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Massier M, Doco-Fenzy M, Egloff M, Le Guillou X, Le Guyader G, Redon S, Benech C, Le Millier K, Uguen K, Ropars J, Sacaze E, Audebert-Bellanger S, Apetrei A, Molin A, Gruchy N, Vincent-Devulder A, Spodenkiewicz M, Jacquin C, Loron G, Thibaud M, Delplancq G, Brisset S, Lesieur-Sebellin M, Malan V, Romana S, Rio M, Marlin S, Amiel J, Marquet V, Dauriat B, Moradkhani K, Mercier S, Isidor B, Arpin S, Pujalte M, Jedraszak G, Pebrel-Richard C, Salaun G, Laffargue F, Boudjarane J, Missirian C, Chelloug N, Toutain A, Chiesa J, Keren B, Mignot C, Gouy E, Jaillard S, Landais E, Poirsier C. 3q29 duplications: A cohort of 46 patients and a literature review. Am J Med Genet A 2024:e63531. [PMID: 38421086 DOI: 10.1002/ajmg.a.63531] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 03/02/2024]
Abstract
Duplications of the 3q29 cytoband are rare chromosomal copy number variations (CNVs) (overlapping or recurrent ~1.6 Mb 3q29 duplications). They have been associated with highly variable neurodevelopmental disorders (NDDs) with various associated features or reported as a susceptibility factor to the development of learning disabilities and neuropsychiatric disorders. The smallest region of overlap and the phenotype of 3q29 duplications remain uncertain. We here report a French cohort of 31 families with a 3q29 duplication identified by chromosomal microarray analysis (CMA), including 14 recurrent 1.6 Mb duplications, eight overlapping duplications (>1 Mb), and nine small duplications (<1 Mb). Additional genetic findings that may be involved in the phenotype were identified in 11 patients. Focusing on apparently isolated 3q29 duplications, patients present mainly mild NDD as suggested by a high rate of learning disabilities in contrast to a low proportion of patients with intellectual disabilities. Although some are de novo, most of the 3q29 duplications are inherited from a parent with a similar mild phenotype. Besides, the study of small 3q29 duplications does not provide evidence for any critical region. Our data suggest that the overlapping and recurrent 3q29 duplications seem to lead to mild NDD and that a severe or syndromic clinical presentation should warrant further genetic analyses.
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Affiliation(s)
- Marie Massier
- Department of Genetics, Reims University Hospital, Reims, France
| | - Martine Doco-Fenzy
- Department of Genetics, Reims University Hospital, Reims, France
- Department of Genetics, Nantes University Hospital, Nantes, France
| | - Matthieu Egloff
- Department of Genetics, Poitiers University Hospital, Poitiers, France
- University of Poitiers, INSERM, LNEC, Department of Genetics, Poitiers University Hospital, Poitiers, France
| | - Xavier Le Guillou
- Department of Genetics, Poitiers University Hospital, Poitiers, France
- University of Poitiers, CNRS, LMA, Department of Genetics, Poitiers University Hospital, Poitiers, France
| | | | - Sylvia Redon
- Department of Genetics, Brest University Hospital, Brest, France
- Intellectual Disability Reference Center, Department of Pediatrics, Brest University Hospital, Brest, France
- University of Brest, Inserm, EFS, UMR 1078, GGB, Brest, France
| | - Caroline Benech
- University of Brest, Inserm, EFS, UMR 1078, GGB, Brest, France
| | | | - Kevin Uguen
- Department of Genetics, Brest University Hospital, Brest, France
- Intellectual Disability Reference Center, Department of Pediatrics, Brest University Hospital, Brest, France
- University of Brest, Inserm, EFS, UMR 1078, GGB, Brest, France
| | - Juliette Ropars
- Intellectual Disability Reference Center, Department of Pediatrics, Brest University Hospital, Brest, France
| | - Elise Sacaze
- Intellectual Disability Reference Center, Department of Pediatrics, Brest University Hospital, Brest, France
| | - Séverine Audebert-Bellanger
- Department of Genetics, Brest University Hospital, Brest, France
- Intellectual Disability Reference Center, Department of Pediatrics, Brest University Hospital, Brest, France
| | - Andreea Apetrei
- University of Normandy, UNICAEN, RU7450 BioTARGen, Caen University Hospital, Department of Genetics, Reference Center for Developmental Disorders and Malformative Syndromes, Anddi-Rares Network, Caen, France
| | - Arnaud Molin
- University of Normandy, UNICAEN, RU7450 BioTARGen, Caen University Hospital, Department of Genetics, Reference Center for Developmental Disorders and Malformative Syndromes, Anddi-Rares Network, Caen, France
| | - Nicolas Gruchy
- University of Normandy, UNICAEN, RU7450 BioTARGen, Caen University Hospital, Department of Genetics, Reference Center for Developmental Disorders and Malformative Syndromes, Anddi-Rares Network, Caen, France
| | - Aline Vincent-Devulder
- University of Normandy, UNICAEN, RU7450 BioTARGen, Caen University Hospital, Department of Genetics, Reference Center for Developmental Disorders and Malformative Syndromes, Anddi-Rares Network, Caen, France
| | | | - Clémence Jacquin
- Department of Genetics, Reims University Hospital, Reims, France
| | - Gauthier Loron
- Department of Neonatal Medicine and Pediatric Intensive Care, University of Reims Champagne-Ardenne, CReSTIC, Reims University Hospital, Reims, France
| | - Marie Thibaud
- Department of Pediatrics, American Memorial Hospital, Reims, France
| | | | - Sophie Brisset
- Constitutional Genetics Unit, Versailles Hospital, Le Chesnay, France
| | - Marion Lesieur-Sebellin
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Valérie Malan
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Serge Romana
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Marlène Rio
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Sandrine Marlin
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Jeanne Amiel
- Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France
| | - Valentine Marquet
- Department of Cytogenetics, Clinical Genetics and Reproductive Biology, Limoges University Hospital, Limoges, France
| | - Benjamin Dauriat
- Department of Cytogenetics, Clinical Genetics and Reproductive Biology, Limoges University Hospital, Limoges, France
| | | | - Sandra Mercier
- Department of Genetics, Nantes University Hospital, Nantes, France
| | - Bertrand Isidor
- Department of Genetics, Nantes University Hospital, Nantes, France
| | - Stéphanie Arpin
- Department of Genetics, Tours University Hospital, UMR 1253, iBrain, University of Tours, Inserm, Tours, France
| | | | - Guillaume Jedraszak
- Constitutional Genetic Laboratory, University Hospital of Amiens & UR4666 HEMATIM, University of Picardie Jules Verne, Amiens, France
| | - Céline Pebrel-Richard
- Cytogenetic Medical Department; UIC Cytogenetics of Rare Diseases and Reproduction (GRUIC ADERGEN), Rare Diseases Reference Center (CRMR): Developmental Anomalies and Malformative Syndromes in the Auvergne Region, Clermont-Ferrand University Hospital, Clermont-Ferrand, France
| | - Gaëlle Salaun
- Cytogenetic Medical Department; UIC Cytogenetics of Rare Diseases and Reproduction (GRUIC ADERGEN), Rare Diseases Reference Center (CRMR): Developmental Anomalies and Malformative Syndromes in the Auvergne Region, Clermont-Ferrand University Hospital, Clermont-Ferrand, France
| | - Fanny Laffargue
- Department of Medical Genetics, UIC ADDIR (GRIUC ADERGEN), Constitutive Reference Center CLAD South-East: Developmental anomalies and malformative syndromes, Clermont-Ferrand University Hospital, Clermont-Ferrand, France
| | - John Boudjarane
- Medical Genetics Department, Timone Enfants University Hospital, Assistance Publique des Hôpitaux de Marseille, Marseille, France
| | - Chantal Missirian
- Medical Genetics Department, Timone Enfants University Hospital, Assistance Publique des Hôpitaux de Marseille, Marseille, France
| | - Nora Chelloug
- Department of Medical Genetics, Toulouse University Hospital, Toulouse, France
| | - Annick Toutain
- Department of Genetics, Tours University Hospital, UMR 1253, iBrain, University of Tours, Inserm, Tours, France
| | - Jean Chiesa
- Department of Genetics, Nimes, University Hospital, Nimes University Hospital, Nimes, France
| | - Boris Keren
- Department of Genetics, APHP Sorbonne University, Paris, France
| | - Cyril Mignot
- Department of Genetics, APHP Sorbonne University, Paris, France
| | - Evan Gouy
- Department of Genetics, Hospices Civils de Lyon, Lyon, France
| | - Sylvie Jaillard
- Department of Cytogenetics and Cell Biology, Rennes university hospital, Rennes, France
| | - Emilie Landais
- Department of Genetics, Reims University Hospital, Reims, France
| | - Céline Poirsier
- Department of Genetics, Reims University Hospital, Reims, France
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2
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Schmid CM, Gregor A, Costain G, Morel CF, Massingham L, Schwab J, Quélin C, Faoucher M, Kaplan J, Procopio R, Saunders CJ, Cohen ASA, Lemire G, Sacharow S, O'Donnell-Luria A, Segal RJ, Shamshoni JK, Schweitzer D, Ebrahimi-Fakhari D, Monaghan K, Palculict TB, Napier MP, Tao A, Isidor B, Moradkhani K, Reis A, Sticht H, Chung WK, Zweier C. LHX2 haploinsufficiency causes a variable neurodevelopmental disorder. Genet Med 2023; 25:100839. [PMID: 37057675 DOI: 10.1016/j.gim.2023.100839] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 11/16/2022] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 04/15/2023] Open
Abstract
PURPOSE LHX2 encodes the LIM homeobox 2 transcription factor (LHX2), which is highly expressed in brain and well conserved across species, but has not been clearly linked to neurodevelopmental disorders (NDD) to date. METHODS Through international collaboration, we identified 19 individuals from 18 families with variable neurodevelopmental phenotypes, carrying a small chromosomal deletion, likely gene-disrupting or missense variants in LHX2. Functional consequences of missense variants were investigated in cellular systems. RESULTS Affected individuals presented with developmental and/or behavioral abnormalities, autism-spectrum disorder, variable intellectual disability, and microcephaly. We observed nucleolar accumulation for two missense variants located within the DNA-binding HOX domain, impaired interaction with co-factor LDB1 for another variant located in the protein-protein interaction mediating LIM domain, and impaired transcriptional activation by luciferase assay for four missense variants. CONCLUSION We implicate LHX2 haploinsufficiency by deletion and likely gene-disrupting variants as causative for a variable NDD. Our findings suggest a loss-of-function mechanism also for likely pathogenic LHX2 missense variants. Together, our observations underscore the importance of LHX2 in nervous system and for variable neurodevelopmental phenotypes.
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Affiliation(s)
- Cosima M Schmid
- Department of Human Genetics, Inselspital Bern, University of Bern, 3010 Bern, Switzerland; Department for Biomedical Research (DBMR), University of Bern, 3010 Bern, Switzerland
| | - Anne Gregor
- Department of Human Genetics, Inselspital Bern, University of Bern, 3010 Bern, Switzerland; Department for Biomedical Research (DBMR), University of Bern, 3010 Bern, Switzerland; Bern Center for Precision Medicine (BCPM), University of Bern, 3010 Bern, Switzerland
| | - Gregory Costain
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada; Program in Genetics and Genome Biology, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada; Department of Paediatrics, University of Toronto, Toronto, ON M5G 1X8, Canada
| | - Chantal F Morel
- The Fred A. Litwin Family Centre in Genetic Medicine, University Health Network and Mount Sinai Hospital, Toronto, ON, M5T 3L9, Canada; Department of Medicine, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - Lauren Massingham
- Division of Human Genetics, Department of Pediatrics, Warren Alpert Medical School of Brown University, Hasbro Children's Hospital/Rhode Island Hospital, Providence, RI 02905, USA
| | - Jennifer Schwab
- Division of Human Genetics, Department of Pediatrics, Warren Alpert Medical School of Brown University, Hasbro Children's Hospital/Rhode Island Hospital, Providence, RI 02905, USA
| | - Chloé Quélin
- Clinical Genetics Department, CHU Hôspital Sud, Rennes 35203, France
| | - Marie Faoucher
- Service de Génétique Moléculaire et Génomique, CHU, Rennes 35033, France; Univ Rennes, CNRS, IGDR, UMR 6290, Rennes 35000, France
| | - Julie Kaplan
- Division of Genetics, Department of Pediatrics, Nemours/Alfred I. DuPont Hospital for Children, Wilmington, DE 19803, USA
| | - Rebecca Procopio
- Division of Genetics, Department of Pediatrics, Nemours/Alfred I. DuPont Hospital for Children, Wilmington, DE 19803, USA
| | - Carol J Saunders
- Genomic Medicine Center, Department of Pathology and Laboratory Medicine, Children's Mercy Kansas City, Kansas City, MO 64108, USA; University of Missouri-Kansas City School of Medicine, Kansas City, MO 64108, USA
| | - Ana S A Cohen
- Genomic Medicine Center, Department of Pathology and Laboratory Medicine, Children's Mercy Kansas City, Kansas City, MO 64108, USA; University of Missouri-Kansas City School of Medicine, Kansas City, MO 64108, USA
| | - Gabrielle Lemire
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Stephanie Sacharow
- Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Anne O'Donnell-Luria
- Broad Center for Mendelian Genomics, Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Ranit Jaron Segal
- Schneider Children's Medical Center of Israel, Petach Tikvah 49100, Israel
| | - Jessica Kianmahd Shamshoni
- Division of Medical Genetics, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| | - Daniela Schweitzer
- Division of Medical Genetics, Department of Pediatrics, David Geffen School of Medicine, UCLA, Los Angeles, CA 90095, USA
| | - Darius Ebrahimi-Fakhari
- Movement Disorders Program, Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | | | | | | | - Alice Tao
- Columbia University Vagelos College of Physicians and Surgeons, New York, NY 10032, USA
| | - Bertrand Isidor
- Department of Medical Genetics, CHU Nantes, 44093 Nantes, France
| | | | - André Reis
- Institute of Human Genetics, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany; Centre for Rare Diseases Erlangen (ZSEER), University Hospital Erlangen, Friedrich-Alexander University of Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Heinrich Sticht
- Institut für Biochemie, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91054 Erlangen, Germany
| | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University, New York, NY 10032, USA
| | - Christiane Zweier
- Department of Human Genetics, Inselspital Bern, University of Bern, 3010 Bern, Switzerland; Department for Biomedical Research (DBMR), University of Bern, 3010 Bern, Switzerland; Bern Center for Precision Medicine (BCPM), University of Bern, 3010 Bern, Switzerland.
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3
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Houissa Ediss H, Reignier A, Lammers J, Moradkhani K, Freour T, Loubersac S. P-539 Effects of gender of chromosomal translocation's carrier on pre-implantation genetic testing for structural rearrangement (PGT-SR) outcomes. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
Do the outcomes of PGT-SR cycles vary according to the gender of chromosomal translocation’s carrier?
Summary answer
The rate of balanced embryos was significantly higher when translocation carrier was a male as compared to female, but clinical outcomes were not significantly different.
What is known already
It has been well described that chromosomal translocations lead to very high rate of unbalanced embryos, and have a subsequent negative impact on blastulation, implantation, miscarriage and live birth rates.PGT-SR allows selecting balanced embryos and increases the chances of pregnancy, while decreasing the risk of micarriage in couples with chromosomal translocations. However, whether the gender of translocation carrier is associated with significantly different impact on PGT-SR outcomes is not known.
Study design, size, duration
This is a monocentric retrospective cross-sectional study conducted in all PGT-SR cycles performed between 2015 and 2020.
A total of 603 cycles, carried out in 283 couples, were included in the analysis.
Participants/materials, setting, methods
Two groups have been formed according to the gender of translocation carrier, Group 1 for female carriers (107 couples, 229 cycles), and group 2 for male (175 couples, 373 cycles).
The rate of balanced embryos, ovarian stimulation parameters, number of oocytes, biopsy rate, clinical pregnancy rate and live birth rate were compared between both groups.
Main results and the role of chance
Female age and infertility etiologies were comparable between both groups.
Mean total dose of gonadotrophin and peak E2 levels were not significantly different in both groups (2422± 895 units vs 2290 ± 858 respectively, p > 0.05) (2460± 1346 pg/ml vs 2497 ± 1397, p > 0.05). There was no significant difference in the number of oocytes and biopsied embryos rate between Group 1 and Group 2.
The rate of balanced embryo after PGT-SR was significantly lower in group 1 (female carriers) than in group 2 (21.1% vs 24.8% respectively, p = 0.036). Finally, biochemical pregnancy rate and live birth rate per transfer were not statistically different between both groups (46.2% vs 43.2% and 20.3% vs 18.5% respectively, p > 0.05).
Limitations, reasons for caution
The retrospective nature of the study was its main limitation. PGT-A was not used, preventing from concluding on embryo euploidy rate.
Wider implications of the findings
Further fundamental studies should be performed to explore the respective mechanisms involved in chromosomal rearrangements according to gender. Our study suggests that a higher number of oocytes could be targeted in female translocation carriers in order to increase the probability of obtaining at least one balanced embryo.
Trial registration number
2
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Affiliation(s)
- H Houissa Ediss
- University Hospital of Nantes, Department of Biology and Reproductive Medicine , Nantes, France
| | - A Reignier
- University Hospital of Nantes, Department of Biology and Reproductive Medicine , Nantes, France
| | - J Lammers
- University Hospital of Nantes, Department of Biology and Reproductive Medicine , Nantes, France
| | - K Moradkhani
- University Hospital of Nantes, Department of Medical Genetics , Nantes, France
| | - T Freour
- University Hospital of Nantes, Department of Biology and Reproductive Medicine , Nantes, France
| | - S Loubersac
- University Hospital of Nantes, Department of Biology and Reproductive Medicine , Nantes, France
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4
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Lévy J, Cogan G, Maruani A, Maillard A, Dupont C, Drunat S, Rachid M, Atzori P, Delorme R, Jeyarajah S, Isidor B, Pichon O, Moradkhani K, Verloes A, Tabet AC. Rare and de novo duplications containing TCF20 are associated with a neurodevelopmental disorder. Clin Genet 2021; 101:364-370. [PMID: 34904221 DOI: 10.1111/cge.14099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 09/21/2021] [Revised: 12/07/2021] [Accepted: 12/08/2021] [Indexed: 11/30/2022]
Abstract
Transcriptor co-activator factor 20 gene (TCF20) encodes a nuclear chromatin-binding protein involved in regulation of gene expression. In human pathology, pathogenic variants or deletions in TCF20 were identified in patients with developmental delay, variable intellectual disability and behavioral impairment (OMIM: 618430). The shared core phenotype includes developmental delay, hypotonia, motor delay, autism spectrum disorders, neurobehavioral anomalies, neurological features such as ataxia, seizures, movement disorders, structural brain anomalies, craniofacial features and various congenital anomalies. Most pathogenic variants are loss-of-function variants. Duplication including TCF20 was suspected to cause a neurodevelopmental disorder (NDD) with mirror traits compared to patients with TCF20 deletions. In the present study, we report three patients from three unrelated families with NDD with a de novo duplication at 22q13.2 encompassing TCF20. We propose that the TCF20 duplication could be involved in a new 22q13.2 microduplication syndrome with high penetrance, enlarging the genotype-phenotype knowledge of TCF20-associated NDDs.
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Affiliation(s)
- Jonathan Lévy
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | - Guillaume Cogan
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | - Anna Maruani
- Department of Child and Adolescent Psychiatry, Robert Debré Hospital, APHP, Paris, France
| | - Arnaud Maillard
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | - Céline Dupont
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | - Séverine Drunat
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France.,INSERM U1141, Robert-Debré University Hospital, Paris, France
| | - Myriam Rachid
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | - Paola Atzori
- Department of Child and Adolescent Psychiatry, Robert Debré Hospital, APHP, Paris, France
| | - Richard Delorme
- Department of Child and Adolescent Psychiatry, Robert Debré Hospital, APHP, Paris, France
| | - Sabatini Jeyarajah
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | | | - Olivier Pichon
- Service de Génétique Médicale, CHU Nantes, Nantes, France
| | | | - Alain Verloes
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France.,INSERM U1141, Robert-Debré University Hospital, Paris, France
| | - Anne-Claude Tabet
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France.,Neuroscience Department, Human Genetics and Cognitive Function Unit, Pasteur Institute, Paris, France
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5
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Latypova X, Vincent M, Mollé A, Adebambo OA, Fourgeux C, Khan TN, Caro A, Rosello M, Orellana C, Niyazov D, Lederer D, Deprez M, Capri Y, Kannu P, Tabet AC, Levy J, Aten E, den Hollander N, Splitt M, Walia J, Immken LL, Stankiewicz P, McWalter K, Suchy S, Louie RJ, Bell S, Stevenson RE, Rousseau J, Willem C, Retiere C, Yang XJ, Campeau PM, Martinez F, Rosenfeld JA, Le Caignec C, Küry S, Mercier S, Moradkhani K, Conrad S, Besnard T, Cogné B, Katsanis N, Bézieau S, Poschmann J, Davis EE, Isidor B. Haploinsufficiency of the Sin3/HDAC corepressor complex member SIN3B causes a syndromic intellectual disability/autism spectrum disorder. Am J Hum Genet 2021; 108:929-941. [PMID: 33811806 DOI: 10.1016/j.ajhg.2021.03.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 03/18/2021] [Indexed: 11/28/2022] Open
Abstract
Proteins involved in transcriptional regulation harbor a demonstrated enrichment of mutations in neurodevelopmental disorders. The Sin3 (Swi-independent 3)/histone deacetylase (HDAC) complex plays a central role in histone deacetylation and transcriptional repression. Among the two vertebrate paralogs encoding the Sin3 complex, SIN3A variants cause syndromic intellectual disability, but the clinical consequences of SIN3B haploinsufficiency in humans are uncharacterized. Here, we describe a syndrome hallmarked by intellectual disability, developmental delay, and dysmorphic facial features with variably penetrant autism spectrum disorder, congenital malformations, corpus callosum defects, and impaired growth caused by disruptive SIN3B variants. Using chromosomal microarray or exome sequencing, and through international data sharing efforts, we identified nine individuals with heterozygous SIN3B deletion or single-nucleotide variants. Five individuals harbor heterozygous deletions encompassing SIN3B that reside within a ∼230 kb minimal region of overlap on 19p13.11, two individuals have a rare nonsynonymous substitution, and two individuals have a single-nucleotide deletion that results in a frameshift and predicted premature termination codon. To test the relevance of SIN3B impairment to measurable aspects of the human phenotype, we disrupted the orthologous zebrafish locus by genome editing and transient suppression. The mutant and morphant larvae display altered craniofacial patterning, commissural axon defects, and reduced body length supportive of an essential role for Sin3 function in growth and patterning of anterior structures. To investigate further the molecular consequences of SIN3B variants, we quantified genome-wide enhancer and promoter activity states by using H3K27ac ChIP-seq. We show that, similar to SIN3A mutations, SIN3B disruption causes hyperacetylation of a subset of enhancers and promoters in peripheral blood mononuclear cells. Together, these data demonstrate that SIN3B haploinsufficiency leads to a hitherto unknown intellectual disability/autism syndrome, uncover a crucial role of SIN3B in the central nervous system, and define the epigenetic landscape associated with Sin3 complex impairment.
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Affiliation(s)
- Xenia Latypova
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; Center for Human Disease Modeling, Duke University Medical Center, Durham, NC 27701, USA; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Marie Vincent
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Alice Mollé
- Université de Nantes, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, 44000 Nantes, France
| | | | - Cynthia Fourgeux
- Université de Nantes, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, 44000 Nantes, France
| | - Tahir N Khan
- Center for Human Disease Modeling, Duke University Medical Center, Durham, NC 27701, USA; Department of Biological Sciences, National University of Medical Sciences, 46000 Rawalpindi, Pakistan
| | - Alfonso Caro
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
| | - Monica Rosello
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
| | - Carmen Orellana
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
| | - Dmitriy Niyazov
- Department of Pediatrics, Ochsner Clinic, New Orleans, LA 70128, USA
| | - Damien Lederer
- Centre de Génétique Humaine, IPG, 6041 Gosselies, Belgium
| | - Marie Deprez
- Service de Neuropédiatrie, Clinique Saint Elizabeth, 5000 Namur, Belgium
| | - Yline Capri
- Service de Génétique Médicale, Hôpital Robert Debré, 75019 Paris, France
| | - Peter Kannu
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | | | - Jonathan Levy
- Service de Cytogénétique, Hôpital Robert Debré, 75019 Paris, France
| | - Emmelien Aten
- Department of Clinical Genetics, Leiden University Medical Center, 2333 Leiden, the Netherlands
| | - Nicolette den Hollander
- Department of Clinical Genetics, Leiden University Medical Center, 2333 Leiden, the Netherlands
| | - Miranda Splitt
- Northern Genetics Service, Institute of Genetic Medicine, Newcastle Upon Tyne NE1 3BZ, UK
| | - Jagdeep Walia
- Kingston General Hospital Research Institute, 76 Stuart Street, Kingston, ON K7L 2V7, Canada
| | - Ladonna L Immken
- Clinical Genetics, Dell Children's Medical Group, Austin, TX 78731, USA
| | - Pawel Stankiewicz
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | | | - Sharon Suchy
- GeneDx, 207 Perry Parkway, Gaithersburg, MD 20877, USA
| | - Raymond J Louie
- Greenwood Genetic Center, 106 Gregor Mendel Cir, Greenwood, SC 29646, USA
| | - Shannon Bell
- Greenwood Genetic Center, 106 Gregor Mendel Cir, Greenwood, SC 29646, USA
| | - Roger E Stevenson
- Greenwood Genetic Center, 106 Gregor Mendel Cir, Greenwood, SC 29646, USA
| | - Justine Rousseau
- Sainte-Justine Hospital, 3175, Cote-Sainte-Catherine, Montreal, QC, Canada
| | | | - Christelle Retiere
- Etablissement Français du Sang, 44000 Nantes, France; CRCINA, INSERM, CNRS, Université d'Angers, Université de Nantes, 44000 Nantes, France; LabEx IGO, Nantes 44000, France
| | - Xiang-Jiao Yang
- Rosalind & Morris Goodman Cancer Research Center and Department of Medicine, McGill University, Montreal, QC H3A 1A3, Canada
| | - Philippe M Campeau
- Sainte-Justine Hospital, 3175, Cote-Sainte-Catherine, Montreal, QC, Canada
| | - Francisco Martinez
- Unidad de Genética, Grupo de Investigación Traslacional en Genética, Hospital Universitario y Politécnico La Fe, 46026 Valencia, Spain
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Cédric Le Caignec
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Sébastien Küry
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Sandra Mercier
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Kamran Moradkhani
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France
| | - Solène Conrad
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France
| | - Thomas Besnard
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Benjamin Cogné
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Nicholas Katsanis
- Center for Human Disease Modeling, Duke University Medical Center, Durham, NC 27701, USA; Advanced Center for Translational and Genetic Medicine, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA; Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Stéphane Bézieau
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France
| | - Jeremie Poschmann
- Université de Nantes, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, 44000 Nantes, France.
| | - Erica E Davis
- Advanced Center for Translational and Genetic Medicine, Stanley Manne Children's Research Institute, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL 60611, USA; Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
| | - Bertrand Isidor
- Service de Génétique Médicale, CHU Nantes, 9 quai Moncousu, 44093 Nantes Cedex 1, France; L'Institut du Thorax, INSERM, CNRS, Université de Nantes, 44007 Nantes, France.
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6
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Myers L, Blyth M, Moradkhani K, Hranilović D, Polesie S, Isaksson J, Nordgren A, Bucan M, Vincent M, Bölte S, Anderlid BM, Tammimies K. Variable neurodevelopmental and morphological phenotypes of carriers with 12q12 duplications. Mol Genet Genomic Med 2019; 8:e1013. [PMID: 31730283 PMCID: PMC6978403 DOI: 10.1002/mgg3.1013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/18/2019] [Accepted: 09/25/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Variable size deletions affecting 12q12 have been found in individuals with neurodevelopmental disorders (NDDs) and distinct facial and physical features. For many genetic loci affected by deletions in individuals with NDDs, reciprocal duplications have been described. However, for the 12q12 region, there are no detailed descriptions of duplication cases in the literature. METHODS We report a phenotypic description of a family with monozygotic twins diagnosed with NDDs, carrying a 9 Mb duplication at 12q12, and five other individuals with overlapping duplications ranging from 4.54 Mb up to 15.16 Mb. RESULTS The duplication carriers had language delays, cognitive delays, and were diagnosed with autism spectrum disorder. Additionally, distinct facial features (e.g., high foreheads, deeply set eyes, short palpebral fissures, small ears, high nasal bridges, abnormalities of the nose tip, thin lips), large feet, and abnormalities in the digits were noted. We also describe incomplete penetrance of the NDD phenotypes among the individuals with 12q12 duplication. CONCLUSION This case series expands our knowledge on this rare genetic aberration and suggests that large 12q12 duplications may increase the risk for developing NDDs.
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Affiliation(s)
- Lynnea Myers
- Center of Neurodevelopmental Disorders (KIND), Centre for Psychiatry Research, Department of Women's and Children's Health, Karolinska Institutet & Child and Adolescent Psychiatry, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - Moira Blyth
- Department of Clinical Genetics, Chapel Allerton Hospital, Leeds, UK
| | | | - Dubravka Hranilović
- Department of Biology, Faculty of Science, University of Zagreb, Zagreb, Croatia
| | - Sam Polesie
- Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Dermatology and Venereology, Region Västra Götaland, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Johan Isaksson
- Center of Neurodevelopmental Disorders (KIND), Centre for Psychiatry Research, Department of Women's and Children's Health, Karolinska Institutet & Child and Adolescent Psychiatry, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden.,Department of Neuroscience, Child and Adolescent Psychiatry and Psychiatry Unit, Uppsala University, Uppsala, Sweden
| | - Ann Nordgren
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Maja Bucan
- Department of Genetics and Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Marie Vincent
- Centre Hospitalier, University of Nantes, Nantes, France
| | - Sven Bölte
- Center of Neurodevelopmental Disorders (KIND), Centre for Psychiatry Research, Department of Women's and Children's Health, Karolinska Institutet & Child and Adolescent Psychiatry, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden.,Curtin Autism Research Group, School of Occupational Therapy, Social Work and Speech Pathology, Curtin University, Perth, Western Australia, Australia
| | - Britt-Marie Anderlid
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.,Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden
| | - Kristiina Tammimies
- Center of Neurodevelopmental Disorders (KIND), Centre for Psychiatry Research, Department of Women's and Children's Health, Karolinska Institutet & Child and Adolescent Psychiatry, Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
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7
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Guterman S, Beneteau C, Redon S, Dupont C, Missirian C, Jaeger P, Herve B, Jacquin C, Douet-Guilbert N, Till M, Tabet AC, Moradkhani K, Malan V, Doco-Fenzy M, Vialard F. Prenatal findings in 1p36 deletion syndrome: New cases and a literature review. Prenat Diagn 2019; 39:871-882. [PMID: 31172545 DOI: 10.1002/pd.5498] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 03/21/2019] [Accepted: 05/18/2019] [Indexed: 11/12/2022]
Abstract
OBJECTIVE/METHOD 1p36 deletion syndrome is considered to be the most common deletion after 22q11.2 deletion. It is characterized by specific facial features, developmental delay, and organ defects. The primary objective of the present multicenter study was to survey all the cases of 1p36 deletion diagnosed prenatally by French cytogenetics laboratories using a chromosomal microarray. We then compared these new cases with the literature data. RESULTS Ten new cases were reported. On average, the 1p36 deletion was diagnosed at 19 weeks of gestation. The size of the deletion ranged from 1.6 to 16 Mb. The 1p36 deletion was the only chromosomal abnormality in eight cases and was associated with a complex chromosome 1 rearrangement in the two remaining cases. The invasive diagnostic procedure had always been prompted by abnormal ultrasound findings: elevated nuchal translucency, structural brain abnormality, retrognathia, or a cardiac defect. Multiple anomalies were present in all cases. DISCUSSION We conclude that 1p36 deletion is not associated with any specific prenatal signs. We suggest that a prenatal observation of ventriculomegaly, congenital heart defect, or facial dysmorphism should prompt the clinician to consider a diagnosis of 1p36 deletion syndrome.
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Affiliation(s)
- Sarah Guterman
- Fédération de Génétique, Centre Hospitalier Intercommunal Poissy-St-Germain-en-Laye, Poissy, France
- EA-7404-GIG, UFR des Sciences de la santé Simone VEIL, UVSQ, Montigny le Bretonneux, France
| | - Claire Beneteau
- Service de Génétique Médicale, CHU de Nantes, Nantes, France
| | - Sylvia Redon
- Laboratoire de Génétique Moléculaire, CHU de Brest, Brest, France
| | - Céline Dupont
- Unité de Cytogénétique, Hôpital Robert Debré, Paris, France
| | - Chantal Missirian
- Unité de Génétique Clinique, CHU Marseille-Hôpital de la Timone, Marseille, France
| | - Pauline Jaeger
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
| | - Berenice Herve
- Fédération de Génétique, Centre Hospitalier Intercommunal Poissy-St-Germain-en-Laye, Poissy, France
- EA-7404-GIG, UFR des Sciences de la santé Simone VEIL, UVSQ, Montigny le Bretonneux, France
| | | | | | - Marianne Till
- Service de Génétique, Hospices Civils de Lyon, Lyon, France
| | | | | | - Valérie Malan
- Service d'Histologie-Embryologie-Cytogénétique, Hôpital Necker-Enfants Malades, APHP, Paris, France
| | - Martine Doco-Fenzy
- Service de Génétique, CHU de Reims, Reims, France
- EA3801, SFR CAP Santé, Reims, France
| | - François Vialard
- Fédération de Génétique, Centre Hospitalier Intercommunal Poissy-St-Germain-en-Laye, Poissy, France
- EA-7404-GIG, UFR des Sciences de la santé Simone VEIL, UVSQ, Montigny le Bretonneux, France
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8
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Moradkhani K, Cuisset L, Boisseau P, Pichon O, Lebrun M, Hamdi-Rozé H, Maurin ML, Gruchy N, Manca-Pellissier MC, Malzac P, Bilan F, Audrezet MP, Saugier-Veber P, Fauret-Amsellem AL, Missirian C, Kuentz P, Egea G, Guichet A, Creveaux I, Janel C, Harzallah I, Touraine R, Goumy C, Joyé N, Puechberty J, Haquet E, Chantot-Bastaraud S, Schmitt S, Gosset P, Duban-Bedu B, Delobel B, Vago P, Vialard F, Gomes DM, Siffroi JP, Bonnefont JP, Dupont JM, Jonveaux P, Doco-Fenzy M, Sanlaville D, Le Caignec C. Risk estimation of uniparental disomy of chromosome 14 or 15 in a fetus with a parent carrying a non-homologous Robertsonian translocation. Should we still perform prenatal diagnosis? Prenat Diagn 2019; 39:986-992. [PMID: 31273809 DOI: 10.1002/pd.5518] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 06/07/2019] [Accepted: 06/28/2019] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Uniparental disomy (UPD) testing is currently recommended during pregnancy in fetuses carrying a balanced Robertsonian translocation (ROB) involving chromosome 14 or 15, both chromosomes containing imprinted genes. The overall risk that such a fetus presents a UPD has been previously estimated to be around ~0.6-0.8%. However, because UPD are rare events and this estimate has been calculated from a number of studies of limited size, we have reevaluated the risk of UPD in fetuses for whom one of the parents was known to carry a nonhomologous ROB (NHROB). METHOD We focused our multicentric study on NHROB involving chromosome 14 and/or 15. A total of 1747 UPD testing were performed in fetuses during pregnancy for the presence of UPD(14) and/or UPD(15). RESULT All fetuses were negative except one with a UPD(14) associated with a maternally inherited rob(13;14). CONCLUSION Considering these data, the risk of UPD following prenatal diagnosis of an inherited ROB involving chromosome 14 and/or 15 could be estimated to be around 0.06%, far less than the previous estimation. Importantly, the risk of miscarriage following an invasive prenatal sampling is higher than the risk of UPD. Therefore, we do not recommend prenatal testing for UPD for these pregnancies and parents should be reassured.
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Affiliation(s)
| | - Laurence Cuisset
- Laboratory of Genetics and Molecular Biology, Institute Cochin and Cochin Hospital, APHP, Paris Descartes University, Paris, France
| | | | - Olivier Pichon
- Service de Génétique Médicale, CHU Nantes, Nantes, France
| | - Marine Lebrun
- Service de Génétique-Laboratoire de Biologie Moléculaire, CHU-Hôpital Nord, Saint-Etienne, France
| | - Houda Hamdi-Rozé
- Department of Molecular Genetics and Genomics, CHU Rennes, Rennes, France
| | - Marie-Laure Maurin
- Service d'Histologie, Embryologie, Cytogénétique., Groupe Hospitalier Necker-Enfants Malades, Paris, France
| | - Nicolas Gruchy
- Service de Génétique, CHU Caen, Université Caen Normandie, Caen, France
| | | | - Perrine Malzac
- Département de Génétique Médicale, Assistance Publique- Hôpitaux de Marseille, Marseille, France
| | | | | | - Pascale Saugier-Veber
- Department of Genetics, Normandy Centre for Genomic Medicine and Personalized Medicine, Rouen University Hospital, Rouen, France
| | - Anne-Laure Fauret-Amsellem
- Department of Genetics, Robert-Debré Teaching Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Chantal Missirian
- Département de Génétique Médicale, Assistance Publique- Hôpitaux de Marseille, Marseille, France
| | - Paul Kuentz
- Génétique Biologique Histologie, Centre Hospitalier Universitaire de Besançon, Besançon, France
| | - Gregory Egea
- Laboratoire de Biologie Médicale GEN-BIO, Clermont-Ferrand, France
| | | | - Isabelle Creveaux
- Department of Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Caroline Janel
- Department of Biochemistry and Molecular Genetics, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Ines Harzallah
- Service de Génétique-Laboratoire de Biologie Moléculaire, CHU-Hôpital Nord, Saint-Etienne, France
| | - Renaud Touraine
- Service de Génétique-Laboratoire de Biologie Moléculaire, CHU-Hôpital Nord, Saint-Etienne, France
| | - Carole Goumy
- Cytogénétique Médicale, CHU Estaing, Clermont-Ferrand, France.,U1240 Imagerie Moléculaire et Stratégies Théranostiques, Université Clermont Auvergne, INSERM, Clermont-Ferrand, France
| | - Nicole Joyé
- Physiopathologie des Maladies Génétiques d'Expression Pédiatrique, Sorbonne Université, INSERM, Paris, France
| | - Jacques Puechberty
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Hôpital Arnaud de Villeneuve, CHU de Montpellier, Montpellier, France
| | - Emmanuelle Haquet
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Hôpital Arnaud de Villeneuve, CHU de Montpellier, Montpellier, France
| | | | | | - Philippe Gosset
- Diagnostic Préimplantatoire, Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Bénédicte Duban-Bedu
- Centre de Génétique Chromosomique, GH de l'Institut Catholique de Lille-Hopital Saint Vincent de Paul, Lille, France
| | - Bruno Delobel
- Centre de Génétique Chromosomique, GH de l'Institut Catholique de Lille-Hopital Saint Vincent de Paul, Lille, France
| | - Philippe Vago
- Cytogénétique Médicale, CHU Estaing, Clermont-Ferrand, France.,U1240 Imagerie Moléculaire et Stratégies Théranostiques, Université Clermont Auvergne, INSERM, Clermont-Ferrand, France
| | - François Vialard
- Unité de Cytogénétique, CHI de Poissy St Germain en Laye, Poissy, France.,EA7404-GIG, UFR des Sciences de la Santé Simone Veil, UVSQ, Montigny-le-Bretonneux, France
| | - Denise Molina Gomes
- Unité de Cytogénétique, CHI de Poissy St Germain en Laye, Poissy, France.,EA7404-GIG, UFR des Sciences de la Santé Simone Veil, UVSQ, Montigny-le-Bretonneux, France
| | - Jean-Pierre Siffroi
- Physiopathologie des Maladies Génétiques d'Expression Pédiatrique, Sorbonne Université, INSERM, Paris, France
| | - Jean-Paul Bonnefont
- Service d'Histologie, Embryologie, Cytogénétique., Groupe Hospitalier Necker-Enfants Malades, Paris, France
| | - Jean-Michel Dupont
- Laboratoire de Cytogénétique, HUPC Hôpital Cochin, APHP; Université Paris Descartes, Paris, France
| | - Philippe Jonveaux
- Laboratoire de Génétique, CHRU Nancy, Inserm U1256, Université de Lorraine, Nancy, France
| | - Martine Doco-Fenzy
- Service de Génétique, CHU REIMS, EA3801, UFR de Médecine REIMS, Reims, France
| | - Damien Sanlaville
- Department of Genetics, Lyon University Hospitals, Lyon, France.,Claude Bernard Lyon I University; Lyon Neuroscience Research Centre, CNRS UMR5292, INSERM, Lyon, France
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9
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Conrad S, Demurger F, Moradkhani K, Pichon O, Le Caignec C, Pascal C, Thomas C, Bayart S, Perlat A, Dubourg C, Jaillard S, Nizon M. 11q24.2q24.3 microdeletion in two families presenting features of Jacobsen syndrome, without intellectual disability: Role of FLI1, ETS1, and SENCR long noncoding RNA. Am J Med Genet A 2019; 179:993-1000. [PMID: 30888095 DOI: 10.1002/ajmg.a.61113] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 11/22/2018] [Revised: 01/27/2019] [Accepted: 02/11/2019] [Indexed: 12/29/2022]
Abstract
This report presents two families with interstitial 11q24.2q24.3 deletion, associated with malformations, hematologic features, and typical facial dysmorphism, observed in Jacobsen syndrome (JS), except for intellectual disability (ID). The smallest 700 Kb deletion contains only two genes: FLI1 and ETS1, and a long noncoding RNA, SENCR, narrowing the minimal critical region for some features of JS. Consistent with recent literature, it adds supplemental data to confirm the crucial role of FLI1 and ETS1 in JS, namely FLI1 in thrombocytopenia and ETS1 in cardiopathy and immune deficiency. It also supports that combined ETS1 and FLI1 haploinsufficiency explains dysmorphic features, notably ears, and nose anomalies. Moreover, it raises the possibility that SENCR, a long noncoding RNA, could be responsible for limb defects, because of its early role in endothelial cell commitment and function. Considering ID and autism spectrum disorder, which are some of the main features of JS, a participation of ETS1, FLI1, or SENCR cannot be excluded. But, considering the normal neurodevelopment of our patients, their role would be either minor or with an important variability in penetrance. Furthermore, according to literature, ARHGAP32 and KIRREL3 seem to be the strongest candidate genes in the 11q24 region for other Jacobsen patients.
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Affiliation(s)
| | | | | | | | - Cédric Le Caignec
- Service de Génétique Médicale, CHU Nantes, France.,INSERM, CNRS, UNIV Nantes, l'Institut du Thorax, Nantes, France
| | - Cécile Pascal
- Service de Cardiologie pédiatrique et fœtale, Hôpital privé du Confluent, Nantes, France
| | | | - Sophie Bayart
- Centre de traitement des maladies hémorragiques, CHU Rennes, France
| | - Antoinette Perlat
- Service de Médecine Interne-Immunologie Clinique, CHU de Rennes, France
| | - Christèle Dubourg
- Service de Génétique Moléculaire et Génomique, CHU Rennes, France.,Univ Rennes, CNRS, IGDR (Institut de génétique et développement de Rennes), UMR 6290, Rennes, France
| | - Sylvie Jaillard
- CHU Rennes, Service de Cytogénétique et Biologie Cellulaire, F-35033, Rennes, France.,INSERM U1085-IRSET, Université de Rennes 1, Rennes, France
| | - Mathilde Nizon
- Service de Génétique Médicale, CHU Nantes, France.,INSERM, CNRS, UNIV Nantes, l'Institut du Thorax, Nantes, France
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10
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Lammers J, Reignier A, Splingart C, Moradkhani K, Barrière P, Fréour T. Morphokinetic parameters in chromosomal translocation carriers undergoing preimplantation genetic testing. Reprod Biomed Online 2019; 38:177-183. [DOI: 10.1016/j.rbmo.2018.11.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 11/08/2018] [Accepted: 11/09/2018] [Indexed: 10/27/2022]
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11
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Bhatt SS, Manvelyan M, Moradkhani K, Hunstig F, Mrasek K, Puechberty J, Lefort G, Sarda P, Weise A, Liehr T, Pellestor F. Inverted segment size and the presence of recombination hot spot clusters matter in sperm segregation analysis. Cytogenet Genome Res 2013; 142:145-9. [PMID: 24217531 DOI: 10.1159/000356142] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2013] [Indexed: 11/19/2022] Open
Affiliation(s)
- S S Bhatt
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
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12
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Giardine B, Borg J, Viennas E, Pavlidis C, Moradkhani K, Joly P, Bartsakoulia M, Riemer C, Miller W, Tzimas G, Wajcman H, Hardison RC, Patrinos GP. Updates of the HbVar database of human hemoglobin variants and thalassemia mutations. Nucleic Acids Res 2013; 42:D1063-9. [PMID: 24137000 PMCID: PMC3964999 DOI: 10.1093/nar/gkt911] [Citation(s) in RCA: 318] [Impact Index Per Article: 28.9] [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: 11/17/2022] Open
Abstract
HbVar (http://globin.bx.psu.edu/hbvar) is one of the oldest and most appreciated locus-specific databases launched in 2001 by a multi-center academic effort to provide timely information on the genomic alterations leading to hemoglobin variants and all types of thalassemia and hemoglobinopathies. Database records include extensive phenotypic descriptions, biochemical and hematological effects, associated pathology and ethnic occurrence, accompanied by mutation frequencies and references. Here, we report updates to >600 HbVar entries, inclusion of population-specific data for 28 populations and 27 ethnic groups for α-, and β-thalassemias and additional querying options in the HbVar query page. HbVar content was also inter-connected with two other established genetic databases, namely FINDbase (http://www.findbase.org) and Leiden Open-Access Variation database (http://www.lovd.nl), which allows comparative data querying and analysis. HbVar data content has contributed to the realization of two collaborative projects to identify genomic variants that lie on different globin paralogs. Most importantly, HbVar data content has contributed to demonstrate the microattribution concept in practice. These updates significantly enriched the database content and querying potential, enhanced the database profile and data quality and broadened the inter-relation of HbVar with other databases, which should increase the already high impact of this resource to the globin and genetic database community.
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Affiliation(s)
- Belinda Giardine
- The Pennsylvania State University, Center for Comparative Genomics and Bioinformatics, University Park, PA, USA, Department of Applied Biomedical Science, Faculty of Health Sciences, University of Malta, Msida, Malta, MGC-Department of Cell Biology and Genetics, Erasmus MC, Faculty of Medicine and Health Sciences, Rotterdam, The Netherlands, Department of Computer Engineering and Informatics, University of Patras, Faculty of Engineering, Patras, Greece, Department of Pharmacy, University of Patras, School of Health Sciences, Patras, Greece, Department of Medical Genetics, Laboratory of Cytogenetics, Institute of Biology, Nantes, France, Hôpital Edouard Herriot, Unité de Pathologie Moléculaire du Globule Rouge, Lyon, France, Department of Computer and Informatics Engineering, Technological Educational Institute of Western Greece, Patras, Greece, INSERM U955, CHU Henri Mondor, Creteil, France and Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA, USA
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13
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Abstract
Patients homozygous for Hb S need to be properly identified to start as early as possible a treatment that should avoid complications. For prevention and genetic counseling, carriers of Hb S have to be screened. Hb S is easily detected by several analytical systems, but other variants, usually harmless, may behave as Hb S, leading to false positive diagnosis. Some interactions may also cause difficulties in the qualitative or quantitative interpretation of a chromatography or electrophoresis profile. These problems may result from several causes among which the simultaneous presence of an α chain variant leading to the formation of tetramers having both an α and a β chain modified, the presence of a second mutation within the Hb S allele, the existence of a compound heterozygous state leading to some "Hb S trait with dominantly transmitted sickle cell disease (SCD)", and the presence of thalassemic allele affecting the intracellular proportion of Hb S. In case of any "dominant Hb S trait" a thorough Hb study is always required. This work reports some of the difficulties observed by us, or reported in the literature, and propose how to avoid them and reach a correct diagnosis.
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Affiliation(s)
- Kamran Moradkhani
- AP-HP, Hôpital H. Mondor-A. Chenevier, Service de Biochimie et Génétique, Créteil, France
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14
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Benmansour I, Moradkhani K, Moumni I, Wajcman H, Hafsia R, Ghanem A, Abbès S, Préhu C. Two new class III G6PD variants [G6PD Tunis (c.920A>C: p.307Gln>Pro) and G6PD Nefza (c.968T>C: p.323 Leu>Pro)] and overview of the spectrum of mutations in Tunisia. Blood Cells Mol Dis 2012; 50:110-4. [PMID: 22963789 DOI: 10.1016/j.bcmd.2012.08.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 08/01/2012] [Accepted: 08/06/2012] [Indexed: 11/18/2022]
Abstract
We screened 423 patients referred to our laboratory after hemolysis triggered by fava beans ingestion, neonatal jaundice or drug hemolysis. Others were asymptomatic but belonged to a family with a history of G6PD deficiency. The determination of enzymatic activity using spectrophotometric method, revealed 293 deficient (143 males and 150 females). The molecular analysis was performed by a combination of PCR-RFLP and DNA sequencing to characterize the mutations causing G6PD deficiency. 14 different genotypes have been identified : G6PD A(-) (376A>G;202G>A) (46.07%) and G6PD Med (33.10%) were the most common variants followed by G6PD Santamaria (5.80%), G6PD Kaiping (3.75%), the association [c.1311T and IVS11 93c] (3.75%), G6PD Chatham (2.04%), G6PD Aures (1.70%), G6PD A(-) Betica (0.68%), the association [ 376G;c.1311T;IVS11 93c] (0.68%), G6PD Malaga, G6PD Canton and G6PD Abeno respectively (0.34%). Two novel missense mutations were identified (c.920A>C: p.307Gln>Pro and c.968T>C: p.323 Leu>Pro). We designated these two class III variants as G6PD Tunis and G6PD Nefza. A mechanism which could account for the defective activity is discussed.
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Affiliation(s)
- Ikbel Benmansour
- Laboratoire d'hématologie moléculaire et cellulaire, Institut Pasteur de Tunis, 13 place Pasteur, Tunis-Le-Belvédère, Tunisia.
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15
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Ghedira ES, Lecerf L, Faubert E, Costes B, Moradkhani K, Bachir D, Galactéros F, Pissard S. Estimation of the difference in HbF expression due to loss of the 5' δ-globin BCL11A binding region. Haematologica 2012; 98:305-8. [PMID: 22801970 DOI: 10.3324/haematol.2012.061994] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
BCL11A was the focus of recent studies on its inhibiting effect when bound onto the β-globin cluster in the mechanism of hemoglobin switching and HbF downregulation. We examined a cohort of 10 patients displaying different HbF levels and short deletions within the γβ-δ intergenic region to find a possible correlation with the BCL11A binding site located 5' to the δ-globin gene. Precise characterization of deletions was achieved using a custom DNA-array chip and breakpoint sequencing. The α-globin cluster and major SNP associated with HbF expression were genotyped. Our results show that the loss of the BCL11A binding domain located 5' to the δ-globin gene is correlated with a strong HbF difference (mean+2.7 g/dL, ratio 2.81). This result provides evidence for the use of BCL11A level down-regulation or this domain blockage for new therapies in sickle cell disease and β-thalassemia major patients.
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Affiliation(s)
- Elyes Slim Ghedira
- APHP-Molecular Genetics Department, Henri Mondor Hospital, Créteil, France
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16
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Moradkhani K, Mekki C, Bahuau M, Te VLT, Holder M, Pissard S, Préhu C, Rose C, Wajcman H, Galactéros F. Practical approach for characterization of glucose 6-phosphate dehydrogenase (G6PD) deficiency in countries with population ethnically heterogeneous: description of seven new G6PD mutants. Am J Hematol 2012; 87:208-10. [PMID: 22139979 DOI: 10.1002/ajh.22218] [Citation(s) in RCA: 6] [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] [Received: 09/30/2011] [Accepted: 10/04/2011] [Indexed: 11/12/2022]
Abstract
We present a rapid strategy based on Restriction Fragment Length Polymorphism (RFLP) analysis to characterize the more frequent glucose 6-phosphate dehydrogenase (G6PD) variants observed in a population with high gene flow. During a study involving more than 600 patients, we observed mainly G6PD A(-) (c.202G>A, c.376A>G; p.Val68Met, p.Asn126Asp), G6PD Mediterranean (Med) (c.563C>T, p.Ser188Phe), and G6PD Betica (c.376A>G, 542A>T; p.126Asn>Asp, 181Asp>Val) with addition of a few rare ones. A number of 10 abnormalities amounted to 92% of all the molecular defects. In addition, seven new mutations were found: three presented with acute hemolytic anemia following oxidative stress [G6PD Nice (c.1380G>C, p.Glu460Asp), G6PD Roubaix (c.811G>C, p.Val271Leu), and G6PD Toledo (c.496C>T, p.Arg166Cys)], three with different degrees of chronic hemolytic anemia [G6PD Lille (c.821A>T, p.Glu274Val), G6PD Villeurbanne (c.1000_1002delACC, p.Thr334del), and G6PD Amiens (c.1367A>T, p.Asp456Val)] and one found fortuitously G6PD Montpellier (c.1132G>A, p.Gly378Ser).
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Affiliation(s)
- Kamran Moradkhani
- AP-HP, Hôpital H. Mondor-A. Chenevier, Service de Biochimie et Génétique, Créteil 94000, France.
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Saller E, Moradkhani K, Dutly F, Vinatier I, Préhu C, Frischknecht H, Goossens M. Comparison of Two Known Chromosomal Rearrangements in the δβ-Globin Complex with Identical DNA Breakpoints but Causing Different Hb A2Levels. Hemoglobin 2012; 36:177-82. [DOI: 10.3109/03630269.2011.644651] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Al-Jaouni SK, Jarullah J, Azhar E, Moradkhani K. Molecular characterization of glucose-6-phosphate dehydrogenase deficiency in Jeddah, Kingdom of Saudi Arabia. BMC Res Notes 2011; 4:436. [PMID: 22018328 PMCID: PMC3208249 DOI: 10.1186/1756-0500-4-436] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 10/24/2011] [Indexed: 11/10/2022] Open
Abstract
Background The development of polymerase chain reaction (PCR)-based methods for the detection of known mutations has facilitated detecting specific red blood cell (RBC) enzyme deficiencies. We carried out a study on glucose-6-phosphate dehydrogenase (G6PD) deficient subjects in Jeddah to evaluate the molecular characteristics of this enzyme deficiency and the frequency of nucleotide1311 and IVS-XI-93 polymorphisms in the glucose-6-phosphate dehydrogenase gene. Results A total of 1584 unrelated Saudis (984 neonates and 600 adults) were screened for glucose-6-phosphate dehydrogenase deficiency. The prevalence of glucose-6-phosphate dehydrogenase deficiency was 6.9% (n = 110). G6PD Mediterranean mutation was observed in 98 (89.1%) cases, G6PD Aures in 11 (10.0%) cases, and G6PD Chatham in 1 (0.9%) case. None of the samples showed G6PD A‾ mutation. Samples from 29 deficient subjects (25 males and 4 females) were examined for polymorphism. The association of two polymorphisms of exon/intron 11 (c.1311T/IVS-XI-93C) was observed in 14 (42.4%) of 33 chromosomes studied. This association was found in 9 (31.0%) carriers of G6PD Mediterranean and in 4 (13.8%) carriers of G6PD Aures. Conclusions The majority of mutations were G6PD Mediterranean, followed by G6PD Aures and < 1% G6PD Chatham. We conclude that 1311T is a frequent polymorphism in subjects with G6PD Mediterranean and Aures variants in Jeddah.
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Affiliation(s)
- Soad K Al-Jaouni
- Hematology Research Lab, King Fahd Medical Research Centre, Faculty of Medicine, King Abdulaziz University, P,O, Box 80215, Jeddah 21589, Kingdom of Saudi Arabia.
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19
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Wajcman H, Moradkhani K. Abnormal haemoglobins: detection & characterization. Indian J Med Res 2011; 134:538-46. [PMID: 22089618 PMCID: PMC3237254] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Haemoglobin (Hb) abnormalities though quite frequent, are generally detected in populations during surveys and programmes run for prevention of Hb disorders. Several methods are now available for detection of Hb abnormalities. In this review, the following are discussed: (i) the methods used for characterization of haemoglobin disorders; (ii) the problems linked to diagnosis of thalassaemic trait; (iii) the strategy for detection of common Hb variants; and (iv) the difficulties in identification of rare variants. The differences between developing and industrialized countries for the strategies employed in the diagnosis of abnormal haemoglobins are considered. We mention the limits and pitfalls for each approach and the necessity to characterize the abnormalities using at least two different methods. The recommended strategy is to use a combination of cation-exchange high performance chromatography (CE-HPLC), capillary electrophoresis (CE) and when possible isoelectric focusing (IEF). Difficult cases may demand further investigations requiring specialized protein and/or molecular biology techniques.
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Affiliation(s)
- Henri Wajcman
- INSERM, Université Paris-Est, Faculté de Médecine, Créteil, France,Reprint requests: Dr Henri Wajcman, INSERM, Unité U955, Créteil, France e-mail:
| | - Kamran Moradkhani
- AP-HP, Groupe Henri-Mondor Albert-Chenevier, Service de Biochimie-Génétique, Créteil, France
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20
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Préhu C, Moradkhani K, Riou J, Bahuau M, Launay P, Martin N, Wajcman H, Goossens M, Galactéros F. Chronic hemolytic anemia due to novel alpha-globin chain variants: critical location of the mutation within the gene sequence for a dominant effect. Haematologica 2009; 94:1624-5. [PMID: 19815833 PMCID: PMC2770978 DOI: 10.3324/haematol.2009.012971] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 11/09/2022] Open
Affiliation(s)
- Claude Préhu
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Biochimie et de Génétique, 94000 Créteil
- INSERM U 955, IMRB, Département de Génétique Moléculaire, Equipe 11, 94000 Créteil
| | - Kamran Moradkhani
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Biochimie et de Génétique, 94000 Créteil
- INSERM U 955, IMRB, Département de Génétique Moléculaire, Equipe 11, 94000 Créteil
| | - Jean Riou
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Biochimie et de Génétique, 94000 Créteil
| | - Michel Bahuau
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Biochimie et de Génétique, 94000 Créteil
| | - Pierre Launay
- INSERM U 955, IMRB, Département de Génétique Moléculaire, Equipe 11, 94000 Créteil
| | - Natacha Martin
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Biochimie et de Génétique, 94000 Créteil
| | - Henri Wajcman
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Biochimie et de Génétique, 94000 Créteil
- INSERM U 955, IMRB, Département de Génétique Moléculaire, Equipe 11, 94000 Créteil
| | - Michel Goossens
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Service de Biochimie et de Génétique, 94000 Créteil
- INSERM U 955, IMRB, Département de Génétique Moléculaire, Equipe 11, 94000 Créteil
| | - Frédéric Galactéros
- AP-HP, Groupe Hospitalier Henri Mondor-Albert Chenevier, Unité des Maladies Génétiques du Globule Rouge, 94000 Créteil, France
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21
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Moradkhani K, Bahuau M, Préhu C, Martin N, Bimet C, Galactéros F, Wajcman H. A rare G6PD variant (c.383T > G; p.128Leu > Arg) with a molecular pathophysiological mechanism similar to that of G6PD A− (68Val > Met, 126Asn > Asp). Blood Cells Mol Dis 2009; 43:226-9. [DOI: 10.1016/j.bcmd.2009.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Accepted: 05/15/2009] [Indexed: 10/20/2022]
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22
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Moradkhani K, Mazurier E, Giordano PC, Wajcman H, Préhu C. An α0-Thalassemia-Like Mutation: Hb Suan-Dok [α109(G16)Leu→Arg] Carried by a Recombinant −α3.7Gene. Hemoglobin 2009; 32:419-24. [DOI: 10.1080/03630260802173619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Moradkhani K, Préhu C, Old J, Henderson S, Balamitsa V, Luo HY, Poon MC, Chui DHK, Wajcman H, Patrinos GP. Mutations in the paralogous human alpha-globin genes yielding identical hemoglobin variants. Ann Hematol 2009; 88:535-43. [PMID: 18923834 PMCID: PMC2690850 DOI: 10.1007/s00277-008-0624-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2007] [Accepted: 09/25/2008] [Indexed: 11/25/2022]
Abstract
The human alpha-globin genes are paralogues, sharing a high degree of DNA sequence similarity and producing an identical alpha-globin chain. Over half of the alpha-globin structural variants reported to date are only characterized at the amino acid level. It is likely that a fraction of these variants, with phenotypes differing from one observation to another, may be due to the same mutation but on a different alpha-globin gene. There have been very few previous examples of hemoglobin variants that can be found at both HBA1 and HBA2 genes. Here, we report the results of a systematic multicenter study in a large multiethnic population to identify such variants and to analyze their differences from a functional and evolutionary perspective. We identified 14 different Hb variants resulting from identical mutations on either one of the two human alpha-globin paralogue genes. We also showed that the average percentage of hemoglobin variants due to a HBA2 gene mutation (alpha2) is higher than the percentage of hemoglobin variants due to the same HBA1 gene mutation (alpha1) and that the alpha2/alpha1 ratio varied between variants. These alpha-globin chain variants have most likely occurred via recurrent mutations, gene conversion events, or both. Based on these data, we propose a nomenclature for hemoglobin variants that fall into this category.
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Affiliation(s)
- Kamran Moradkhani
- Biochimie Génétique, AP-HP, Hôpital Henri Mondor, 94010 Créteil, France
- INSERM, U841, 94010 Créteil, France
| | - Claude Préhu
- Biochimie Génétique, AP-HP, Hôpital Henri Mondor, 94010 Créteil, France
- INSERM, U841, 94010 Créteil, France
| | - John Old
- National Haemoglobinopathy Reference Laboratory, Oxford Haemophilia Centre, Churchill Hospital, Oxford, UK
| | - Shirley Henderson
- National Haemoglobinopathy Reference Laboratory, Oxford Haemophilia Centre, Churchill Hospital, Oxford, UK
| | - Vera Balamitsa
- Unit for Prevention of Thalassemia, Trikala General Hospital, Trikala, Greece
| | - Hong-Yuan Luo
- Departments of Medicine, Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA USA
| | - Man-Chiu Poon
- Departments of Medicine and Pediatrics, University of Calgary and Calgary Health Region, Calgary, AB Canada
| | - David H. K. Chui
- Departments of Medicine, Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, MA USA
| | - Henri Wajcman
- Biochimie Génétique, AP-HP, Hôpital Henri Mondor, 94010 Créteil, France
- INSERM, U841, 94010 Créteil, France
| | - George P. Patrinos
- MGC-Department of Cell Biology and Genetics, Erasmus University Medical Center, Faculty of Medicine and Health Sciences, P. O. Box 2040, 3000 CA Rotterdam, the Netherlands
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Bhatt S, Moradkhani K, Mrasek K, Puechberty J, Manvelyan M, Hunstig F, Lefort G, Weise A, Lespinasse J, Sarda P, Liehr T, Hamamah S, Pellestor F. Breakpoint mapping and complete analysis of meiotic segregation patterns in three men heterozygous for paracentric inversions. Eur J Hum Genet 2009; 17:44-50. [PMID: 18685557 PMCID: PMC2985954 DOI: 10.1038/ejhg.2008.144] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Revised: 06/23/2008] [Accepted: 07/02/2008] [Indexed: 01/30/2023] Open
Abstract
Paracentric inversions (PAIs) are structural chromosomal rearrangements generally considered to be harmless. To date, only a few studies have been performed concerning the meiotic segregation of these rearrangements, using either the human-hamster fertilization system or fluorescence in situ hybridization (FISH) with centromeric or telomeric DNA probes. To improve the assessment of imbalances in PAI, we present a new strategy based on FISH assay using multiple bacterial artificial chromosome probes, which allow a precise localization of chromosome break points and the identification of all meiotic products in human sperm. Sperm samples of three cases with PAI were investigated: an inv(5)(q13.2q33.1), an inv(9)(q21.2q34.13) and an inv(14)(q23.2q32.13). The frequencies of spermatozoa with inverted chromosomes were 44.7% in inv(5), 42.7% in inv(9) and 46.7% in inv(14). The global incidences of unbalanced complements were 9.7, 12.6 and 3.7% in inv(5), inv(9) and inv(14), respectively. This report is the first study providing a detailed description of meiotic segregation patterns in human sperm by using a sperm FISH approach. This study demonstrates that the detailed analysis of segregation in PAI may provide important data for both genetic analysis and counseling of inversion carriers.
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Affiliation(s)
- Samarth Bhatt
- CHU Montpellier, Institute for Research in Biotherapy, Hôpital Saint-Eloi, Montpellier, France
- INSERM U847, Montpellier, France
| | - Kamran Moradkhani
- CHU Montpellier, Service de Génétique Médicale, Hôpital Arnaud de Villeuneuve, Montpellier, France
| | - Kristin Mrasek
- Institute of Human Genetics and Anthropology, Jena, Germany
| | - Jacques Puechberty
- CHU Montpellier, Service de Génétique Médicale, Hôpital Arnaud de Villeuneuve, Montpellier, France
| | - Marina Manvelyan
- Institute of Human Genetics and Anthropology, Jena, Germany
- Department of Genetics and Laboratory of Cytogenetics, State University, Yerevan, Armenia
| | | | - Genevieve Lefort
- CHU Montpellier, Service de Génétique Médicale, Hôpital Arnaud de Villeuneuve, Montpellier, France
| | - Anja Weise
- Institute of Human Genetics and Anthropology, Jena, Germany
| | | | - Pierre Sarda
- CHU Montpellier, Service de Génétique Médicale, Hôpital Arnaud de Villeuneuve, Montpellier, France
| | - Thomas Liehr
- CHU Montpellier, Service de Génétique Médicale, Hôpital Arnaud de Villeuneuve, Montpellier, France
| | - Samir Hamamah
- CHU Montpellier, Institute for Research in Biotherapy, Hôpital Saint-Eloi, Montpellier, France
- INSERM U847, Montpellier, France
- Université Montpellier I, UFR de Médecine, Montpellier, France
- CHU Montpellier, Unité Biologie Clinique d'AMP/DPI, Hôpital Arnaud de Villeuneuve, Montpellier, France
| | - Franck Pellestor
- CHU Montpellier, Institute for Research in Biotherapy, Hôpital Saint-Eloi, Montpellier, France
- INSERM U847, Montpellier, France
- Université Montpellier I, UFR de Médecine, Montpellier, France
- CHU Montpellier, Unité Biologie Clinique d'AMP/DPI, Hôpital Arnaud de Villeuneuve, Montpellier, France
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25
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Moradkhani K, Riou J, Francina A, Wajcman H, Prehu C. Hb Gerland [alpha 55(E4)Val-->Ala]: a mutation found on the alpha1-globin gene. Hemoglobin 2008; 32:478-84. [PMID: 18932073 DOI: 10.1080/03630260802341638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The Hb Gerland [alpha 55(E4)Val-->Ala] mutation has been described in the alpha2-globin gene. We report here the same mutation in the paralogous alpha1-globin gene. This variant was found in a healthy 18-month-old boy of Chinese origin. Abnormal hemoglobin (Hb) fractions were visible on isoelectric focusing (IEF) and cation exchange high performance liquid chromatography (HPLC), with elution patterns differing from one system to another. Direct sequencing of the alpha-globin genes revealed a GTT>GCT (Val-->Ala) transversion at codon 55 of the alpha1-globin gene. We propose to name the variant encoded by the alpha1-globin gene Hb Gerland [A1], and the variant that is encoded by the alpha2-globin gene Hb Gerland [A2].
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26
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Bhatt S, Moradkhani K, Mrasek K, Puechberty J, Lefort G, Lespinasse J, Sarda P, Liehr T, Hamamah S, Pellestor F. Breakpoint characterization: a new approach for segregation analysis of paracentric inversion in human sperm. Mol Hum Reprod 2007; 13:751-6. [PMID: 17913851 DOI: 10.1093/molehr/gam048] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 11/15/2022] Open
Abstract
Paracentric inversions (PAI) are structural chromosomal rearrangements generally considered to be harmless. Nevertheless, cases of viable recombinants have been reported, indicating the interest of studying the meiotic behaviour of these chromosomal abnormalities. To date, the few studies reported have been performed using either the human-hamster fertilization system or fluorescence in situ hybridization with centromeric or telomeric DNA probes. In order to improve the assessment of meiotic segregation in PAI, we present a new strategy based on the use of bacterial artificial chromosome (BAC) probes which allow a precise localization of chromosome breakpoints and the identification of all meiotic products in human sperm. Sperm samples from carriers of an inv(5) and an inv(14) were used to test this new high-resolution procedure.
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Affiliation(s)
- S Bhatt
- INSERM U847, Montpellier, France
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27
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Moradkhani K, Henthorn J, Riou J, Phelan L, Préhu C, Wajcman H. Hb Niigata [β1(Na1)Val→Leu] in a Romanian Individual Resulting from Another Nucleotide Substitution than that Found in the Japanese. Hemoglobin 2007; 31:477-82. [DOI: 10.1080/03630260701587885] [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: 10/22/2022]
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28
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Reboul MP, Tandonnet O, Biteau N, Belet-de Putter C, Rebouissoux L, Moradkhani K, Vu PY, Saura R, Arveiler B, Lacombe D, Taine L, Iron A. Mosaic maternal uniparental isodisomy for chromosome 7q21-qter. Clin Genet 2006; 70:207-13. [PMID: 16922723 DOI: 10.1111/j.1399-0004.2006.00664.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [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: 11/28/2022]
Abstract
Uniparental disomy (UPD) for several human chromosomes is associated with clinical abnormalities. We report the case of a 2-year-old boy with severe intrauterine and post-natal growth retardation (IUGR/PNGR) and highly variable sweat chloride concentrations. The patient was identified as heterozygous for the F508del mutation of the CFTR (cystic fibrosis transmembrane conductance regulator) gene. Unexpectedly, the signal corresponding to the maternally inherited F508del allele appeared much more intense than the paternally derived wild allele. Molecular analysis including polymorphic marker studies, microsatellites and single-nucleotide polymorphisms subsequently showed that the boy was a carrier of a de novo mosaic maternal isodisomy of a chromosome 7 segment while there was a biparental inheritance of the rest of the chromosome. This is the first report of a mosaic partial UPD7. The matUPD7 segment at 7q21-qter extends for 72.7 Mb. The karyotype (550 bands) of our patient was normal, and fluorescence in situ hybridization with probes mapping around the CFTR gene allowed us to rule out a partial duplication. The detection of this chromosomal rearrangement confirms the hypothesis that the 7q31-qter segment is a candidate for the localization of human imprinted genes involved in the control of IUGR and PNGR. It also emphasizes the importance of searching for UPD7 in severe, isolated and unexplained IUGR and PNGR.
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Affiliation(s)
- M-P Reboul
- Service de Génétique Médicale, Hopital Pellegrin, Laboratoire de Génétique Humaine, Développement et Cancer, Université Victor Segalen Bordeaux 2, France.
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Moradkhani K, Puechberty J, Lefort G, Sarda P, Hamamah S, Pellestor F. P-975. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.1372] [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: 11/15/2022]
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Moradkhani K, Puechberty J, Bhatt S, Lespinasse J, Vago P, Lefort G, Sarda P, Hamamah S, Pellestor F. Rare Robertsonian translocations and meiotic behaviour: sperm FISH analysis of t(13;15) and t(14;15) translocations: a case report. Hum Reprod 2006; 21:3193-8. [PMID: 16917122 DOI: 10.1093/humrep/del314] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [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: 11/13/2022] Open
Abstract
t(13;15) and t(14;15) are two rare Robertsonian translocations. Meiotic segregation was studied in four males heterozygous for the rare Robertsonian translocations t(13;15) and t(14;15). Both locus-specific probes (LSPs) and whole chromosome painting (WCP) probes, specific to chromosomes 13, 14 and 15, were used in this study. The number of spermatozoa scored for each carrier ranged from 891 to 5000. The frequencies of normal and balanced sperm resulting from the alternate mode of segregation ranged from 77.6 to 92.8%, confirming the prevalence of alternate segregation over other segregation modes in all Robertsonian translocations. The incidences of unbalanced complements ranged from 6.7 to 20.4%, with a significant excess of disomy rates over the complementary frequencies of nullisomy. This variability might reflect differences in the location of breakpoints in translocated chromosomes, leading to the variable production of unbalanced gametes and the variable alterations of semen parameters in Robertsonian translocation carriers.
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Affiliation(s)
- K Moradkhani
- Institute of Human Genetics, CNRS, Montpellier, France
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Moradkhani K, Puechberty J, Bhatt S, Vago P, Janny L, Lefort G, Hamamah S, Sarda P, Pellestor F. Meiotic segregation of rare Robertsonian translocations: sperm analysis of three t(14q;22q) cases. Hum Reprod 2006; 21:1166-71. [PMID: 16439506 DOI: 10.1093/humrep/dei477] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [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: 11/12/2022] Open
Abstract
BACKGROUND The t(14;22) remains one of the rare Robertsonian translocations observed in human, with an occurrence estimated at 1.2%. Three cases of rare Robertsonian translocation t(14;22) were investigated for meiotic segregation in sperm samples from male carriers using the fluorescent in situ hybridization (FISH) procedure. The three carriers included two men with an abnormal semen analysis and one with normal semen parameters. METHODS Both locus-specific probes and whole-chromosome painting probes, specific for chromosomes 14 and 22, were used in this study. The number of spermatozoa scored for each probe set ranged from 3279 to 10,024. RESULTS In the three carriers, similar frequencies, ranging from 78.53 to 81.76%, were found for normal and balanced spermatozoa resulting from alternate segregation. The total proportion of unbalanced spermatozoa resulting from adjacent modes of segregation ranged from 17.59 to 20.94%. CONCLUSION This finding confirmed the predominance of alternate segregation over other segregation types in all Robertsonian translocations and indicates a higher production of imbalances in the t(14;22) than in most of the Robertsonian translocations previously analysed. This could be related to the variable location of breakpoints in Robertsonian translocations. This breakpoint diversity could also play a role in the differences in reproductive status observed in male carriers of Robertsonian translocations.
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Affiliation(s)
- K Moradkhani
- Institute of Human Genetics, CNRS, CHU Montpellier, France
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Moradkhani K, Puechberty J, Blanchet P, Coubes C, Lallaoui H, Lewin P, Lefort G, Sarda P. Mosaic trisomy 16 in a fetus: the complex relationship between phenotype and genetic mechanisms. Prenat Diagn 2006; 26:1179-82. [PMID: 17075795 DOI: 10.1002/pd.1585] [Citation(s) in RCA: 12] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVES This study was undertaken to discuss the workup of trisomy 16 pregnancies. STUDY DESIGN This case study reports the prenatal detection and postnatal confirmation of mosaic trisomy 16, associated with uniparental disomy (UPD) 16, in a 34-year-old woman who showed elevated maternal serum alpha-fetoprotein and beta-HCG at a gestational age (GA) of 15.5 weeks. RESULTS Amniotic fluid (AF) karyotyping at different GAs revealed various levels of trisomy 16 mosaicism (0 to level III). UPD studies at 21 weeks of gestation revealed maternal heterodisomy 16. Serial fetal ultrasonography showed fetal abnormalities: intrauterine growth restriction (IUGR), dilated digestive tract, and gallbladder agenesis. Postmortem examination confirmed the prenatal findings and revealed additional anomalies, such as hypoplastic cerebellum with abnormal gyration of the vermis. CONCLUSIONS Workup following prenatal detection of trisomy 16 mosaicism in chorionic villi must include AF karyotyping and serial ultrasound examination of the fetus in order to approach postnatal developmental prognosis.
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Taine L, Rocca-Serra P, El Moneim AA, Verdier N, Moradkhani K, Saura R, Gorry P, Longy M, Bonnet F. The common fragile site FRA16C does not map within the 16q smallest region of overlap number 2 frequently lost in breast carcinoma. Cancer Genet Cytogenet 2003; 144:85-6. [PMID: 12810264 DOI: 10.1016/s0165-4608(02)00865-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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