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De Novo Mutations in Protein Kinase Genes CAMK2A and CAMK2B Cause Intellectual Disability

  • Undiagnosed Diseases Network
  • , GEM HUGO
  • , Deciphering Developmental Disorders Study
  • Service de Génétique Médicale
  • Erasmus University Rotterdam
  • Boston Children's Hospital
  • OPKO Health, Inc.
  • Telemark Hospital Trust
  • University of California at San Francisco
  • University of Washington
  • Creighton University
  • Bellvitge Biomedical Research Institute
  • Center for Biomedical Research on Rare Diseases
  • ICREA
  • University of Amsterdam
  • Baylor College of Medicine
  • Stanford University
  • Université d'Angers
  • Institut national de la santé et de la recherche médicale
  • Hospices civils de Lyon
  • Centre de Recherche en Neurosciences de Lyon
  • University of Arkansas for Medical Sciences
  • University of Dundee
  • CHU de Rennes
  • Radboud University Nijmegen
  • The Children's Hospital of Philadelphia
  • University of Illinois Chicago
  • Sheffield Children's NHS Foundation Trust
  • Belfast Health and Social Care Trust
  • City Hospital
  • Utrecht University
  • Washington University St. Louis
  • Leiden University
  • Children's Hospital and Regional Medical Center Seattle
  • University of Pennsylvania
  • Ambry Genetics
  • Heidelberg University 
  • German Cancer Research Center
  • Nantes Université
  • L'institut du Thorax
  • Baylor Genetics, LLC
  • Hôpital civil
  • Université de Strasbourg
  • Hôpital de Hautepierre
  • CHU de Brest
  • CHU de Poitiers
  • Université de Poitiers
  • Centre Hospitalier Régional Universitaire de Tours
  • Seattle Children's Hospital
  • Howard Hughes Medical Institute
  • Université Rennes1
  • University of Melbourne

Research output: Contribution to journalArticlepeer-review

Abstract

Calcium/calmodulin-dependent protein kinase II (CAMK2) is one of the first proteins shown to be essential for normal learning and synaptic plasticity in mice, but its requirement for human brain development has not yet been established. Through a multi-center collaborative study based on a whole-exome sequencing approach, we identified 19 exceedingly rare de novo CAMK2A or CAMK2B variants in 24 unrelated individuals with intellectual disability. Variants were assessed for their effect on CAMK2 function and on neuronal migration. For both CAMK2A and CAMK2B, we identified mutations that decreased or increased CAMK2 auto-phosphorylation at Thr286/Thr287. We further found that all mutations affecting auto-phosphorylation also affected neuronal migration, highlighting the importance of tightly regulated CAMK2 auto-phosphorylation in neuronal function and neurodevelopment. Our data establish the importance of CAMK2A and CAMK2B and their auto-phosphorylation in human brain function and expand the phenotypic spectrum of the disorders caused by variants in key players of the glutamatergic signaling pathway.

Original languageEnglish
Pages (from-to)768-788
Number of pages21
JournalAmerican Journal of Human Genetics
Volume101
Issue number5
DOIs
Publication statusPublished - 2 Nov 2017

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • AMPAR
  • CAMK2
  • CAMK2A
  • CAMK2B
  • NMDAR
  • de novo mutations
  • intellectual disability
  • synaptic plasticity

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