Cited by 2,084Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersGenomics and Rare Diseases

De novo mutations revealed by whole-exome sequencing are strongly associated with autism

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Sanders, Stephan J., Murtha, Michael T., Gupta, Abha R., Murdoch, John D., Raubeson, Melanie J., Willsey, A. Jeremy, Ercan-Sencicek, A. Gulhan, DiLullo, Nicholas M. +22 more·2012·Nature

Abstract

Multiple studies have confirmed the contribution of rare de novo copy number variations to the risk for autism spectrum disorders. But whereas de novo single nucleotide variants have been identified in affected individuals, their contribution to risk has yet to be clarified. Specifically, the frequency and distribution of these mutations have not been well characterized in matched unaffected controls, and such data are vital to the interpretation of de novo coding mutations observed in probands. Here we show, using whole-exome sequencing of 928 individuals, including 200 phenotypically discordant sibling pairs, that highly disruptive (nonsense and splice-site) de novo mutations in brain-expressed genes are associated with autism spectrum disorders and carry large effects. On the basis of mutation rates in unaffected individuals, we demonstrate that multiple independent de novo single nucleotide variants in the same gene among unrelated probands reliably identifies risk alleles, providing a clear path forward for gene discovery. Among a total of 279 identified de novo coding mutations, there is a single instance in probands, and none in siblings, in which two independent nonsense variants disrupt the same gene, SCN2A (sodium channel, voltage-gated, type II, α subunit), a result that is highly unlikely by chance.

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  • TADA requires a mutational model that accounts for gene size and sequence composition to obtain an expectation for mutations per gene given sample size.

    “TADA requires a mutational model (Sanders et al., 2012; Neale et al., 2012; Samocha et al., 2014) which accounts for gene size and sequence composition to obtain an expectation for mutations per gene, given sample size.”
  • 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).”
  • Genetic studies of de novo variants have consistently supported a female protective effect against ASD.

    “The possibility of a “female protective effect” (FPE) against ASD has been described extensively and has received consistent support from the results of genetic studies of de novo variants.4, 5, 6, 7, 8, 9, 10, 11, 12, 13”
  • Many types of ASD-associated de novo variants are observed more frequently in female cases.

    “Many types of ASD-associated de novo variants are observed more frequently in female cases.4, 5, 6, 7, 8, 9, 10, 11, 12, 13”
  • Previously described differences in rare variant burden, along with preliminary evidence from studies of SNP heritability, already violate the assumption of equivalent genetic architecture between male ASD and female ASD.

    “The previously described differences in rare variant burden, along with preliminary evidence from studies of SNP heritability, already violate that assumption.5, 6, 7, 8,15”

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Authors
Sanders, S. J., Murtha, M. T., Gupta, A. R., Murdoch, J. D., Raubeson, M. J., Willsey, A. J., Ercan-Sencicek, A. G., DiLullo, N. M., Parikshak, N. N., Stein, J. L., Walker, M. F., Ober, G. T., Teran, N. A., Song, Y., El-Fishawy, P., Murtha, R. C., Choi, M., Overton, J. D., Bjornson, R. D., Carriero, N. J., Meyer, K. A., Bilguvar, K., Mane, S. M., Šestan, N., Lifton, R. P., Günel, M., Roeder, K., Geschwind, D. H., Devlin, B., & State, M. W.
Affiliations
  • Yale University (US)
  • University of California, Los Angeles (US)
  • Howard Hughes Medical Institute (US)
  • Carnegie Mellon University (US)
  • University of Pittsburgh (US)
Corresponding author
  • Geschwind, Daniel H.
  • Devlin, Bernie
  • State, Matthew W.
Venue
Nature
Published
2012-04-04
Volume
485
Issue
7397
Pages
237-241
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2131104106
Cited by
2,084
References
24
Citations by year
2026: 55 · 2025: 77 · 2024: 84 · 2023: 96 · 2022: 118 · 2021: 160 · 2020: 122 · 2019: 134 · 2018: 159 · 2017: 150 · 2016: 159 · 2015: 174 · 2014: 259 · 2013: 218 · 2012: 112
FWCI
124.84
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
  • National Institute of Mental Health (K08MH087639, U01MH081896, R25MH077823)
  • National Institute of General Medical Sciences (T32GM008042)
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, single nucleotide variants, nonsense mutation, splice site mutation, brain-expressed genes, SCN2A, CHD8, locus heterogeneity, copy number variation, risk alleles, gene discovery
MeSH terms
Alleles, Autistic Disorder, Exons, Humans, Mutation, Nerve Tissue Proteins, Sodium Channels, Codon, Nonsense, Genetic Heterogeneity, Genetic Predisposition to Disease, RNA Splice Sites, Siblings, Exome, NAV1.2 Voltage-Gated Sodium Channel

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