Cited by 2,165Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersGenomics and Rare Diseases

Sporadic autism exomes reveal a highly interconnected protein network of de novo mutations

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O’Roak, Brian J., Vives, Laura, Girirajan, Santhosh, Karakoc, Emre, Krumm, Niklas, Coe, Bradley P., Levy, Roie, Ko, Arthur +15 more·2012·Nature

Abstract

It is well established that autism spectrum disorders (ASD) have a strong genetic component; however, for at least 70% of cases, the underlying genetic cause is unknown. Under the hypothesis that de novo mutations underlie a substantial fraction of the risk for developing ASD in families with no previous history of ASD or related phenotypes--so-called sporadic or simplex families--we sequenced all coding regions of the genome (the exome) for parent-child trios exhibiting sporadic ASD, including 189 new trios and 20 that were previously reported. Additionally, we also sequenced the exomes of 50 unaffected siblings corresponding to these new (n = 31) and previously reported trios (n = 19), for a total of 677 individual exomes from 209 families. Here we show that de novo point mutations are overwhelmingly paternal in origin (4:1 bias) and positively correlated with paternal age, consistent with the modest increased risk for children of older fathers to develop ASD. Moreover, 39% (49 of 126) of the most severe or disruptive de novo mutations map to a highly interconnected β-catenin/chromatin remodelling protein network ranked significantly for autism candidate genes. In proband exomes, recurrent protein-altering mutations were observed in two genes: CHD8 and NTNG1. Mutation screening of six candidate genes in 1,703 ASD probands identified additional de novo, protein-altering mutations in GRIN2B, LAMC3 and SCN1A. Combined with copy number variant (CNV) data, these results indicate extreme locus heterogeneity but also provide a target for future discovery, diagnostics and therapeutics.

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  • Most proteins encoded by ASD risk genes are involved either in synaptic structure and function or chromatin modification and regulation of gene expression.

    “including that, prima facie , most proteins encoded by ASD risk genes are involved either in synaptic structure and function or chromatin modification and regulation of gene expression 38,46,47,58 (Fig. 3).”

    From Autism spectrum disorder (2020) · cites this paper as [38]

    The paper describes ASD-associated mutations in genes involved in synapse formation and in a chromatin-remodeling protein network (Abstract; page not provided). But it reports that 39% of the severe or disruptive de novo mutations studied map to that network; it does not establish that most proteins encoded by ASD risk genes fall into the two categories claimed. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • CNVs and SNPs have both been reported to play a major role in autism incidence.

    “CNVs and SNPs have both been reported to play a major role in autism incidence (36–41).”
  • In 612 Simons Simplex Collection families, analysis of publicly released whole-exome sequence data showed a modest trend toward an excess of biallelic inherited rare protein-altering variants with MAF below 1% in cases (8/612) compared with control siblings (2/419) in at least one screened gene, with p=0.21 by two-tailed Fisher's exact test.

    “An analysis of publicly released whole exome sequence data (Iossifov et al., 2012; O’Roak et al., 2012; Sanders et al., 2012) showed a modest trend towards an excess of biallelic, inherited, rare (MAF<1%), protein-altering variants in cases (8/612 ) compared to control siblings (2/419) (p=0.21, Fisher’s exact test, two-tailed) in at least one of the genes we screened (Table S5).”

    From Using Whole-Exome Sequencing to Identify Inherited Causes of Autism (2013) · cites this paper as O’Roak et al., 2012

  • A common theme for ASD mutations in general may be partial loss of gene function and/or dosage sensitivity.

    “Hypomorphic, biallelic mutations, combined with CNVs and heterozygous stop mutations (Neale et al., 2012; O’Roak et al., 2012; Sanders et al., 2012) which completely inactivate one of two alleles, suggest that a common theme for ASD mutations in general might be partial loss of gene function and/or dosage sensitivity.”

    From Using Whole-Exome Sequencing to Identify Inherited Causes of Autism (2013) · cites this paper as O’Roak et al., 2012

  • Collectively, these papers show that rare SNVs play a significant role in ASD genetic liability.

    “Together, results from these papers demonstrate a significant role for rare SNVs in genetic liability for ASD”

    From Sex differences in autism spectrum disorders (2013) · cites this paper as [49]

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Authors
O’Roak, B. J., Vives, L., Girirajan, S., Karakoc, E., Krumm, N., Coe, B. P., Levy, R., Ko, A., Lee, C., Smith, J. D., Turner, E. H., Stanaway, I. B., Vernot, B., Malig, M., Baker, C., Reilly, B., Akey, J. M., Borenstein, E., Rieder, M. J., Nickerson, D. A., Bernier, R., Shendure, J., & Eichler, E. E.
Affiliations
  • University of Washington (US)
  • Santa Fe Institute (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Shendure, Jay
  • Eichler, Evan E.
Venue
Nature
Published
2012-04-04
Volume
485
Issue
7397
Pages
246-250
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1964444099
Cited by
2,165
References
50
Citations by year
2026: 42 · 2025: 68 · 2024: 85 · 2023: 101 · 2022: 104 · 2021: 137 · 2020: 151 · 2019: 147 · 2018: 143 · 2017: 173 · 2016: 198 · 2015: 219 · 2014: 262 · 2013: 212 · 2012: 118
FWCI
131.12
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • Simons Foundation
  • University of Washington
  • Simons Foundation Autism Research Initiative (137578)
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute (HL-102924, RC2HL102926, RC2HL102923, UC2HL102924, HL 1029230, R01HL094976, HL094976, RC2HL102924, UC2HL102926, HL-102926)
  • National Human Genome Research Institute
  • 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
de novo mutations, paternal age, protein-protein interaction network, β-catenin signaling, chromatin remodeling, CHD8, SCN2A, NTNG1, locus heterogeneity, simplex families, autism risk genes, parent-child trios, unaffected siblings, recurrent mutations, p53 pathway, copy number variation
MeSH terms
Netrins, Autistic Disorder, DNA-Binding Proteins, Exons, Humans, Laminin, Nerve Tissue Proteins, Parents, Stochastic Processes, Transcription Factors, Reproducibility of Results, Sodium Channels, Signal Transduction, Tumor Suppressor Protein p53, Receptors, N-Methyl-D-Aspartate, Point Mutation, Genetic Predisposition to Disease, Siblings, beta Catenin, GPI-Linked Proteins, Exome, Protein Interaction Maps, NAV1.1 Voltage-Gated Sodium Channel

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