Cited by 193Genomic variations and chromosomal abnormalitiesGenomics and Rare DiseasesGenetics and Neurodevelopmental Disorders

Rare variants in the genetic background modulate cognitive and developmental phenotypes in individuals carrying disease-associated variants

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Pizzo, Lucilla, Jensen, Matthew, Polyak, Andrew, Rosenfeld, Jill A., Mannik, Katrin, Krishnan, Arjun, McCready, Elizabeth, Pichon, Olivier +48 more·2019·Genetics in Medicine

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Abstract

PURPOSE: To assess the contribution of rare variants in the genetic background toward variability of neurodevelopmental phenotypes in individuals with rare copy-number variants (CNVs) and gene-disruptive variants. METHODS: We analyzed quantitative clinical information, exome sequencing, and microarray data from 757 probands and 233 parents and siblings who carry disease-associated variants. RESULTS: The number of rare likely deleterious variants in functionally intolerant genes ("other hits") correlated with expression of neurodevelopmental phenotypes in probands with 16p12.1 deletion (n=23, p=0.004) and in autism probands carrying gene-disruptive variants (n=184, p=0.03) compared with their carrier family members. Probands with 16p12.1 deletion and a strong family history presented more severe clinical features (p=0.04) and higher burden of other hits compared with those with mild/no family history (p=0.001). The number of other hits also correlated with severity of cognitive impairment in probands carrying pathogenic CNVs (n=53) or de novo pathogenic variants in disease genes (n=290), and negatively correlated with head size among 80 probands with 16p11.2 deletion. These co-occurring hits involved known disease-associated genes such as SETD5, AUTS2, and NRXN1, and were enriched for cellular and developmental processes. CONCLUSION: Accurate genetic diagnosis of complex disorders will require complete evaluation of the genetic background even after a candidate disease-associated variant is identified.

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  • Pizzo et al. tested RNA knockdown of 16p11.2 genes on more than 20 Drosophila phenotypes and found that combinations of multiple genes elicit varied effects on eye, wing, and nervous system development.

    “Pizzo et al, tested the effect of RNA-knockdown of genes on >20 classic phenotypes used to assess development in Drosophila (Pizzo et al., 2018). This study found that combinations of multiple 16p11.2 genes could elicit a variety of effects on development of the eye, wing and nervous system.”

    From Getting to the cores of autism (2019) · cites this paper as Pizzo et al., 2018

  • Similar correlation between clinical severity and secondary rare variant number is observed for ASD subjects carrying gene-disrupting de novo mutations.

    “Subsequent studies have shown that the clinical severity of subjects who carry CNVs at 1q21.1, 7q11.23 and 16p11.2 correlates with the number of secondary rare variants, and similar results have been observed for ASD subjects who carry gene disrupting de novo mutations (Pizzo et al., 2018).”

    From Getting to the cores of autism (2019) · cites this paper as Pizzo et al., 2018

  • Transcriptomic analysis of developing brain in transgenic mouse models of SETD5, FOXP1, and TBR1 suggests that mutations in these genes lead to dysregulation of ASD genes in trans.

    “Similarly transcriptomic analysis of developing brain in transgenic mouse models of SETD5 (Pizzo et al., 2018), FOXP1 (Araujo et al., 2015), TBR1 (Notwell et al., 2016) suggests that mutations in these genes leads to the dysregulation of ASD genes in trans.”

    From Getting to the cores of autism (2019) · cites this paper as Pizzo et al., 2018

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Authors
Pizzo, L., Jensen, M., Polyak, A., Rosenfeld, J. A., Mannik, K., Krishnan, A., McCready, E., Pichon, O., Le Caignec, C., Van Dijck, A., Pope, K., Voorhoeve, E., Yoon, J., Stankiewicz, P., Cheung, S. W., Pazuchanics, D., Huber, E., Kumar, V., Kember, R. L., Mari, F., Curró, A., Castiglia, L., Galesi, O., Avola, E., Mattina, T., Fichera, M., Mandarà, L., Vincent, M., Nizon, M., Mercier, S., Bénéteau, C., Blesson, S., Martin-Coignard, D., Mosca-Boidron, A.-L., Caberg, J.-H., Bucan, M., Zeesman, S., Nowaczyk, M. J. M., Lefebvre, M., Faivre, L., Callier, P., Skinner, C., Keren, B., Perrine, C., Prontera, P., Marle, N., Renieri, A., Reymond, A., Kooy, R. F., Isidor, B., Schwartz, C., Romano, C., Sistermans, E., Amor, D. J., Andrieux, J., & Girirajan, S.
Affiliations
  • Pennsylvania State University (US)
  • Baylor College of Medicine (US)
  • Michigan State University (US)
  • McMaster University (CA)
  • Centre Hospitalier Universitaire de Nantes (FR)
  • Royal Children's Hospital (AU)
  • Amsterdam UMC Location University of Amsterdam (NL)
  • University of Pennsylvania (US)
  • University of Siena (IT)
  • I.R.C.C.S. Oasi Maria SS (IT)
  • University of Catania (IT)
  • University of Ragusa (IT)
  • Centre Hospitalier Universitaire de Liège (BE)
  • CHU Dijon Bourgogne (FR)
  • Greenwood Genetic Center (US)
  • Pitié-Salpêtrière Hospital (FR)
  • University of Lausanne (CH)
  • University of Antwerp (BE)
  • Centre Hospitalier Universitaire de Lille (FR)
Corresponding author
Girirajan, Santhosh
Venue
Genetics in Medicine
Publisher
Elsevier BV
Published
2019-04
Volume
21
Issue
4
Pages
816-825
ISSN
1098-3600 (ISSN-L)
OpenAlex
W2892078296
Cited by
193
References
44
Citations by year
2026: 3 · 2025: 18 · 2024: 38 · 2023: 21 · 2022: 35 · 2021: 28 · 2020: 26 · 2019: 23 · 2018: 1
FWCI
11.77
Type
journal article
Language
en
Open access
Locations
  • Genetics in Medicine (publishedVersion, cc-by-nc-nd)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Pure Amsterdam UMC (publishedVersion, other-oa)
  • Amsterdam UMC (VU Amsterdam) - Institutional Repository (publishedVersion, other-oa)
  • SERVAL (Université de Lausanne) (acceptedVersion, cc-by-nc-nd)
  • IRIS (submittedVersion, cc-by-nc-nd)
  • HAL (submittedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by-nc-nd)
  • Open Repository and Bibliography (University of Liège) (submittedVersion)
  • Use Siena air (University of Siena) (submittedVersion, other-oa)
  • Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
Funders
  • National Science Foundation (31003A_160203)
  • Agencia Nacional de Investigación e Innovación
  • National Alliance for Research on Schizophrenia and Depression (22535)
  • Simons Foundation Autism Research Initiative (399894)
  • US-UK Fulbright Commission
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (160203)
  • Ministero della Salute
  • Jacobs Foundation
  • National Institutes of Health (NIH T32, NIH-R01)
  • Huck Institutes of the Life Sciences
  • National Institute of General Medical Sciences (T32GM102057, R01GM121907)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
rare variants, genetic background, copy number variation, neurodevelopmental phenotype, cognitive impairment, autism spectrum disorder, 16p11.2 deletion, de novo mutations, family history (medicine), head size, SETD5, AUTS2, NRXN1, genetic diagnosis
MeSH terms
Genetic Background, Autistic Disorder, Calcium-Binding Proteins, Chromosomes, Human, Pair 16, Cognition, Cytoskeletal Proteins, Female, Gene Expression Regulation, Genetic Carrier Screening, Humans, Male, Methyltransferases, Nerve Tissue Proteins, Parents, Pedigree, Phenotype, Proteins, Transcription Factors, Cell Adhesion Molecules, Neuronal, Sequence Deletion, Neural Cell Adhesion Molecules, Siblings, DNA Copy Number Variations

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