Cited by 286Genetics and Neurodevelopmental DisordersAutism Spectrum Disorder ResearchGenomic variations and chromosomal abnormalities

Truncating mutations in NRXN2 and NRXN1 in autism spectrum disorders and schizophrenia

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Gauthier, Julie, Siddiqui, Tabrez J., Huashan, Peng, Yokomaku, Daisaku, Hamdan, Fadi F., Champagne, Nathalie, Lapointe, Mathieu, Spiegelman, Dan +13 more·2011·Human Genetics

Abstract

Growing genetic evidence is converging in favor of common pathogenic mechanisms for autism spectrum disorders (ASD), intellectual disability (ID or mental retardation) and schizophrenia (SCZ), three neurodevelopmental disorders affecting cognition and behavior. Copy number variations and deleterious mutations in synaptic organizing proteins including NRXN1 have been associated with these neurodevelopmental disorders, but no such associations have been reported for NRXN2 or NRXN3. From resequencing the three neurexin genes in individuals affected by ASD (n = 142), SCZ (n = 143) or non-syndromic ID (n = 94), we identified a truncating mutation in NRXN2 in a patient with ASD inherited from a father with severe language delay and family history of SCZ. We also identified a de novo truncating mutation in NRXN1 in a patient with SCZ, and other potential pathogenic ASD mutations. These truncating mutations result in proteins that fail to promote synaptic differentiation in neuron coculture and fail to bind either of the established postsynaptic binding partners LRRTM2 or NLGN2 in cell binding assays. Our findings link NRXN2 disruption to the pathogenesis of ASD for the first time and further strengthen the involvement of NRXN1 in SCZ, supporting the notion of a common genetic mechanism in these disorders.

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Authors
Gauthier, J., Siddiqui, T. J., Huashan, P., Yokomaku, D., Hamdan, F. F., Champagne, N., Lapointe, M., Spiegelman, D., Noreau, A., Lafrenière, R. G., Fathalli, F., Joober, R., Krebs, M.-O., DeLisi, L. E., Mottron, L., Fombonne, É., Michaud, J. L., Drapeau, P., Carbonetto, S., Craig, A. M., & Rouleau, G. A.
Affiliations
  • Centre Hospitalier de l’Université de Montréal (CA)
  • University of British Columbia (CA)
  • CHU Sainte-Justine Research Center (CA)
  • Université de Montréal (CA)
  • Douglas Mental Health University Institute (CA)
  • Centre Hospitalier Sainte-Anne (FR)
  • Harvard University (US)
  • Hôpital Rivière-des-Prairies (CA)
  • Montreal General Hospital (CA)
Corresponding author
  • Craig, Ann Marie
  • Rouleau, Guy A.
Venue
Human Genetics
Published
2011-03-22
Volume
130
Issue
4
Pages
563-573
ISSN
  • 0018-7348 (ISSN-L)
  • 0340-6717
  • 1432-1203
OpenAlex
W2037116272
Cited by
286
References
44
Citations by year
2026: 10 · 2025: 18 · 2024: 17 · 2023: 8 · 2022: 17 · 2021: 15 · 2020: 14 · 2019: 15 · 2018: 15 · 2017: 25 · 2016: 27 · 2015: 19 · 2014: 17 · 2013: 33 · 2012: 24
FWCI
16.92
Type
journal article
Language
en
Open access
Locations
  • Human Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Genome Canada
  • Génome Québec
  • Université de Montréal
  • Canadian Institutes of Health Research (MOP84241)
  • National Institute of Mental Health (MH70860, R01MH070860)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
Keywords
NRXN1, neurexin, autism spectrum disorder, schizophrenia, intellectual disability, truncating mutations, de novo mutations, synaptic differentiation, synaptic proteins, neurodevelopmental disorders, genetic pathogenesis
MeSH terms
Amino Acid Sequence, Animals, Calcium-Binding Proteins, Cells, Cultured, Chlorocebus aethiops, Child, Child Development Disorders, Pervasive, Female, Humans, Language Development Disorders, Male, Membrane Proteins, Molecular Sequence Data, Mutation, Nerve Tissue Proteins, Neurons, Pedigree, Schizophrenia, Cohort Studies, Cell Adhesion Molecules, Neuronal, Case-Control Studies, Sequence Homology, Amino Acid, Gene Dosage, Neural Cell Adhesion Molecules, COS Cells, Genetic Predisposition to Disease, Mice

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