Cited by 1,203Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersGenomics and Rare Diseases

Exome sequencing in sporadic autism spectrum disorders identifies severe de novo mutations

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O'Roak, Brian J, Deriziotis, Pelagia, Lee, Choli, Vives, Laura, Schwartz, Jerrod J, Girirajan, Santhosh, Karakoc, Emre, MacKenzie, Alexandra P +8 more·2011·Nature Genetics

Abstract

Evidence for the etiology of autism spectrum disorders (ASDs) has consistently pointed to a strong genetic component complicated by substantial locus heterogeneity. We sequenced the exomes of 20 individuals with sporadic ASD (cases) and their parents, reasoning that these families would be enriched for de novo mutations of major effect. We identified 21 de novo mutations, 11 of which were protein altering. Protein-altering mutations were significantly enriched for changes at highly conserved residues. We identified potentially causative de novo events in 4 out of 20 probands, particularly among more severely affected individuals, in FOXP1, GRIN2B, SCN1A and LAMC3. In the FOXP1 mutation carrier, we also observed a rare inherited CNTNAP2 missense variant, and we provide functional support for a multi-hit model for disease risk. Our results show that trio-based exome sequencing is a powerful approach for identifying new candidate genes for ASDs and suggest that de novo mutations may contribute substantially to the genetic etiology of ASDs.

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  • ASD is polygenic, with recent studies of de novo exonic mutations suggesting involvement of as many as 400 to 1,000 genetic loci.

    “ASD is polygenic in aetiology; recent studies of de novo exonic mutations suggest the involvement of as many as 400 to 1,000 genetic loci in ASD9.”
  • De novo mutations arising in the germline are a significant cause of ASD.

    “Recent evidence suggests that de novo mutations that arise in the germline are a significant cause of ASD, although it is important to keep in mind that the genetic aetiology of about 70% of the forms of ASD is unknown and it remains perplexing why ASD is at least four times more prevalent in males than in females.”
  • ASD is often caused by newly arising CNVs or rare germline mutations, particularly in sperm of older fathers.

    “ASD is often due to newly arising gene copy number variants (CNVs) — such as a deletion or duplication of a region of a chromosome — or a rare mutation that arises in the germ cell, particularly in sperm of older fathers5–10.”
  • Exome sequencing of parent-offspring trios has identified de novo exonic mutations in SCN2A, KATNAL2, CHD8, FOXP1, NTNG1, GRIN2B, and LAMC3, extending the number of genes for which mutation may contribute to ASD.

    “In addition, very recent exome sequencing of parent-offspring trios has identified de novo exonic mutations in SCN2A, KATNAL2, CHD8, FOXP1, NTNG1, GRIN2B, LAMC3(refs 7–9), extending further the number of genes for which mutation may contribute to ASD.”
  • Those studies show that new sequencing technologies can greatly advance knowledge of the genetic basis of ASD.

    “These studies demonstrate the ability of new sequencing technologies to significantly advance our understanding of the genetic basis of ASD.”

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Authors
O'Roak, B. J., Deriziotis, P., Lee, C., Vives, L., Schwartz, J. J., Girirajan, S., Karakoc, E., MacKenzie, A. P., Ng, S. B., Baker, C., Rieder, M. J., Nickerson, D. A., Bernier, R., Fisher, S. E., Shendure, J., & Eichler, E. E.
Affiliations
  • Centre for Human Genetics (GB)
  • University of Washington (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Shendure, Jay
  • Eichler, Evan E
Venue
Nature Genetics
Published
2011-05-15
Volume
43
Issue
6
Pages
585-589
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2127634492
Cited by
1,203
References
53
Citations by year
2026: 14 · 2025: 30 · 2024: 35 · 2023: 24 · 2022: 39 · 2021: 54 · 2020: 53 · 2019: 66 · 2018: 79 · 2017: 93 · 2016: 89 · 2015: 101 · 2014: 138 · 2013: 153 · 2012: 153
FWCI
84.23
Type
journal article
Language
en
Update notices
erratum (2012-03-28)
Open access
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Max Planck Digital Library (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • Wellcome Trust (075491/Z/04/Z, 075491/Z/04,)
  • U.S. Public Health Service (273200800010C)
  • National Heart, Lung, and Blood Institute (HL-102924, RC2HL102926, UC2HL102924, HL 1029230, R01HL094976, HL094976, RC2HL102924, UC2HL102926, HL-102926)
  • National Human Genome Research Institute (RC2HG005608, HG 005608)
  • National Institute of Environmental Health Sciences (HHSN273200800010C)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD065285, R01HD065285)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
Keywords
autism spectrum disorder, de novo mutations, exome sequencing, FOXP1, NR2B subunit, SCN1A, LAMC3, CNTNAP2, multi-hit model, disease risk, genetic etiology, conserved residues, frameshift mutation, splice site mutation, missense mutations
MeSH terms
Adult, Child, Child Development Disorders, Pervasive, Exons, Female, Humans, Male, Middle Aged, Mutation, Pedigree, Sequence Analysis, DNA, Genetic Predisposition to Disease

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