Cited by 94Genomic variations and chromosomal abnormalitiesSchizophrenia research and treatmentGenetic Associations and Epidemiology

De Novo Rates and Selection of Schizophrenia-Associated Copy Number Variants

Rees, Elliott, Moskvina, Valentina, Owen, Michael J., O'Donovan, Michael C., Kirov, George·2011·Biological Psychiatry

Abstract

Background At least 10 large and rare recurrent DNA copy number variants (CNVs) have been identified as risk factors for schizophrenia and other neurodevelopmental disorders. Because such conditions are associated with reduced fecundity, these pathogenic CNVs should be filtered out from the population by selection and must be replenished by de novo events.Methods To estimate the mutation rate (μ) for these CNVs and the selection pressure (s) against them, we first conducted a literature review on the rate of each of these CNVs in the population and the rate of their de novo occurrence. In each generation, the number of CNVs lost because of reduced fertility must be replenished by the same number of de novo CNVs. Therefore, the observed ratio of de novo versus all (inherited + de novo) CNVs approximates the selection coefficient (s) of that CNV. The mutation rate approximates to μ = s × q, where q is the frequency of the CNV in the population.Results High selection pressure operates at all these loci (s = .12 - .88), suggesting that following de novo occurrence, each of these CNVs persists in the population in only a few generations. The mutation rate for each CNV is high, affecting between 1:3500 and 1:30,000 individuals. The rarest CNVs have the highest selection coefficients.Conclusions The CNVs that increase risk to develop schizophrenia are caused by recent de novo mutations and are under strong selection pressure. They persist in the population because of high mutation rates.

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Crossref · 10.1016/j.biopsych.2011.07.011

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Authors
Rees, E., Moskvina, V., Owen, M. J., O'Donovan, M. C., & Kirov, G.
Affiliations
Cardiff University (GB)
Corresponding author
Kirov, George
Venue
Biological Psychiatry
Publisher
Elsevier BV
Published
2011-12
Volume
70
Issue
12
Pages
1109-1114
ISSN
0006-3223 (ISSN-L)
OpenAlex
W2068817758
Cited by
94
References
52
Citations by year
2025: 1 · 2024: 3 · 2023: 3 · 2022: 3 · 2021: 3 · 2020: 3 · 2019: 7 · 2018: 2 · 2017: 4 · 2016: 8 · 2015: 7 · 2014: 14 · 2013: 15 · 2012: 17
FWCI
9.96
Type
journal article
Language
en
Open access
closed
Locations
  • Biological Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
Keywords
schizophrenia, copy number variation, de novo mutations, mutation rate, selection pressure, selection coefficients, recurrent CNVs, neurodevelopmental disorders, fecundity, population genetics
MeSH terms
Algorithms, Gene Frequency, Humans, Models, Biological, Risk Factors, Schizophrenia, Selection, Genetic, DNA Copy Number Variations, Mutation Rate

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