, France
| | - D Haye
- Service de Génétique Clinique, Unité Fonctionnelle de Génétique Médicale, CHU Paris-GH La Pitié Salpêtrière-Charles Foix, Paris, France
| | - D Heron
- Service de Génétique Clinique, Unité Fonctionnelle de Génétique Médicale, CHU Paris-GH La Pitié Salpêtrière-Charles Foix, Paris, France
| | - B Isidor
- Service de Génétique Médicale, CHU de Nantes, Nantes, France
| | - B Keren
- Unité Fonctionnelle de Génomique du Développement, Centre de Génétique Moléculaire et Chromosomique, CHU Paris-GH La Pitié Salpêtrière-Charles Foix, Paris, France
| | - D Lacombe
- Département de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - A-S Lèbre
- Laboratoire de Génétique, Service de Génétique et Biologie de la Reproduction, CHU de Reims, Reims, France
| | - G Lesca
- Service de Génétique Médicale, Hospices Civils de Lyon, Lyon, France
| | - A Masurel
- Centre de Génétique, CHU Dijon, Hôpital d'Enfants, Dijon, France
| | | | - C Nava
- Unité Fonctionnelle de Génomique du Développement, Centre de Génétique Moléculaire et Chromosomique, CHU Paris-GH La Pitié Salpêtrière-Charles Foix, Paris, France
| | - L Pasquier
- Service de Génétique Clinique, CHU Rennes, Rennes, France
| | - A Petit
- Service de Génétique Clinique, CHU Amiens Picardie, Amiens, France
| | - N Philip
- Département de Génétique Médicale, Assistance Publique Hôpitaux de Marseille, Marseille, France
| | - J Piard
- Centre de Génétique Humaine, Université de Franche-Comté, CHU Besançon, Besançon, France
| | - S Rondeau
- Département de Génétique, INSERM UMR1163, Institut Imagine, Hôpital Necker-Enfants-Malades, Université Paris Descartes, Sorbonne Paris Cité, AP-HP, Paris, France
| | - P Saugier-Veber
- Département de Génétique, CHU Rouen, Inserm U1079, Institut pour la recherche et l'innovation en Biomédecine, Université de Rouen, Rouen, France
| | - S Sukno
- Service de Neuropédiatrie, Hôpital Saint Vincent de Paul, Groupe Hospitalier de l'Institut Catholique Lillois, Faculté Libre de Médecine, Lille, France
| | - J Thevenon
- Equipe d'Accueil 4271, Génétique des Anomalies du Développement, Université de Bourgogne, Dijon, France
| | - J Van-Gils
- Département de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - C Vincent-Delorme
- Service de Génétique Clinique, Centre Hospitalier Régional Universitaire de Lille, Lille, France
| | - M Willems
- Département de Génétique Médicale, CHRU Montpellier, Faculté de Médecine de Montpellier-Nîmes, INSERM U1183, Montpellier, France
| | - E Schaefer
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Institut Génétique Médicale d'Alsace, Strasbourg, France
| | - G Morin
- Service de Génétique Clinique, CHU Amiens Picardie, Amiens, France
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Marx-Deseure A, Carpentier S, Thomas D, Bouquillon S, Delobel B, Bailleux B, Bomy H, Vaast P, Debarge V. [Birth of a child with Down syndrome: parental choice or failure of screening policy?]. Gynecol Obstet Fertil 2015; 43:284-289. [PMID: 25813435 DOI: 10.1016/j.gyobfe.2015.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 02/02/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVES Birth of a child with Down syndrome (DS) can follow parental choice or failure of screening. The objective of this work is to describe the circumstances of births of children with DS in a French perinatal health network. METHODS Retrospective multicentric study, with prospective trial registration of all children born alive with DS, between 2010 and 2013. RESULTS Sixty-three children were born with DS. Complete screening was performed by 61 % of patients, incomplete screening by 29 % of patients and no screening test by 10 %. Among these births, 50 % occurred following parental choice, 40 % following failure of screening and for 10 %, parental choice concerning screening was unknown. False negative had often calculating risk close to 1/1000. CONCLUSION In this study, the birth of a child with DS occurred following parental choice in half of cases. It's necessary, to optimize the follow-up, to document in medical records the medical information and parental choice concerning DS screening and data of screening when this was done.
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Affiliation(s)
- A Marx-Deseure
- Pôle d'obstétrique, CHRU de Lille, hôpital Jeanne-de-Flandre, avenue Eugène-Avinée, 59037 Lille cedex, France.
| | - S Carpentier
- Réseau de santé en périnatalité OMBREL, CHRU de Lille, hôpital Jeanne-de-Flandre, 59037 Lille cedex, France
| | - D Thomas
- Pôle pédiatrie, CHRU de Lille, hôpital Jeanne-de-Flandre, avenue Eugène-Avinée, 59037 Lille cedex, France
| | - S Bouquillon
- Pôle de biopathologie, laboratoire de cytogénétique, CHRU de Lille, 59037 Lille cedex, France
| | - B Delobel
- Laboratoire de génétique, hôpital Saint-Vincent-de-Paul, 59020 Lille, France
| | - B Bailleux
- Réseau de santé en périnatalité OMBREL, CHRU de Lille, hôpital Jeanne-de-Flandre, 59037 Lille cedex, France
| | - H Bomy
- Réseau de santé en périnatalité OMBREL, CHRU de Lille, hôpital Jeanne-de-Flandre, 59037 Lille cedex, France
| | - P Vaast
- Pôle d'obstétrique, CHRU de Lille, hôpital Jeanne-de-Flandre, avenue Eugène-Avinée, 59037 Lille cedex, France
| | - V Debarge
- Pôle d'obstétrique, CHRU de Lille, hôpital Jeanne-de-Flandre, avenue Eugène-Avinée, 59037 Lille cedex, France; Université de Lille 2, 59000 Nord de France, France
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Degenhardt F, Priebe L, Meier S, Lennertz L, Streit F, Witt SH, Hofmann A, Becker T, Mössner R, Maier W, Nenadic I, Sauer H, Mattheisen M, Buizer-Voskamp J, Ophoff RA, Rujescu D, Giegling I, Ingason A, Wagner M, Delobel B, Andrieux J, Meyer-Lindenberg A, Heinz A, Walter H, Moebus S, Corvin A, Rietschel M, Nöthen MM, Cichon S. Duplications in RB1CC1 are associated with schizophrenia; identification in large European sample sets. Transl Psychiatry 2013; 3:e326. [PMID: 26151896 PMCID: PMC3849960 DOI: 10.1038/tp.2013.101] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 09/17/2013] [Accepted: 09/26/2013] [Indexed: 12/16/2022] Open
Abstract
Schizophrenia (SCZ) is a severe and debilitating neuropsychiatric disorder with an estimated heritability of ~80%. Recently, de novo mutations, identified by next-generation sequencing (NGS) technology, have been suggested to contribute to the risk of developing SCZ. Although these studies show an overall excess of de novo mutations among patients compared with controls, it is not easy to pinpoint specific genes hit by de novo mutations as actually involved in the disease process. Importantly, support for a specific gene can be provided by the identification of additional alterations in several independent patients. We took advantage of existing genome-wide single-nucleotide polymorphism data sets to screen for deletions or duplications (copy number variations, CNVs) in genes previously implicated by NGS studies. Our approach was based on the observation that CNVs constitute part of the mutational spectrum in many human disease-associated genes. In a discovery step, we investigated whether CNVs in 55 candidate genes, suggested from NGS studies, were more frequent among 1637 patients compared with 1627 controls. Duplications in RB1CC1 were overrepresented among patients. This finding was followed-up in large, independent European sample sets. In the combined analysis, totaling 8461 patients and 112 871 controls, duplications in RB1CC1 were found to be associated with SCZ (P=1.29 × 10(-5); odds ratio=8.58). Our study provides evidence for rare duplications in RB1CC1 as a risk factor for SCZ.
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Affiliation(s)
- F Degenhardt
- Institute of Human Genetics, University of
Bonn, Bonn, Germany,Department of Genomics, Life and Brain
Center, University of Bonn, Bonn, Germany,Institute of Human Genetics, University of
Bonn, Sigmund-Freud-Straße 25, 53127
Bonn, Germany. E-mail:
| | - L Priebe
- Institute of Human Genetics, University of
Bonn, Bonn, Germany,Department of Genomics, Life and Brain
Center, University of Bonn, Bonn, Germany
| | - S Meier
- Department of Genetic Epidemiology in
Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg
University, Mannheim, Germany
| | - L Lennertz
- Department of Psychiatry, University of
Bonn, Bonn, Germany
| | - F Streit
- Department of Genetic Epidemiology in
Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg
University, Mannheim, Germany
| | - S H Witt
- Department of Genetic Epidemiology in
Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg
University, Mannheim, Germany
| | - A Hofmann
- Institute of Human Genetics, University of
Bonn, Bonn, Germany,Department of Genomics, Life and Brain
Center, University of Bonn, Bonn, Germany
| | - T Becker
- German Center for Neurodegenerative Diseases
(DZNE), Bonn, Germany,Institute for Medical Biometry,
Informatics and Epidemiology, University of Bonn, Bonn,
Germany
| | - R Mössner
- Department of Psychiatry, University of
Bonn, Bonn, Germany
| | - W Maier
- Department of Psychiatry, University of
Bonn, Bonn, Germany,German Center for Neurodegenerative Diseases
(DZNE), Bonn, Germany
| | - I Nenadic
- Department of Psychiatry and Psychotherapy,
Jena University Hospital, Jena, Germany
| | - H Sauer
- Department of Psychiatry and Psychotherapy,
Jena University Hospital, Jena, Germany
| | - M Mattheisen
- Department of Genomics, Life and Brain
Center, University of Bonn, Bonn, Germany,Institute for Genomic Mathematics, University
of Bonn, Bonn, Germany,Channing Division of Network Medicine,
Brigham and Women's Hospital and Harvard Medical School, Boston,
MA, USA
| | - J Buizer-Voskamp
- Department of Psychiatry, Rudolf Magnus
Institute of Neuroscience, University Medical Center Utrecht,
Utrecht, The Netherlands,Department of Medical Genetics, University
Medical Center Utrecht, Utrecht, The Netherlands
| | - R A Ophoff
- Department of Psychiatry, Rudolf Magnus
Institute of Neuroscience, University Medical Center Utrecht,
Utrecht, The Netherlands,Department of Human Genetics, David Geffen
School of Medicine, University of California Los Angeles, Los
Angeles, CA, USA,Center for Neurobehavioral Genetics, Semel
Institute for Neuroscience & Human Behavior, University of California Los
Angeles, Los Angeles, CA, USA
| | | | - D Rujescu
- Molecular and Clinical Neurobiology,
Department of Psychiatry, Ludwig-Maximilians-University, Munich,
Germany,Department of Psychiatry, University of
Halle-Wittenberg, Halle, Germany
| | - I Giegling
- Molecular and Clinical Neurobiology,
Department of Psychiatry, Ludwig-Maximilians-University, Munich,
Germany,Department of Psychiatry, University of
Halle-Wittenberg, Halle, Germany
| | - A Ingason
- Department of Psychiatry, University of
Halle-Wittenberg, Halle, Germany
| | - M Wagner
- Department of Psychiatry, University of
Bonn, Bonn, Germany
| | - B Delobel
- Centre de Génétique
chromosomique, GHICL, Hôpital St-Vincent de Paul, Lille,
France
| | - J Andrieux
- Institut de Génétique
Médicale, Hopital Jeanne de Flandre, CHRU de Lille,
Lille, France
| | - A Meyer-Lindenberg
- Department of Psychiatry and Psychotherapy,
Central Institute of Mental Health, Medical Faculty Mannheim, University of
Heidelberg, Mannheim, Germany
| | - A Heinz
- Department of Psychiatry and Psychotherapy,
Charité Campus Mitte, Berlin, Germany
| | - H Walter
- Department of Psychiatry and Psychotherapy,
Charité Campus Mitte, Berlin, Germany
| | - S Moebus
- Institute of Medical Informatics, Biometry,
and Epidemiology, University Duisburg-Essen, Essen,
Germany
| | - A Corvin
- Department of Psychiatry, Institute of
Neuroscience, Trinity College Dublin, Dublin, Ireland
| | | | - M Rietschel
- Department of Genetic Epidemiology in
Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg
University, Mannheim, Germany
| | - M M Nöthen
- Institute of Human Genetics, University of
Bonn, Bonn, Germany,Department of Genomics, Life and Brain
Center, University of Bonn, Bonn, Germany
| | - S Cichon
- Institute of Human Genetics, University of
Bonn, Bonn, Germany,Department of Genomics, Life and Brain
Center, University of Bonn, Bonn, Germany,Institute of Neuroscience and Medicine
(INM-1), Structural and Functional Organisation of the Brain, Genomic Imaging, Research
Centre Juelich, Juelich, Germany,Division of Medical Genetics, University
Hospital Basel and Department of Biomedicine, University of Basel,
Basel, Switzerland
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Montpellier C, Crepieux P, Quatannens B, Delobel B, Croquette M, Stehelin D, Auriault C, Groux H, Coll J. Homologous T and B cells immortalized in vitro by the Epstein-Barr virus exhibit differential genetical and functional features. Int J Oncol 2012; 11:87-96. [PMID: 21528184 DOI: 10.3892/ijo.11.1.87] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
After in vitro EBV infection of peripheral blood lymphocytes (PBL), we previously obtained IL-2-independent T-cell lines expressing EBNA1 and LMP1 viral latent genes. One tumorigenic clone, NC5, was further characterized for chromosomal abnormalities, rearrangement and expression of oncogenes, and constitutive or induced activation of cellular transduction pathways. NC5 as well as TC cells derived from an NC5-induced tumor exhibited the same few chromosomal abnormalities absent in normal PBL and B-cell lines (LCLs) from the same donor. No rearrangement or altered expression of C-MYC, BCL-2 and NF-KB2 oncogenes could be detected. In contrast, we found high levels of BCL-X and thioredoxin (TRX), as markers of EBV infection or T-cell activation/transformation status. No constitutive activation of NF-kappa B or STAT transcriptional complexes was observed in these cells. For NF-kappa B, this was in apparent contradiction with its reported inducibility mediated by LMP1, taking into account that NF-kappa B was still inducible by TNF alpha or PMA and ionomycin. Our results highlight independence of EBV protein-mediated transformation towards classical cellular pathways in T-lymphocytes.
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Affiliation(s)
- C Montpellier
- INST PASTEUR,CNRS URA 1854,F-59019 LILLE,FRANCE. INST PASTEUR,UMR CNRS 319,INST BIOL,F-59021 LILLE,FRANCE. HOP ST ANTOINE,CTR CYTOGENET,F-59019 LILLE,FRANCE
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Molin AM, Andrieux J, Koolen DA, Malan V, Carella M, Colleaux L, Cormier-Daire V, David A, de Leeuw N, Delobel B, Duban-Bedu B, Fischetto R, Flinter F, Kjaergaard S, Kok F, Krepischi AC, Le Caignec C, Ogilvie CM, Maia S, Mathieu-Dramard M, Munnich A, Palumbo O, Papadia F, Pfundt R, Reardon W, Receveur A, Rio M, Ronsbro Darling L, Rosenberg C, Sá J, Vallee L, Vincent-Delorme C, Zelante L, Bondeson ML, Annerén G. A novel microdeletion syndrome at 3q13.31 characterised by developmental delay, postnatal overgrowth, hypoplastic male genitals, and characteristic facial features. J Med Genet 2011; 49:104-9. [PMID: 22180640 PMCID: PMC3261728 DOI: 10.1136/jmedgenet-2011-100534] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Congenital deletions affecting 3q11q23 have rarely been reported and only five cases have been molecularly characterised. Genotype-phenotype correlation has been hampered by the variable sizes and breakpoints of the deletions. In this study, 14 novel patients with deletions in 3q11q23 were investigated and compared with 13 previously reported patients. METHODS Clinical data were collected from 14 novel patients that had been investigated by high resolution microarray techniques. Molecular investigation and updated clinical information of one cytogenetically previously reported patient were also included. RESULTS The molecular investigation identified deletions in the region 3q12.3q21.3 with different boundaries and variable sizes. The smallest studied deletion was 580 kb, located in 3q13.31. Genotype-phenotype comparison in 24 patients sharing this shortest region of overlapping deletion revealed several common major characteristics including significant developmental delay, muscular hypotonia, a high arched palate, and recognisable facial features including a short philtrum and protruding lips. Abnormal genitalia were found in the majority of males, several having micropenis. Finally, a postnatal growth pattern above the mean was apparent. The 580 kb deleted region includes five RefSeq genes and two of them are strong candidate genes for the developmental delay: DRD3 and ZBTB20. CONCLUSION A newly recognised 3q13.31 microdeletion syndrome is delineated which is of diagnostic and prognostic value. Furthermore, two genes are suggested to be responsible for the main phenotype.
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Affiliation(s)
- Anna-Maja Molin
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.
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6
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Petit F, Holder-Espinasse M, Duban-Bedu B, Bouquillon S, Boute-Benejean O, Bazin A, Rouland V, Manouvrier-Hanu S, Delobel B. Trisomy 7 mosaicism prenatally misdiagnosed and maternal uniparental disomy in a child with pigmentary mosaicism and Russell- Silver syndrome. Clin Genet 2011; 81:265-71. [DOI: 10.1111/j.1399-0004.2010.01621.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bonnet C, Andrieux J, Beri-Dexheimer M, Leheup B, Boute O, Manouvrier S, Delobel B, Copin H, Receveur A, Mathieu M, Thiriez G, Le Caignec C, David A, de Blois MC, Malan V, Philippe A, Cormier-Daire V, Colleaux L, Flori E, Dollfus H, Pelletier V, Thauvin-Robinet C, Masurel-Paulet A, Faivre L, Tardieu M, Bahi-Buisson N, Callier P, Mugneret F, Edery P, Jonveaux P, Sanlaville D. Microdeletion at chromosome 4q21 defines a new emerging syndrome with marked growth restriction, mental retardation and absent or severely delayed speech. J Med Genet 2010; 47:377-84. [DOI: 10.1136/jmg.2009.071902] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Walters RG, Jacquemont S, Valsesia A, de Smith AJ, Martinet D, Andersson J, Falchi M, Chen F, Andrieux J, Lobbens S, Delobel B, Stutzmann F, El-Sayed Moustafa JS, Chèvre JC, Lecoeur C, Vatin V, Bouquillon S, Buxton JL, Boute O, Holder-Espinasse M, Cuisset JM, Lemaitre MP, Ambresin AE, Brioschi A, Gaillard M, Giusti V, Fellmann F, Ferrarini A, Hadjikhani N, Campion D, Guilmatre A, Goldenberg A, Calmels N, Mandel JL, Le Caignec C, David A, Isidor B, Cordier MP, Dupuis-Girod S, Labalme A, Sanlaville D, Béri-Dexheimer M, Jonveaux P, Leheup B, Ounap K, Bochukova EG, Henning E, Keogh J, Ellis RJ, Macdermot KD, van Haelst MM, Vincent-Delorme C, Plessis G, Touraine R, Philippe A, Malan V, Mathieu-Dramard M, Chiesa J, Blaumeiser B, Kooy RF, Caiazzo R, Pigeyre M, Balkau B, Sladek R, Bergmann S, Mooser V, Waterworth D, Reymond A, Vollenweider P, Waeber G, Kurg A, Palta P, Esko T, Metspalu A, Nelis M, Elliott P, Hartikainen AL, McCarthy MI, Peltonen L, Carlsson L, Jacobson P, Sjöström L, Huang N, Hurles ME, O'Rahilly S, Farooqi IS, Männik K, Jarvelin MR, Pattou F, Meyre D, Walley AJ, Coin LJM, Blakemore AIF, Froguel P, Beckmann JS. A new highly penetrant form of obesity due to deletions on chromosome 16p11.2. Nature 2010; 463:671-5. [PMID: 20130649 PMCID: PMC2880448 DOI: 10.1038/nature08727] [Citation(s) in RCA: 345] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Accepted: 12/01/2009] [Indexed: 01/04/2023]
Affiliation(s)
- R G Walters
- Section of Genomic Medicine, Imperial College London, London W12 0NN, UK
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9
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Masurel-Paulet A, Andrieux J, Callier P, Cuisset JM, Le Caignec C, Holder M, Thauvin-Robinet C, Doray B, Flori E, Alex-Cordier MP, Beri M, Boute O, Delobel B, Dieux A, Vallee L, Jaillard S, Odent S, Isidor B, Beneteau C, Vigneron J, Bilan F, Gilbert-Dussardier B, Dubourg C, Labalme A, Bidon C, Gautier A, Pernes P, Pinoit JM, Huet F, Mugneret F, Aral B, Jonveaux P, Sanlaville D, Faivre L. Delineation of 15q13.3 microdeletions. Clin Genet 2010; 78:149-61. [PMID: 20236110 DOI: 10.1111/j.1399-0004.2010.01374.x] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The increasing use of array-comparative genomic hybridization (array-CGH) to identify copy number variations (CNVs) in patients with developmental delay (DD), mental retardation and/or dysmorphic features has allowed the recent recognition of numerous genomic imbalances, including the 15q13.3 microdeletion. Patients with this microdeletion generally present with relatively consistent breakpoints at BP4 and BP5, which include the CHRNA7 gene. About 100 index cases have been reported since the first publication in 2008. This large number of patients ascertained through highly variable samples has been necessary to describe the full phenotypic spectrum of this microdeletion, ranging from mental retardation with dysmorphic features, epilepsy, neuropsychiatric disturbances with or without cognitive impairment to complete absence of anomalies. Here, we describe a collaborative study reporting a new cohort of 12 index patients and 13 relatives carrying a heterozygous BP4-BP5 microdeletion out of a series of 4625 patients screened by array-CGH for DD. We confirm the clinical expressivity of the disease as well as the incomplete penetrance in seven families. We showed through a review of the literature that males are more likely to be symptomatic. Sequence analysis of CHRNA7 yielded no data to support the unmasking of recessive variants as a cause of phenotypic variability. We also report the first patient carrying a 15q13.3 homozygous microdeletion inherited from both parents. He had severe epileptic encephalopathy with retinopathy, autistic features and choreoathetosis. Besides the classical approximately 1.5 Mb BP4-BP5 microdeletion, we also describe three index patients and two relatives with a smaller 500 kb microdeletion, including the CHRNA7 gene.
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Affiliation(s)
- A Masurel-Paulet
- Centre de Génétique et Centre de Référence Anomalies du développement et syndromes malformatifs, Hôpital d'Enfants, CHU, Dijon
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10
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Nemos C, Lambert L, Giuliano F, Doray B, Roubertie A, Goldenberg A, Delobel B, Layet V, N'guyen MA, Saunier A, Verneau F, Jonveaux P, Philippe C. Mutational spectrum of CDKL5 in early-onset encephalopathies: a study of a large collection of French patients and review of the literature. Clin Genet 2010; 76:357-71. [PMID: 19793311 DOI: 10.1111/j.1399-0004.2009.01194.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The CDKL5 gene has been implicated in the molecular etiology of early-onset intractable seizures with infantile spasms (IS), severe hypotonia and atypical Rett syndrome (RTT) features. So far, 48 deleterious alleles have been reported in the literature. We screened the CDKL5 gene in a cohort of 177 patients with early-onset seizures, including 30 men and 10 girls with Aicardi syndrome. The screening was negative for all men as well as for women with Aicardi syndrome, excluding the CDKL5 gene as a candidate for this neurodevelopmental disorder. We report 11 additional de novo mutations in CDKL5 in female patients. For the first time, the MLPA approach allowed the identification of a partial deletion encompassing the promoter and the first two exons of CDKL5. The 10-point mutations consist of five missenses (with recurrent amino acid changes at p.Ala40 and p.Arg178), four splicing variants and a 1-base pair duplication. We present a review of all mutated alleles published in the literature. In our study, the overall frequency of mutations in CDKL5 in women with early-onset seizures is around 8.6%, a result comparable with previous reports. Noteworthy, the CDKL5 mutation rate is high (28%) in women with early-onset seizures and IS.
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Affiliation(s)
- C Nemos
- Laboratoire de génétique médicale, EA 4002, Vandoeuvre-les-Nancy, France
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11
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Cano A, Rouzier C, Monnot S, Chabrol B, Conrath J, Lecomte P, Delobel B, Boileau P, Valero R, Procaccio V, Paquis-Flucklinger V, Vialettes B. Identification of novel mutations in WFS1 and genotype-phenotype correlation in Wolfram syndrome. Am J Med Genet A 2007; 143A:1605-12. [PMID: 17568405 DOI: 10.1002/ajmg.a.31809] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Mutations in the WFS1 gene have been reported in Wolfram syndrome (WS), an autosomal recessive disorder defined by early onset of diabetes mellitus (DM) and progressive optic atrophy. Because of the low prevalence of this syndrome and the recent identification of the WFS1 gene, few data are available concerning the relationships between clinical and molecular aspects of the disease. Here, we describe 12 patients from 11 families with WS. We report on eight novel (A214fsX285, L293fsX303, P346L, I427S, V503fsX517, R558C, S605fsX711, P838L) and seven previously reported mutations. We also looked for genotype-phenotype correlation both in patients included in this study and 19 additional WS patients that were previously reported. Subsequently, we performed a systematic review and meta-analysis of five published clinical and molecular studies of WFS1 for genotype-phenotype correlation, combined with our current French patient group for a total of 96 patients. The presence of two inactivating mutations was shown to predispose to an earlier age of onset of both DM and optic atrophy. Moreover, the clinical expression of WS was more complete and occurred earlier in patients harboring no missense mutation.
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Affiliation(s)
- A Cano
- Department of Nutrition, Metabolic Diseases and Endocrinology, la Timone, Hospital, Marseille, France
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12
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Andrieux J, Villenet C, Quief S, Lignon S, Geffroy S, Roumier C, de Leersnyder H, de Blois MC, Manouvrier S, Delobel B, Benzacken B, Bitoun P, Attie-Bitach T, Thomas S, Lyonnet S, Vekemans M, Kerckaert JP. Genotype phenotype correlation of 30 patients with Smith-Magenis syndrome (SMS) using comparative genome hybridisation array: cleft palate in SMS is associated with larger deletions. J Med Genet 2007; 44:537-40. [PMID: 17468296 PMCID: PMC2597929 DOI: 10.1136/jmg.2006.048736] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Smith-Magenis syndrome (SMS) is rare (prevalence 1 in 25 000) and is associated with psychomotor delay, a particular behavioural pattern and congenital anomalies. SMS is often due to a chromosomal deletion of <4 Mb at the 17p11.2 locus, leading to haploinsufficiency of numerous genes. Mutations of one of these gemes, RAI1, seems to be responsible for the main features found with heterozygous 17p11.2 deletions. METHODS We studied DNA from 30 patients with SMS using a 300 bp amplimers comparative genome hybridisation array encompassing 75 loci from a 22 Mb section from the short arm of chromosome 17. RESULTS Three patients had large deletions (10%). Genotype-phenotype correlation showed that two of them had cleft palate, which was not found in any of the other patients with SMS (p<0.007, Fisher's exact test). The smallest extra-deleted region associated with cleft palate in SMS is 1.4 Mb, contains <16 genes and is located at 17p11.2-17p12. Gene expression array data showed that the ubiquitin B precursor (UBB) is significantly expressed in the first branchial arch in the fourth and fifth weeks of human development. CONCLUSION These data support UBB as a good candidate gene for isolated cleft palate.
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Douet-Guilbert N, Bris MJL, Amice V, Marchetti C, Delobel B, Amice J, Braekeleer MD, Morel F. Interchromosomal effect in sperm of males with translocations: report of 6 cases and review of the literature. ACTA ACUST UNITED AC 2005; 28:372-9. [PMID: 16300670 DOI: 10.1111/j.1365-2605.2005.00571.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Somatic chromosomal abnormalities are frequently found in infertile men, particularly in those with low sperm count and/or seeking intracytoplasmic sperm injection. These abnormalities mostly consist of numerical sex chromosome abnormalities and translocations (Robertsonian or reciprocal). In this study, we searched for the occurrence of non-disjunction of chromosomes not involved in translocations during meiosis, phenomenon called interchromosomal effect (ICE) and first described by Lejeune (1965). Ejaculate samples of two patients carrying a Robertsonian translocation and four a reciprocal translocation patients and four controls (men with a 46,XY karyotype and normal sperm parameters) were studied in dual FISH 7-9, dual FISH 13-21 and triple FISH X-Y-18. A statistically significant increase of disomy X, Y and XY (P = 0.009, P = 0.004, P < 0.001) was found in the Robertsonian der(13;14)(q10;q10) carrier but not in the der(14;21)(q10;q10) carrier compared with controls. Among reciprocal translocation carriers, a significant increase of disomy 21 (P = 0.033) was observed in a sole patient with a t(9;22)(q21;q11.2). The increase of meiotic non-disjunction for chromosome 21 and sex chromosomes is a recurrent event found in other studies. According to our results and published data, the ICE on some specific chromosomes is likely in men carrier of a translocation, although it cannot be excluded that the aneuploidy is related to the oligoasthenoteratozoospermia usually present in these men. Moreover, this phenomenon showed interindividual variations which cannot be predicted. The risk of aneuploidy in sperm of males used for ICSI need to be evaluated. It could be superadded to that of meiotic segregation of the translocation to give a more precise and personalized risk assessment of aneuploidy in the offspring of those men.
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MESH Headings
- Adult
- Aneuploidy
- Chromosomes, Human, Pair 13
- Chromosomes, Human, Pair 18
- Chromosomes, Human, Pair 21
- Chromosomes, Human, Pair 7
- Chromosomes, Human, Pair 9
- Chromosomes, Human, X
- Chromosomes, Human, Y
- Humans
- In Situ Hybridization, Fluorescence
- Infertility, Male/genetics
- Male
- Middle Aged
- Spermatozoa/abnormalities
- Translocation, Genetic/genetics
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Affiliation(s)
- N Douet-Guilbert
- Laboratoire d'Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Bretagne Occidentale, 22 avenue Camille Desmoulins, CS 93837, F-29238 Brest cedex 3, France
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14
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Morel F, Douet-Guilbert N, Le Bris MJ, Herry A, Marchetti C, Lefebvre V, Delobel B, Amice V, Amice J, De Braekeleer M. Lack of intraindividual variation of unbalanced spermatozoa frequencies from a 46,XY,t(9;22)(q21;q11.2) carrier: Case report. Hum Reprod 2004; 19:2227-30. [PMID: 15298974 DOI: 10.1093/humrep/deh439] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The meiotic segregation pattern of 83 men carrying a balanced reciprocal translocation between two autosomes has already been published. Nevertheless, the question of intraindividual variations has not been addressed yet. A 32-year-old patient was found to be a carrier of a t(9;22)(q21;q11.2) during the investigations for a couple with infertility for 3 years. Two sperm samples were obtained at more than 3 months interval. Both sperm samples were analyzed in triple FISH with the D9Z1 and LSI BCR/ABL ES translocation probes. The frequency of gametes exhibiting a chromosomal imbalance was 45.32% and 42.1% in samples 1 and 2, respectively, with the unbalanced spermatozoa resulting from adjacent 1, adjacent 2, and 3:1 segregation in decreasing frequencies. No statistically significant difference was found between both segregation profiles. Four studies have analyzed the meiotic segregation pattern of translocations within families; they found similar profiles of meiotic segregation in each family, but not between families. This suggests, along with our results, that meiotic segregation is not a random process. More studies on intraindividual variations are necessary to allow a better understanding of the meiotic behaviour of chromosomal rearrangements and the practical interest of studies of this kind.
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MESH Headings
- Adult
- Chromosome Aberrations
- Chromosome Segregation
- Chromosomes, Human, Pair 22
- Chromosomes, Human, Pair 9
- Chromosomes, Human, X
- Chromosomes, Human, Y
- Gene Frequency
- Heterozygote
- Humans
- In Situ Hybridization, Fluorescence
- Male
- Meiosis
- Oligospermia/genetics
- Oligospermia/pathology
- Translocation, Genetic
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Affiliation(s)
- F Morel
- Service de Cytogénétique, Cytologie et Biologie de la Reproduction, CHU Morvan, Brest, Laboratoire d'Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Bretagne Occidentale, Brest, France
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15
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Morel F, Douet-Guilbert N, Moerman A, Duban B, Marchetti C, Delobel B, Le Bris MJ, Amice V, De Braekeleer M. Chromosome aneuploidy in the spermatozoa of two men with globozoospermia. Mol Hum Reprod 2004; 10:835-8. [PMID: 15448169 DOI: 10.1093/molehr/gah111] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The objective of this study was to determine the aneuploidy level in spermatozoa in two men with globozoospermia. Sperm nuclei were analysed by fluorescence in-situ hybridization (FISH) in two infertile males with globozoospermia. Dual FISH for chromosomes 7 and 9, 13 and 21, and triple FISH for chromosomes X, Y, and 18 was performed. The main outcome measured was meiotic segregation differences between both globozoospermic men and controls. A statistically significant difference in disomies 13 and 21 was found between patients 1 and 2. The diploidy rate of spermatozoa of patient 1 (0.876%) was significantly increased compared with that of patient 2 (0.304%) and control men (0.293%). In conclusion there seems to be a slightly increased frequency of aneuploidy in round-headed spermatozoa. However, it is unlikely that these aneuploid spermatozoa would be used in assisted reproduction techniques.
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Affiliation(s)
- F Morel
- Laboratoire d'Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Bretagne Occidentale, Brest, France
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16
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Blons H, Feldmann D, Duval V, Messaz O, Denoyelle F, Loundon N, Sergout-Allaoui A, Houang M, Duriez F, Lacombe D, Delobel B, Leman J, Catros H, Journel H, Drouin-Garraud V, Obstoy MF, Toutain A, Oden S, Toublanc JE, Couderc R, Petit C, Garabédian EN, Marlin S. Screening of SLC26A4 (PDS) gene in Pendred's syndrome: a large spectrum of mutations in France and phenotypic heterogeneity. Clin Genet 2004; 66:333-40. [PMID: 15355436 DOI: 10.1111/j.1399-0004.2004.00296.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Sensorineural hearing defect and goiter are common features of Pendred's syndrome. The clinical diagnosis of Pendred's syndrome remains difficult because of the lack of sensitivity and specificity of the thyroid signs. The identification of PDS as the causative gene allowed molecular screening and enabled a re-evaluation of the syndrome to identify potential diagnostic characteristics. This report presents the clinical and genotypic findings of 30 French families, for whom a diagnosis of Pendred's syndrome had been made. Twenty-seven families had at least one mutated allele. Twenty-eight different mutations were identified, 11 of which had never been previously reported. The main clinical characteristics were: early hearing loss, fluctuation in terms of during deafness evolution, and the presence of an enlarged vestibular aqueduct.
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Affiliation(s)
- H Blons
- Service de biochimie et de biologie moléculaire, Hôpital d'Enfants Armnd-Trousseau, AP-HP, Paris, France
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17
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Luciani JJ, de Mas P, Depetris D, Mignon-Ravix C, Bottani A, Prieur M, Jonveaux P, Philippe A, Bourrouillou G, de Martinville B, Delobel B, Vallee L, Croquette MF, Mattei MG. Telomeric 22q13 deletions resulting from rings, simple deletions, and translocations: cytogenetic, molecular, and clinical analyses of 32 new observations. J Med Genet 2003; 40:690-6. [PMID: 12960216 PMCID: PMC1735584 DOI: 10.1136/jmg.40.9.690] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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18
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Durand F, Castorina P, Morant C, Delobel B, Barouk E, Modiano P. [Rothmund-Thomson syndrome, trisomy 8 mosaicism and RECQ4 gene mutation]. Ann Dermatol Venereol 2002; 129:892-5. [PMID: 12218919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
BACKGROUND We report a case of Rothmund-Thomson syndrome associated with a trisomy 8 mosaicism, and RECQ4 gene mutation. OBSERVATION An 18-year-old man presented with a poikiloderma affecting photoexposed areas and the buttocks. This lesions appeared during the first year of life and was secondly associated with alopecia, sparse body hair, keratosis, and warts. He also had proportional short stature, thumb and patella aplasia, particular facies, and plantar malformations. Cytogenetic studies evidenced chromosomal instability and trisomy 8 mosaicism. The DNA repair capacity was normal. A mutation in RECQ4 helicase gene was found. DISCUSSION Rothmund-Thomson syndrome is a rare hereditary syndrome characterized by early onset of poikiloderma. Patients exhibit variable features including skeletal abnormalities, juvenile cataracts, photosensitivity, and a higher than expected incidence of cutaneous or extracutaneous malignancies. Genetic patterns found in Rothmund-Thomson syndrome are heterogeneous. Normal karyotypes have been demonstrated in many patients. Various karyotypic abnormalities or reduced DNA repair was seen in others. Recently, five patients with Rothmund-Thomson syndrome were shown to segregate for mutations in RECQ4 helicase gene. Thus, clinical and genetic features in Rothmund-Thomson syndrome are polymorphous. Therefore, it could be interesting to correlate genotype and phenotype.
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Affiliation(s)
- F Durand
- Service de Dermatologie, Centre hospitalier Saint Philibert, Université Catholique de Lille, 115, rue du Grand But, 59160 Lille-Lomme
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19
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Luquet I, Mugneret F, Athis PD, Nadal N, Favre B, Abel C, Chelloug N, Lespinasse J, Portnoi MF, Joyé N, Dupont JM, Lebbar A, Bresson JL, Fellmann F, Siffroi JP, Chantot-Bastaraud S, Chiesa J, Amblard F, Devillard F, Jeandidier E, Boceno M, Rival JM, Bellec V, Lallaoui H, Delobel B, Croquette MF, Benzacken B. French multi-centric study of 2000 amniotic fluid interphase FISH analyses from high-risk pregnancies and review of the literature. Ann Genet 2002; 45:77-88. [PMID: 12119216 DOI: 10.1016/s0003-3995(02)01118-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This prospective and multi-centric study confirms the accuracy and the limitations of interphase FISH and shows that any cytogenetics laboratory can perform this technique. With regard to the technical approach, we think that slides must be examined by two investigators, because the scoring may be subjective. The main problem with the AneuVysion kit concerns the alpha satellite probes, and especially the chromosome 18 probe, which is sometimes very difficult to interpret because of the high variability of the size of the spots, and this may lead to false negative and uninformative cases. The best solution would be to replace these probes by locus-specific probes. Concerning clinical management, we offer interphase FISH only in very high-risk pregnancies or/and at late gestational age because of the cost of the test. We think that an aberrant FISH result can be used for a clinical decision when it is associated with a corresponding abnormal ultrasound scan. In other cases, most of the time, we prefer to wait for the standard karyotype.
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Affiliation(s)
- I Luquet
- Laboratoire de cytogénétique, CHU le Bocage, 21034 cedex, Dijon, France
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20
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Leroy X, Leteurtre E, Mahe PH, Gosselin B, Delobel B, Croquette MF. Renal oncocytoma with a novel chromosomal rearrangement, der(13)t(13;16)(p11;p11), associated with a renal cell carcinoma. J Clin Pathol 2002; 55:157-8. [PMID: 11865018 PMCID: PMC1769588 DOI: 10.1136/jcp.55.2.157] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- X Leroy
- Service d'Anatomie et de Cytologie Pathologiques, Faculté de Médecine, Pôle Recherche, Rue Polonovski, CHRU, 59045 Lille Cedex, France;
| | - E Leteurtre
- Service d'Anatomie et de Cytologie Pathologiques, Faculté de Médecine, Pôle Recherche, Rue Polonovski, CHRU, 59045 Lille Cedex, France;
| | - P H Mahe
- Service d'Anatomie et de Cytologie Pathologiques, Faculté de Médecine, Pôle Recherche, Rue Polonovski, CHRU, 59045 Lille Cedex, France;
| | - B Gosselin
- Service d'Anatomie et de Cytologie Pathologiques, Faculté de Médecine, Pôle Recherche, Rue Polonovski, CHRU, 59045 Lille Cedex, France;
| | - B Delobel
- Laboratory of Cytogenetics, Saint-Antoine Hospital, Lille, France
| | - M F Croquette
- Laboratory of Cytogenetics, Saint-Antoine Hospital, Lille, France
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21
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De Leersnyder H, De Blois MC, Claustrat B, Romana S, Albrecht U, Von Kleist-Retzow JC, Delobel B, Viot G, Lyonnet S, Vekemans M, Munnich A. Inversion of the circadian rhythm of melatonin in the Smith-Magenis syndrome. J Pediatr 2001; 139:111-6. [PMID: 11445803 DOI: 10.1067/mpd.2001.115018] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The objective was to determine the circadian rhythm of melatonin in the Smith-Magenis syndrome (SMS), which causes behavioral problems and sleep disturbance. STUDY DESIGN Questionnaires, sleep consultations, and sleep diaries were obtained in 20 children with SMS (9 girls, 11 boys aged 4 to 17 years). Actigraphy, electroencephalography, and the circadian variations of plasma melatonin, cortisol, and growth hormone were recorded in 8 patients. Early sleep onset, early sleep offset, and sleep attack indicated sleep disturbance. RESULTS All children with SMS had a phase shift of their circadian rhythm of melatonin. Time at onset of melatonin secretion was 6 AM +/- 2 (control group: 9 P.M. +/- 2). Peak time was 12 PM +/- 1 (control group: 3:30 AM +/- 1:30), and melatonin offset was at 8 PM +/- 1 (control group: 6 AM +/- 1). Behavioral problems correlated with the inverted circadian rhythm of melatonin. CONCLUSION Considering that clock genes mediate the generation of circadian rhythms, we suggest that haploinsufficiency for a circadian system gene mapping to chromosome 17p11.2 may cause the inversion of the circadian rhythm of melatonin in SMS.
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Affiliation(s)
- H De Leersnyder
- Department of Genetics and Unité INSERM 393, Hôpital des Enfants-Malades, Paris, France
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22
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Giraudeau F, Taine L, Biancalana V, Delobel B, Journel H, Missirian C, Lacombe D, Bonneau D, Parent P, Aubert D, Hauck Y, Croquette MF, Toutain A, Mattei MG, Loiseau HA, David A, Vergnaud G. Use of a set of highly polymorphic minisatellite probes for the identification of cryptic 1p36.3 deletions in a large collection of patients with idiopathic mental retardation. J Med Genet 2001; 38:121-5. [PMID: 11288712 PMCID: PMC1734816 DOI: 10.1136/jmg.38.2.121] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Brevière GM, Croquette MF, Delobel B, Pellerin P, Rey C. [ Head and truncal abnormalities and secondary clinical aspects of 22q11 microdeletion. A series of 111 patients]. Arch Pediatr 2000; 6 Suppl 2:305s-307s. [PMID: 10370516 DOI: 10.1016/s0929-693x(99)80448-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- G M Brevière
- Service des maladies cardiovasculaires infantiles et congénitales, CHRU Lille, France
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24
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Manouvrier S, Boute O, Viot G, Delobel B. Deletion of chromosome 4p detected by FISH in a girl with normal high resolution karyotype. Clin Genet 1999; 55:127-9. [PMID: 10189091 DOI: 10.1034/j.1399-0004.1999.550210.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Delobel B, Delannoy V, Pini G, Zapella M, Tardieu M, Vallée L, Croquette MF. Identification and molecular characterization of a small 11q23.3 de novo duplication in a patient with Rett syndrome manifestations. Am J Med Genet 1998; 80:273-80. [PMID: 9843053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
We report on an interstitial duplication of the long arm of chromosome 11 [46XX,dup(11) (q23.3)] in a girl with atypical Rett syndrome (RS). This case was discovered during a systematic cytogenetic study of RS. Fluorescent in situ hybridization including total chromosome painting and use of regional specific YAC, cosmid and plasmid probes, was used to confirm the chromosome 11q involvement and to identify the landmarks of the smallest 11q duplication reported to date. The findings are compared to cases of trisomy 11q reported previously, all of which have a larger duplication and different clinical manifestations. Surprisingly, mental retardation and behavior disorders are less severe in these cases.
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Affiliation(s)
- B Delobel
- Centre de Génétique Chromosomique, Hôpital Saint Antoine, Lille, France
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26
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Stavropoulou C, Mignon C, Delobel B, Moncla A, Depetris D, Croquette MF, Mattei MG. Severe phenotype resulting from an active ring X chromosome in a female with a complex karyotype: characterisation and replication study. J Med Genet 1998; 35:932-8. [PMID: 9832041 PMCID: PMC1051487 DOI: 10.1136/jmg.35.11.932] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
We report on the characterisation of a complex chromosome rearrangement, 46,X,del(Xq)/47,X,del(Xq),+r(X), in a female newborn with multiple malformations. Cytogenetic and molecular methods showed that the del(Xq) contains the XIST locus and is non-randomly inactivated in all metaphases. The tiny r(X) chromosome gave a positive FISH signal with UBE1, ZXDA, and MSN cosmid probes, but not with a XIST cosmid probe. Moreover, it has an active status, as shown by a very short (three hour) terminal BrdU pulse followed by fluorescent anti-BrdU antibody staining. The normal X is of paternal origin and both rearranged chromosomes originate from the same maternal chromosome. We suggest that both abnormal chromosomes result from the three point breakage of a maternal isodicentric idic(X)(q21.1). Finally, the phenotype of our patient is compared to other published cases and, despite the absence of any 45,X clone, it appears very similar to those with a 45,X/46,X,r(X) karyotype where the tiny r(X) is active.
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Affiliation(s)
- C Stavropoulou
- INSERM U491, Faculté de Médecine Timone, Marseille, France
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27
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Klosowski S, Delobel B, Morisot C, Kongolo G, Biancalana V, Thelliez P, Djebara A, Croquette MF, Deroubaix P. [Unusual mechanism in Prader-Willi syndrome: incidence in genetic counseling]. Arch Pediatr 1998; 5:934-5. [PMID: 9759307 DOI: 10.1016/s0929-693x(98)80208-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Delobel B, Djlelati R, Gabriel-Robez O, Croquette MF, Rousseaux-Prevost R, Rousseaux J, Rigot JM, Rumpler Y. Y-autosome translocation and infertility: usefulness of molecular, cytogenetic and meiotic studies. Hum Genet 1998; 102:98-102. [PMID: 9490306 DOI: 10.1007/s004390050660] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An apparently balanced reciprocal translocation 46,X,t(Y;6) (q11.23 approximately q12;p11.1) was observed in an infertile man with severe oligozooteratozoospermia. Different mitotic chromosome banding patterns were performed and fluorescence in situ hybridization indicated a breakpoint in the fluorescent Yq heterochromatin. Molecular genetic deletion experiments for the azoospermia factor region in distal Yq11 showed the retention of the DAZ gene and meiotic pairing configurations suggested that the man's infertility could be due to the pairing behaviour of the Y;6 translocation chromosome with the X chromosome visualised by synaptonemal complex analysis at the electron microscopy level. The morphological appearance of the normal chromosome 6 and the Y;6 translocated chromosome included in the compartment of the sex vesicle may allow an explanation of the degeneration of most spermatocytes after the pachytene stage.
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Affiliation(s)
- B Delobel
- Laboratoire de Cytogénétique, Hôpital St-Antoine, Lille, France
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29
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Abstract
Smith-Magenis syndrome is caused by a 17p11.2 deletion. It associates mental retardation, facial dysmorphism and brachydactyly; aberrant behavior and major sleep problems are present in 70% of the cases. It is probably under-diagnosed because the facial abnormalities are mild and the behavioral problems with hyperactivity and self-injuries are dominant, leading to the diagnosis of psychiatric pathology. However these behavioral problems are sufficiently characterized to allow the diagnosis of the syndrome and look for a 17p11.2 microdeletion. Otorhinolaryngologic, ophthalmologic, cardiac and renal abnormalities can be associated and their evaluation is necessary. Smith-Magenis syndrome is considered as a contiguous gene syndrome. Genes have been mapped and isolated to the critical region, but their participation in the pathogenesis of the syndrome remains unclear.
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Affiliation(s)
- M O Livet
- Service de neurologie pédiatrique, hôpital d'enfant de la Timone, Marseille, France
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30
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Abstract
Gelsolin, an actin-binding and severing protein present in many mammalian cells, was characterized in human testis. Although abundant in testicular extracts, gelsolin was not detected in purified spermatogenic cells by immunoblot analysis. Immunofluorescence studies of testis sections showed that gelsolin has two main localizations: peritubular cells and the seminiferous epithelium. In peritubular cells, gelsolin was present together with alpha-SM actin, in agreement with the myoid cell characteristics of these cells. In a large proportion of the tubules, gelsolin was found mainly, together with actin, in the apical part of the seminiferous epithelium. This localization of gelsolin also was observed in seminiferous tubules with a partial or complete absence of germinal cells, which evokes a presence of gelsolin at the apex of Sertoli cells. However, in normal testis, a complex pattern of gelsolin labeling was also present, mostly in the apical third of the epithelium, around cells or groups of cells, mainly spermatids, and, less frequently, in various other localizations from the apical to the basal part of the seminiferous epithelium. Taken together, these observations suggest that gelsolin may play different functions in the seminiferous epithelium: (1) regulation of the dynamic alterations of the actin cytoskeleton in the apical cytoplasm of Sertoli cells, and (2) modification of actin filaments assemblies in specific structures at germ cell-Sertoli cell contacts. Thereby, the actin-modulating properties of gelsolin are probably involved in reorganization of the seminiferous epithelium related to germ cell differentiation.
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31
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Cossée M, Moutou C, Biancalana V, Bouix JC, Plessis G, Delobel B, Croquette MF, Gilgenkrantz S, Lambert JC, Malpuech G, Stoll C, Lanoe JL, Pechevis M, Mandel JL. [Fragile X syndrome is still unrecognized: efficacy of molecular diagnosis in mentally retarded probands]. Arch Pediatr 1997; 4:227-36. [PMID: 9181015 DOI: 10.1016/s0929-693x(97)87235-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The fragile X mental retardation syndrome is the most common cause of inherited mental retardation. Identification of the unstable mutation responsible for the disease has allowed the design of a fully reliable molecular test for the diagnosis of the disease and for genetic counselling (identification of clinically normal carriers and prenatal diagnosis). We started in July 1991 to search for the mutation in mentally retarded probands, with no known cause for their phenotype. We present the results of a 42-month experience. POPULATION AND METHODS One thousand and one hundred fourty-nine probands were analysed. In case of a positive diagnosis, an extension of the molecular study to relatives was proposed. DNA samples were studied by Southern blot following EcoRI or EcoRI + EagI digestion. Clinical data were collected from referring clinicians. RESULTS Seventy-three carriers of a full mutation were identified, belonging to 52 families. The mean age of the fragile X probands was 16 +/- 14 years, which is very surprising for a disease that causes significant manifestations by the age of 2 to 3 years. This indicates an insufficient knowledge about this disease in France. Most of the demands for the test were from clinical geneticists. This diagnosis is of major importance for genetic counselling, as illustrated by the following study of 108 women at risk in these families. CONCLUSIONS The importance of an early diagnosis followed by an extended family study, for carrier screening and prevention of this severe disease, justifies molecular testing on any child with mental retardation or significant language delay of unknown cause, in the absence of clinical signs formally excluding a fragile X diagnosis.
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Affiliation(s)
- M Cossée
- Laboratoire de génétique moléculaire humaine, faculté de médecine, Strasbourg, France
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32
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Rousseaux-Prévost R, Rigot JM, Delobel B, Lesur P, Collier F, Croquette MF, Gauthier A, Mazeman E, Rousseaux J. Molecular mapping of a Yq deletion in a patient with normal stature. Hum Genet 1996; 98:505-7. [PMID: 8792831 DOI: 10.1007/s004390050248] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The proximal long arm of the Y chromosome probably contains a gene (GCY) involved in stature determination. Recent reports have proposed the critical region extends from interval 4B to interval 5G (or 5E). In the present study, the deletion breakpoint in a male adult patient of normal height with a 46,X,del(Yq) karyotype was defined by the use of sequence-tagged site markers. The breakpoint was found between sY78 (interval 4B) and sY79 (interval 5A). The existence of a normal stature in this patient suggests that the growth determinant is proximal to sY79, therefore probably located in interval 4B or in proximal interval 5A of the Y chromosome.
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33
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Birot A, Delobel B, Gronnier P, Bonnet V, Maire I, Bozon D. A 5‐megabase familial deletion removes the IDS and FMR‐1 genes in a male Hunter patient. Hum Mutat 1996. [DOI: 10.1002/(sici)1098-1004(1996)7:3<266::aid-humu12>3.3.co;2-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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34
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Affiliation(s)
- A M Birot
- Laboratoire de Biochimie Pédiatrique (M. Mathieu), Hŏpital Debrousse, Lyon, France
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35
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Croquette M, Vallée L, Delobel B, Cuvellier J, Nuyts J. Résultat d'une étude cytogénétique et en biologie moléculaire de 90 cas d'Xqfra. Arch Pediatr 1995. [DOI: 10.1016/0929-693x(95)90452-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Cuvellier J, Vallée L, Delobel B, Krivosic J. Maladie de Charcot Marie Tooth et encéphalophatie fixée: atteinte de gènes contigus? Arch Pediatr 1995. [DOI: 10.1016/0929-693x(95)90480-q] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Chettouh Z, Croquette MF, Delobel B, Gilgenkrants S, Leonard C, Maunoury C, Prieur M, Rethoré MO, Sinet PM, Chery M. Molecular mapping of 21 features associated with partial monosomy 21: involvement of the APP-SOD1 region. Am J Hum Genet 1995; 57:62-71. [PMID: 7611297 PMCID: PMC1801243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We compared the phenotypes, karyotypes, and molecular data for six cases of partial monosomy 21. Regions of chromosome 21, the deletion of which corresponds to particular features of monosomy 21, were thereby defined. Five such regions were identified for 21 features. Ten of the features could be assigned to the region flanked by genes APP and SOD1: six facial features, transverse palmar crease, arthrogryposis-like symptoms, hypertonia, and contribution to mental retardation. This region, covering the interface of bands 21q21-21q22.1, is 4.7-6.4 Mb long and contains the gene encoding the glutamate receptor subunit GluR5 (GRIK1).
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Affiliation(s)
- Z Chettouh
- Centre National de la Recherche Scientifique, URA 1335, Hôpital Necker-Enfants Malades, Paris, France
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38
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Poddevin F, Delobel B, Courreges P, Bayart M. Antley-Bixler syndrome: case report and review of the literature. Genet Couns 1995; 6:241-246. [PMID: 8588853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
A female newborn presenting a malformative syndrome which groups trapezoidocephaly, midfacial hypoplasia, radiohumeral synostosis, multiple joint contractures and femoral bowing is described as being affected of an Antley-Bixler syndrome. We compare this case with the seventeen others cases reported.
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Affiliation(s)
- F Poddevin
- Clinique chirurgicale pédiatrique de l'hôpital St-Antoine, Lille
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39
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Febvay G, Delobel B, Rahbé Y. Influence of the amino acid balance on the improvement of an artificial diet for a biotype of Acyrthosiphon pisum (Homoptera: Aphididae). CAN J ZOOL 1988. [DOI: 10.1139/z88-362] [Citation(s) in RCA: 129] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A green biotype of the pea aphid, A. pisum, from Lusignan (France), showed very poor performance on the standard Akey and Beck diet. Significant improvement occurred after reduction of the osmotic pressure of the diet and modification of the amino acid component, according to the results of carcass analysis. A further improvement was obtained through an optimalization of the aromatic amino acid level: the tyrosine deficiency induced by its poor solubility was overcome by an excess of phenylalanine and the inclusion of a soluble tyrosine compound, β-alanyltyrosine. A new diet was therefore formulated for this biotype, on which adults were more than twice as heavy as on the standard diet.
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Abstract
Day 7 to Day 14 cow embryos were analyzed by gas chromatography and mass spectrometry for their fatty acid content. The total amount per embryo does not change between Day 7 and Day 10, but then increases sharply between Days 11 and 13, suggesting that it is related to blastocyst volume or weight. With increasing embryonic age, there is an increase in the fatty acid elongation and desaturation. Arachidonic acid is present in significant amounts on Day 14 which may indicate that prostaglandin synthesis has started. The composition of the fatty acids bound to bovine serum albumin (BSA) is similar to that for embryos. Therefore, this macromolecule may be of special value for adding lipids in culture media for mammalian embryos.
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