Anxiety disorders are common, complex psychiatric disorders with twin heritabilities of 30–60%. We conducted a genome-wide association study of Lifetime Anxiety Disorder (ncase = 25 453, ncontrol = 58 113) and an additional analysis of Current Anxiety Symptoms (ncase = 19 012, ncontrol = 58 113). The liability scale common variant heritability estimate for Lifetime Anxiety Disorder was 26%, and for Current Anxiety Symptoms was 31%. Five novel genome-wide significant loci were identified including an intergenic region on chromosome 9 that has previously been associated with neuroticism, and a locus overlapping the BDNF receptor gene, NTRK2. Anxiety showed significant positive genetic correlations with depression and insomnia as well as coronary artery disease, mirroring findings from epidemiological studies. We conclude that common genetic variation accounts for a substantive proportion of the genetic architecture underlying anxiety.
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This research has been conducted using the UK Biobank Resource, under application 16577. This study represents independent research part funded by the National Institute for Health Research (NIHR) Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King’s College London. The views expressed are those of the author(s) and not necessarily those of the NHS, the NIHR or the Department of Health. High performance computing facilities were funded with capital equipment grants from the GSTT Charity (TR130505) and Maudsley Charity (980). The research reported in this publication was supported by the National Institute of Mental Health of the US National Institutes of Health under Award Number U01 MH109514. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. CK currently receives salary support from National Institute for Health Research (NIHR) and has previously received salary support from the Novo Nordisk UK Research Foundation, NIHR Biomedical Research Centre for Mental Health at South London and from the Maudsley National Health Service (NHS) Foundation Trust in the past. CR is supported by a grant from Fondation Peters to TE and GB. JH is supported by the National Institutes of Health grant R01 MH113665. The iPSYCH team acknowledges funding from the Lundbeck Foundation (grant no R102-A9118 and R155-2014-1724), the Novo Nordisk Foundation for supporting the Danish National Biobank resource, and grants from Aarhus and Copenhagen Universities and University Hospitals, including support to the iSEQ Center, the GenomeDK HPC facility, and the CIRRAU Center. K.L.P acknowledges funding from the Alexander von Humboldt Foundation and the Medical Research Council UK.
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Purves, K.L., Coleman, J.R.I., Meier, S.M. et al. A major role for common genetic variation in anxiety disorders. Mol Psychiatry 25, 3292–3303 (2020). https://doi.org/10.1038/s41380-019-0559-1
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