Cited by 114Genetics and Neurodevelopmental DisordersGenomics and Rare DiseasesHereditary Neurological Disorders

Germline De Novo Mutations in GNB1 Cause Severe Neurodevelopmental Disability, Hypotonia, and Seizures

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Petrovski, Slavé, Küry, Sébastien, Myers, Candace T., Anyane-Yeboa, Kwame, Cogné, Benjamin, Bialer, Martin, Xia, Fan, Hemati, Parisa +38 more·2016·The American Journal of Human Genetics

Abstract

Whole-exome sequencing of 13 individuals with developmental delay commonly accompanied by abnormal muscle tone and seizures identified de novo missense mutations enriched within a sub-region of GNB1, a gene encoding the guanine nucleotide-binding protein subunit beta-1, Gβ. These 13 individuals were identified among a base of 5,855 individuals recruited for various undiagnosed genetic disorders. The probability of observing 13 or more de novo mutations by chance among 5,855 individuals is very low (p = 7.1 × 10(-21)), implicating GNB1 as a genome-wide-significant disease-associated gene. The majority of these 13 mutations affect known Gβ binding sites, which suggests that a likely disease mechanism is through the disruption of the protein interface required for Gα-Gβγ interaction (resulting in a constitutively active Gβγ) or through the disruption of residues relevant for interaction between Gβγ and certain downstream effectors (resulting in reduced interaction with the effectors). Strikingly, 8 of the 13 individuals recruited here for a neurodevelopmental disorder have a germline de novo GNB1 mutation that overlaps a set of five recurrent somatic tumor mutations for which recent functional studies demonstrated a gain-of-function effect due to constitutive activation of G protein downstream signaling cascades for some of the affected residues.

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Crossref · 10.1016/j.ajhg.2016.03.011

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Authors
Petrovski, S., Küry, S., Myers, C. T., Anyane-Yeboa, K., Cogné, B., Bialer, M., Xia, F., Hemati, P., Riviello, J., Mehaffey, M., Besnard, T., Becraft, E., Wadley, A., Politi, A. R., Colombo, S., Zhu, X., Ren, Z., Andrews, I., Dudding-Byth, T., Schneider, A. L., Wallace, G., Rosen, A. B. I., Schelley, S., Enns, G. M., Corre, P., Dalton, J., Mercier, S., Latypova, X., Schmitt, S., Guzman, E., Moore, C., Bier, L., Heinzen, E. L., Karachunski, P., Shur, N., Grebe, T., Basinger, A., Nguyen, J. M., Bézieau, S., Wierenga, K., Bernstein, J. A., Scheffer, I. E., Rosenfeld, J. A., Mefford, H. C., Isidor, B., & Goldstein, D. B.
Affiliations
  • The Royal Melbourne Hospital (AU)
  • Centre Hospitalier Universitaire de Nantes (FR)
  • University of Washington (US)
  • Northwell Health (US)
  • Baylor College of Medicine (US)
  • Columbia University (US)
  • Stanford Medicine (US)
  • University of Oklahoma (US)
  • UNSW Sydney (AU)
  • The University of Melbourne (AU)
  • University of Minnesota (US)
  • Albany Med Health System (US)
  • Phoenix Children's Hospital (US)
  • Cook Children's Medical Center (US)
  • The University of Texas Health Science Center at Houston (US)
  • Royal Children's Hospital (AU)
  • Columbia University Irving Medical Center (US)
Corresponding author
  • Petrovski, Slavé
  • Goldstein, David B.
Venue
The American Journal of Human Genetics
Publisher
Elsevier BV
Published
2016-05
Volume
98
Issue
5
Pages
1001-1010
ISSN
0002-9297 (ISSN-L)
OpenAlex
W2342032633
Cited by
114
References
32
Citations by year
2026: 4 · 2025: 7 · 2024: 11 · 2023: 8 · 2022: 15 · 2021: 14 · 2020: 12 · 2019: 19 · 2018: 8 · 2017: 11 · 2016: 5
FWCI
11.57
Type
journal article
Language
en
Open access
Locations
  • The American Journal of Human Genetics (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • NOVA (University of Newcastle Australia) (submittedVersion)
Funders
  • National Human Genome Research Institute (UM1HG006493)
  • National Institute of Neurological Disorders and Stroke (R01NS069605)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (U54HD083091)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomics and Rare Diseases
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
Keywords
GNB1, de novo mutations, missense mutations, Gβγ, neurodevelopmental disorders, developmental delay, hypotonia, seizures, gain-of-function, undiagnosed genetic disorders
MeSH terms
Adolescent, Adult, Child, Developmental Disabilities, Child, Preschool, Female, Humans, Infant, Male, Intellectual Disability, Muscle Hypotonia, Phenotype, Protein Conformation, Seizures, Signal Transduction, Germ-Line Mutation, GTP-Binding Protein beta Subunits, Young Adult, Exome

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