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Genetic Associations Between Childhood Psychopathology and Adult Depression and Associated Traits in 42 998 Individuals: A Meta-Analysis

Bipolar Disorder Working Group of the, Psychiatric Genetics Consortium, Major Depressive Disorder Working Group, of the Psychiatric Genetics Consortium, Gordon-Smith, Katherine ORCID: https://orcid.org/0000-0003-4083-1143, Jones, Lisa ORCID: https://orcid.org/0000-0002-5122-8334 and Perry, Amy ORCID: https://orcid.org/0000-0002-9381-6636 (2020) Genetic Associations Between Childhood Psychopathology and Adult Depression and Associated Traits in 42 998 Individuals: A Meta-Analysis. JAMA Psychiatry. ISSN Print: 2168-622X Online: 2168-6238 (In Press)

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Abstract

Importance: Adult mood disorders are often preceded by behavioural and emotional problems in childhood. It is yet unclear what explains the associations between childhood psychopathology and adult traits.
Objective: To investigate whether genetic risk for adult mood disorders and related traits influence childhood disorders.
Design: This cohort study meta-analysed data from seven ongoing longitudinal birth and childhood cohorts. The starts of data collection varied, ranging from July 1985 to April 2002. Data analysis was performed from September 2017 to May 2019.
Setting: Seven population-based cohorts from the UK, the Netherlands, Sweden, Norway and Finland.
Participants: 42,998 participants were repeatedly assessed for childhood psychopathology from age 6 to 17 years.
Exposures: Individual polygenic scores (PGS) were constructed in children based on well-powered genome-wide association studies (GWAS) of adult major depression (MD) and bipolar disorder (BD), as well as subjective well-being (SWB), neuroticism, insomnia, educational attainment (EA), and body mass index (BMI).
Main Outcomes and Measures: We used regression meta-analyses to test the associations between the PGS and symptoms of attention-deficit/hyperactivity disorder (ADHD), internalizing problems, and social problems, measured repeatedly across childhood and adolescence, and whether these associations were dependent on childhood phenotype, age, and rater.
Results: We obtained a sample size of 42,998 unique participants aged 6 to 17. The percentage of male participants ranged from 43% to 52% across all cohorts. PGS of adult MD, neuroticism, BMI, and insomnia were positively associated with childhood psychopathology (beta estimates ranged from 0.023 – 0.042, C.I = 0.017 – 0.049) while associations with PGS of SWB and EA were negative (-0.026 – -0.046 (-0.020 – -0.057)). BD PGS did not show any association. We found no effect of age, type of childhood phenotype or rater on the associations except for BMI PGS and EA PGS. We report stronger associations between EA PGS and ADHD compared to internalizing and social problems, and between BMI PGS and social problems and ADHD compared to internalizing. Furthermore, the association between EA PGS and ADHD increased with age.
Conclusions and Relevance: Results from this study suggest the existence of a set of genetic factors influencing a range of traits across the lifespan with stable effects present throughout childhood. Knowledge of underlying mechanisms may impact treatment and long-term outcomes of individuals with psychopathology.

Item Type: Article
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The full-text of the online published article can be accessed via the official URL.

This is an open access article distributed under the terms of the CC-BY License. © 2020 Akingbuwa WA et al. JAMA Psychiatry.

Uncontrolled Discrete Keywords: longitudinal meta-analysis, childhood psychopathology, adult depression, shared genetic factors
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: College of Health, Life and Environmental Sciences > School of Allied Health and Community
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Copyright Info: Open access article
Depositing User: Katherine Gordon-Smith
Date Deposited: 20 Feb 2020 15:47
Last Modified: 17 Jun 2020 17:34
URI: https://eprints.worc.ac.uk/id/eprint/9188

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