Cited by 157Suicide and Self-Harm StudiesGenetic Associations and EpidemiologySchizophrenia research and treatment

Genetics of suicide attempts in individuals with and without mental disorders: a population-based genome-wide association study

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Erlangsen, Annette, Appadurai, Vivek, Wang, Yunpeng, Turecki, Gustavo, Mors, Ole, Werge, Thomas, Mortensen, Preben B., Starnawska, Anna +9 more·2020·Molecular Psychiatry

Abstract

Family studies have shown an aggregation of suicidal behavior in families. Yet, molecular studies are needed to identify loci accounting for genetic heritability. We conducted a genome-wide association study and estimated single nucleotide polymorphisms (SNP) heritability for a suicide attempt. In a case-cohort study, national data on all individuals born in Denmark after 1981 and diagnosed with severe mental disorders prior to 2013 ( n = 57,377) and individuals from the general population ( n = 30,000) were obtained. After quality control, the sample consisted of 6024 cases with an incidence of suicide attempt and 44,240 controls with no record of a suicide attempt. Suggestive associations between SNPs, rs6880062 ( p -value: 5.4 × 10 −8 ) and rs6880461 ( p -value: 9.5 × 10 −8 ), and suicide attempt were identified when adjusting for socio-demographics. Adjusting for mental disorders, three significant associations, all on chromosome 20, were identified: rs4809706 ( p -value: 2.8 × 10 −8 ), rs4810824 ( p -value: 3.5 × 10 −8 ), and rs6019297 ( p -value: 4.7 × 10 8 ). Sub-group analysis of cases with affective disorders revealed SNPs associated with suicide attempts when compared to the general population for gene PDE4B. All SNPs explained 4.6% [CI-95: 2.9–6.3%] of the variation in suicide attempt. Controlling for mental disorders reduced the heritability to 1.9% [CI-95: 0.3–3.5%]. Affective and autism spectrum disorders exhibited a SNP heritability of 5.6% [CI-95: 1.9–9.3%] and 9.6% [CI-95: 1.1–18.1%], respectively. Using the largest sample to date, we identified significant SNP associations with suicide attempts and support for a genetic transmission of suicide attempt, which might not solely be explained by mental disorders.

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  • Candidate-gene-based studies and GWAS have not produced consistent results, with genes of interest frequently failing to pass rigorous reproducibility and significance testing.

    “overall, candidate-gene-based studies 44,45 and GWAS 30,40,46-49 have not produced consistent results, with genes of interest frequently failing to pass rigorous reproducibility and significance testing.”

    From Suicide and suicide risk (2019) · cites this paper as [46]

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Research works printed but not linked: 2

  1. Hawton K, van Heeringen K. Suicide. Lancet. 2009;373:1372-81.
  2. Stein MB, Ware EB, Mitchell C, Chen CY, Borja S, Cai T, et al. Genome wide association studies of suicide attempts in US sol- diers. Am J Med Genet B Neuropsychiatr Genet. 2017;174:786-97.

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Authors
Erlangsen, A., Appadurai, V., Wang, Y., Turecki, G., Mors, O., Werge, T., Mortensen, P. B., Starnawska, A., Børglum, A. D., Schork, A., Nudel, R., Bækvad-Hansen, M., Bybjerg-Grauholm, J., Hougaard, D. M., Thompson, W. K., Nordentoft, M., & Agerbo, E.
Affiliations
  • Australian National University (AU)
  • Sankt Hans Hospital (DK)
  • University of Oslo (NO)
  • Douglas Mental Health University Institute (CA)
  • Aarhus University Hospital (DK)
  • University of Copenhagen (DK)
  • Aarhus University (DK)
  • Statens Serum Institut (DK)
Corresponding author
Erlangsen, Annette
Venue
Molecular Psychiatry
Published
2018-08-16
Volume
25
Issue
10
Pages
2410-2421
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W2885057788
Cited by
157
References
76
Citations by year
2026: 3 · 2025: 18 · 2024: 21 · 2023: 25 · 2022: 24 · 2021: 30 · 2020: 19 · 2019: 15 · 2018: 2
FWCI
19.39
Type
journal article
Language
en
Open access
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed Central (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • ANU Open Research (Australian National University) (submittedVersion)
Funders
Lundbeckfonden (R102-A9118, R155-2014-1724)
Topics
  • Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
Keywords
suicide attempts, heritability, single nucleotide polymorphisms, PDE4B, chromosome 20, mood disorders, autism spectrum disorder, mental illness, genetic loci
MeSH terms
Adolescent, Adult, Mental Disorders, Female, Humans, Male, Suicide, Attempted, Cohort Studies, Mood Disorders, Genome-Wide Association Study, Young Adult, Suicidal Ideation

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