3q29 duplications: A cohort of 46 patients and a literature review.

3q29 duplication chromosomal microarray analysis copy number variation genomic disorder multiple molecular diagnoses neurodevelopmental disorders

Journal

American journal of medical genetics. Part A
ISSN: 1552-4833
Titre abrégé: Am J Med Genet A
Pays: United States
ID NLM: 101235741

Informations de publication

Date de publication:
29 Feb 2024
Historique:
revised: 15 12 2023
received: 20 09 2023
accepted: 22 12 2023
medline: 29 2 2024
pubmed: 29 2 2024
entrez: 29 2 2024
Statut: aheadofprint

Résumé

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.

Identifiants

pubmed: 38421086
doi: 10.1002/ajmg.a.63531
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

e63531

Informations de copyright

© 2024 Wiley Periodicals LLC.

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Auteurs

Marie Massier (M)

Department of Genetics, Reims University Hospital, Reims, France.

Martine Doco-Fenzy (M)

Department of Genetics, Reims University Hospital, Reims, France.
Department of Genetics, Nantes University Hospital, Nantes, France.

Matthieu Egloff (M)

Department of Genetics, Poitiers University Hospital, Poitiers, France.
University of Poitiers, INSERM, LNEC, Department of Genetics, Poitiers University Hospital, Poitiers, France.

Xavier Le Guillou (X)

Department of Genetics, Poitiers University Hospital, Poitiers, France.
University of Poitiers, CNRS, LMA, Department of Genetics, Poitiers University Hospital, Poitiers, France.

Gwenaël Le Guyader (G)

Department of Genetics, Poitiers University Hospital, Poitiers, France.

Sylvia Redon (S)

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 (C)

University of Brest, Inserm, EFS, UMR 1078, GGB, Brest, France.

Karine Le Millier (K)

Department of Genetics, Brest University Hospital, Brest, France.

Kevin Uguen (K)

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 (J)

Intellectual Disability Reference Center, Department of Pediatrics, Brest University Hospital, Brest, France.

Elise Sacaze (E)

Intellectual Disability Reference Center, Department of Pediatrics, Brest University Hospital, Brest, France.

Séverine Audebert-Bellanger (S)

Department of Genetics, Brest University Hospital, Brest, France.
Intellectual Disability Reference Center, Department of Pediatrics, Brest University Hospital, Brest, France.

Andreea Apetrei (A)

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 (A)

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 (N)

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 (A)

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.

Marta Spodenkiewicz (M)

Department of Genetics, Le Reunion University Hospital, St-Pierre, France.

Clémence Jacquin (C)

Department of Genetics, Reims University Hospital, Reims, France.

Gauthier Loron (G)

Department of Neonatal Medicine and Pediatric Intensive Care, University of Reims Champagne-Ardenne, CReSTIC, Reims University Hospital, Reims, France.

Marie Thibaud (M)

Department of Pediatrics, American Memorial Hospital, Reims, France.

Geoffroy Delplancq (G)

Constitutional Genetics Unit, Versailles Hospital, Le Chesnay, France.

Sophie Brisset (S)

Constitutional Genetics Unit, Versailles Hospital, Le Chesnay, France.

Marion Lesieur-Sebellin (M)

Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France.

Valérie Malan (V)

Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France.

Serge Romana (S)

Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France.

Marlène Rio (M)

Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France.

Sandrine Marlin (S)

Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France.

Jeanne Amiel (J)

Department of Genomic Medicine of Rare Disorders, Necker Hospital, APHP Center, University Paris Cité, Paris, France.

Valentine Marquet (V)

Department of Cytogenetics, Clinical Genetics and Reproductive Biology, Limoges University Hospital, Limoges, France.

Benjamin Dauriat (B)

Department of Cytogenetics, Clinical Genetics and Reproductive Biology, Limoges University Hospital, Limoges, France.

Kamran Moradkhani (K)

Department of Genetics, Nantes University Hospital, Nantes, France.

Sandra Mercier (S)

Department of Genetics, Nantes University Hospital, Nantes, France.

Bertrand Isidor (B)

Department of Genetics, Nantes University Hospital, Nantes, France.

Stéphanie Arpin (S)

Department of Genetics, Tours University Hospital, UMR 1253, iBrain, University of Tours, Inserm, Tours, France.

Mathilde Pujalte (M)

Department of Genetics, Hospices Civils de Lyon, Lyon, France.

Guillaume Jedraszak (G)

Constitutional Genetic Laboratory, University Hospital of Amiens & UR4666 HEMATIM, University of Picardie Jules Verne, Amiens, France.

Céline Pebrel-Richard (C)

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 (G)

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 (F)

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 (J)

Medical Genetics Department, Timone Enfants University Hospital, Assistance Publique des Hôpitaux de Marseille, Marseille, France.

Chantal Missirian (C)

Medical Genetics Department, Timone Enfants University Hospital, Assistance Publique des Hôpitaux de Marseille, Marseille, France.

Nora Chelloug (N)

Department of Medical Genetics, Toulouse University Hospital, Toulouse, France.

Annick Toutain (A)

Department of Genetics, Tours University Hospital, UMR 1253, iBrain, University of Tours, Inserm, Tours, France.

Jean Chiesa (J)

Department of Genetics, Nimes, University Hospital, Nimes University Hospital, Nimes, France.

Boris Keren (B)

Department of Genetics, APHP Sorbonne University, Paris, France.

Cyril Mignot (C)

Department of Genetics, APHP Sorbonne University, Paris, France.

Evan Gouy (E)

Department of Genetics, Hospices Civils de Lyon, Lyon, France.

Sylvie Jaillard (S)

Department of Cytogenetics and Cell Biology, Rennes university hospital, Rennes, France.

Emilie Landais (E)

Department of Genetics, Reims University Hospital, Reims, France.

Céline Poirsier (C)

Department of Genetics, Reims University Hospital, Reims, France.

Classifications MeSH