Cited by 2,585Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersGenomics and Rare Diseases

The contribution of de novo coding mutations to autism spectrum disorder

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Iossifov, Ivan, O’Roak, Brian J., Sanders, Stephan J., Ronemus, Michael, Krumm, Niklas, Levy, Dan, Stessman, Holly A., Witherspoon, Kali T. +39 more·2014·Nature

Abstract

Whole exome sequencing has proven to be a powerful tool for understanding the genetic architecture of human disease. Here we apply it to more than 2,500 simplex families, each having a child with an autistic spectrum disorder. By comparing affected to unaffected siblings, we show that 13% of de novo missense mutations and 43% of de novo likely gene-disrupting (LGD) mutations contribute to 12% and 9% of diagnoses, respectively. Including copy number variants, coding de novo mutations contribute to about 30% of all simplex and 45% of female diagnoses. Almost all LGD mutations occur opposite wild-type alleles. LGD targets in affected females significantly overlap the targets in males of lower intelligence quotient (IQ), but neither overlaps significantly with targets in males of higher IQ. We estimate that LGD mutation in about 400 genes can contribute to the joint class of affected females and males of lower IQ, with an overlapping and similar number of genes vulnerable to contributory missense mutation. LGD targets in the joint class overlap with published targets for intellectual disability and schizophrenia, and are enriched for chromatin modifiers, FMRP-associated genes and embryonically expressed genes. Most of the significance for the latter comes from affected females.

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Crossref · 10.1038/nature13908

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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 [46]

    The Results section (“Functional clustering in target genes”; page unavailable) reports enrichment of FMRP targets and chromatin modifiers among genes with de novo mutations. The Discussion (“Properties of target classes”; page unavailable) identifies synaptic proteins and transcriptional regulators among recurrent targets. Neither passage establishes that most proteins encoded by ASD risk genes fall into the two categories named in the claim. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Rare inherited and de novo variants are major contributors to individual risk for ASD.

    “Rare inherited and de novo variants are major contributors to individual risk for autism spectrum disorder (ASD)”

    From Large-Scale Exome Sequencing Study Implicates Both Developmental and Functional Changes in the Neurobiology of Autism (2020) · cites this paper as Iossifov et al., 2014

    The Abstract reports that de novo coding mutations, including copy-number variants, contribute to about 30% of diagnoses in simplex families. The Introduction says a contribution from transmission has long been suspected, but the paper does not establish that rare inherited variants are major contributors to individual ASD risk. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • De novo mutations, mostly copy number variants and gene disrupting point mutations, have larger individual effects but collectively explain less than 5% of the overall liability and far less of the heritability.

    “By contrast, de novo mutations, mostly copy number variants (CNVs) and gene disrupting point mutations, have larger individual effects, but collectively explain <5% of the overall liability 1-3 and far less of the heritability.”

    From Identification of common genetic risk variants for autism spectrum disorder (2019) · cites this paper as [3]

    The Discussion (Gene vulnerability and molecular mechanisms; page unavailable) says many de novo likely gene-disrupting mutations strongly predispose to ASD, supporting the claim that individual mutations can have substantial effects. The Abstract reports contributions to diagnoses, including copy-number variants, but does not estimate that de novo mutations explain less than 5% of overall liability or far less of heritability. Searches for “liability” and “heritability” found no such estimate in our copy. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • ASD affects 1-1.5% of individuals and is highly heritable, with both common and rare variants contributing to its etiology.

    “ASD affects 1-1.5% of individuals and is highly heritable, with both common and rare variants contributing to its etiology 1-4 .”

    From Identification of common genetic risk variants for autism spectrum disorder (2019) · cites this paper as [3]

    The Introduction (page unavailable) links ASD to increased sibling risk and inherited transmission, while the Results report a contribution from de novo mutations. The Methods give sex-specific prevalence assumptions, not a 1–1.5% estimate for all individuals. The passages do not establish high heritability or a contribution from common variants. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Several microdeletions lead to loss of various lengths of the C-terminal portion of Dock4 protein, which is responsible for its Rac1-activating ability.

    “For instance, several microdeletions lead to loss of various lengths of the C-terminal portion of Dock4 protein 19, 21, 26, which is responsible for its Rac1-activating ability 27.”

    From Autism-like social deficit generated by Dock4 deficiency is rescued by restoration of Rac1 activity and NMDA receptor function. (2021) · cites this paper as [21]

    Citation 26 is attached to the claim about microdeletions removing portions of Dock4’s C-terminus; the Rac1-activating function is separately cited to reference 27. The supplied Results and Discussion passages discuss de novo coding mutations generally, but neither they nor searches for “Dock4” and “DOCK4 microdeletions C-terminal portion” yielded a passage addressing those deletions. (LLM, conf=0.76)

    Experimental — accuracy not yet measured

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Authors
Iossifov, I., O’Roak, B. J., Sanders, S. J., Ronemus, M., Krumm, N., Levy, D., Stessman, H. A., Witherspoon, K. T., Vives, L., Patterson, K. E., Smith, J. D., Paeper, B., Nickerson, D. A., Dea, J., Dong, S., Gonzalez, L. E., Mandell, J. D., Mane, S. M., Murtha, M. T., Sullivan, C. A., Walker, M. F., Waqar, Z., Wei, L., Willsey, A. J., Yamrom, B., Lee, Y.-H., Grabowska, E., Dalkic, E., Wang, Z., Marks, S., Andrews, P., Leotta, A., Kendall, J., Hakker, I., Rosenbaum, J., Ma, B., Rodgers, L., Troge, J., Narzisi, G., Yoon, S., Schatz, M. C., Ye, K., McCombie, W. R., Shendure, J., Eichler, E. E., State, M. W., & Wigler, M.
Affiliations
  • Cold Spring Harbor Laboratory (US)
  • Oregon Health & Science University (US)
  • University of California, San Francisco (US)
  • University of Washington (US)
  • Peking University (CN)
  • Yale University (US)
  • Albert Einstein College of Medicine (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
  • Shendure, Jay
  • Eichler, Evan E.
  • State, Matthew W.
  • Wigler, Michael
Venue
Nature
Published
2014-10-29
Volume
515
Issue
7526
Pages
216-221
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2008627757
Cited by
2,585
References
51
Citations by year
2026: 125 · 2025: 178 · 2024: 204 · 2023: 209 · 2022: 263 · 2021: 266 · 2020: 298 · 2019: 232 · 2018: 202 · 2017: 237 · 2016: 210 · 2015: 146 · 2014: 12
FWCI
112.46
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Cold Spring Harbor Laboratory Institutional Repository (Cold Spring Harbor Laboratory) (acceptedVersion)
  • Zonguldak Bülent Ecevit University Institutional Repository (submittedVersion, cc-by-nc-nd)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health (1rc2hl103010-01, UL1TR000142)
  • Canadian Institutes of Health Research
  • National Heart, Lung, and Blood Institute (RC2HL102925, RC2HL102926, RC2HL102923, UC2HL102924, RC2HL-103010, UC2HL102925, UC2HL102923, UC2HL103010, RC2HL102924, UC2HL102926)
  • National Institute of Mental Health (R01MH101221)
  • National Institute of General Medical Sciences (T32GM007266)
  • National Center for Advancing Translational Sciences
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (U54HD083091)
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, simplex families, missense mutations, copy number variation, sex differences, intellectual disability, schizophrenia, chromatin modifiers, exome sequencing, genetic architecture, affected siblings, synaptic genes, chromatin remodeling
MeSH terms
Child, Child Development Disorders, Pervasive, Female, Genes, Humans, Intelligence Tests, Male, Mutation, Reproducibility of Results, Cluster Analysis, Open Reading Frames, Genetic Predisposition to Disease, Exome

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