Cited by 243Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersGenomics and Rare Diseases

Prevalence of SHANK3 variants in patients with different subtypes of autism spectrum disorders

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Boccuto, Luigi, Lauri, Maria, Sarasua, Sara M, Skinner, Cindy D, Buccella, Daniela, Dwivedi, Alka, Orteschi, Daniela, Collins, Julianne S +9 more·2013·European Journal of Human Genetics

Abstract

Autism spectrum disorders (ASDs) include three main conditions: autistic disorder (AD), pervasive developmental disorder, not otherwise specified (PDD-NOS), and Asperger syndrome. It has been shown that many genes associated with ASDs are involved in the neuroligin-neurexin interaction at the glutamate synapse: NLGN3, NLGN4, NRXN1, CNTNAP2, and SHANK3. We screened this last gene in two cohorts of ASD patients (133 patients from US and 88 from Italy). We found 5/221 (2.3%) cases with pathogenic alterations: a 106 kb deletion encompassing the SHANK3 gene, two frameshift mutations leading to premature stop codons, a missense mutation (p.Pro141Ala), and a splicing mutation (c.1820-4 G>A). Additionally, in 17 patients (7.7%) we detected a c.1304+48C>T transition affecting a methylated cytosine in a CpG island. This variant is reported as SNP rs76224556 and was found in both US and Italian controls, but it results significantly more frequent in our cases than in the control cohorts. The variant is also significantly more common among PDD-NOS cases than in AD cases. We also screened this gene in an independent replication cohort of 104 US patients with ASDs, in which we found a missense mutation (p.Ala1468Ser) in 1 patient (0.9%), and in 8 patients (7.7%) we detected the c.1304+48C>T transition. While SHANK3 variants are present in any ASD subtype, the SNP rs76224556 appears to be significantly associated with PDD-NOS cases. This represents the first evidence of a genotype-phenotype correlation in ASDs and highlights the importance of a detailed clinical-neuropsychiatric evaluation for the effective genetic screening of ASD patients.

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  • In other cases with almost identical small microdeletions including SHANK3, neurobehavioral phenotypes were quite variable.

    “Similarly, in other cases with almost identical small microdeletions (<100 kb) including SHANK3, neurobehavioral phenotypes were quite variable (Boccuto et al., 2013; Bonaglia et al., 2011; Dhar et al., 2010).”

    From Modeling Autism by SHANK Gene Mutations in Mice (2013) · cites this paper as Boccuto et al., 2013

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Authors
Boccuto, L., Lauri, M., Sarasua, S. M., Skinner, C. D., Buccella, D., Dwivedi, A., Orteschi, D., Collins, J. S., Zollino, M., Visconti, P., DuPont, B., Tiziano, D., Schroer, R. J., Neri, G., Stevenson, R. E., Gurrieri, F., & Schwartz, C. E.
Affiliations
  • Greenwood Genetic Center (US)
  • Università Cattolica del Sacro Cuore (IT)
  • Ospedale Maggiore Carlo Alberto Pizzardi (IT)
Corresponding author
Schwartz, Charles E
Venue
European Journal of Human Genetics
Published
2012-08-15
Volume
21
Issue
3
Pages
310-316
ISSN
  • 1018-4813 (ISSN-L)
  • 1476-5438
OpenAlex
W2016364319
Cited by
240
References
51
Citations by year
2026: 7 · 2025: 13 · 2024: 20 · 2023: 21 · 2022: 18 · 2021: 21 · 2020: 22 · 2019: 13 · 2018: 23 · 2017: 16 · 2016: 13 · 2015: 18 · 2014: 21 · 2013: 14
FWCI
8.69
Type
journal article
Language
en
Open access
Locations
  • European Journal of Human Genetics (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01hd026202-15)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01-HD026202, HD 26202)
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
SHANK3, autism spectrum disorder, pervasive developmental disorder not otherwise specified, autistic disorder, Asperger syndrome, genotype-phenotype correlation, frameshift mutation, missense mutations, splicing mutation, CpG island methylation, genetic screening
MeSH terms
Child, Child Development Disorders, Pervasive, Cytosine, Female, Humans, Italy, Male, Mutation, Nerve Tissue Proteins, South Carolina, Cohort Studies, Gene Deletion, CpG Islands, Polymorphism, Single Nucleotide, Asperger Syndrome, Genetic Association Studies

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