Genetic influences on eight psychiatric disorders based on family data of 4 408 646 full and half-siblings, and genetic data of 333 748 cases and controls

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  • E. Pettersson, Karolinska Institutet
  • ,
  • P. Lichtenstein, Karolinska Institutet
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  • H. Larsson, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden., Karolinska Institutet, School of Medical Sciences, Örebro University
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  • J. Song, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden., Karolinska Institutet
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  • Attention Deficit/Hyperactivity Disorder Working Group of the iPSYCH-Broad-PGC Consortium, Autism Spectrum Disorder Working Group of the iPSYCH-Broad-PGC Consortium, Bipolar Disorder Working Group of the PGC, Eating Disorder Working Group of the PGC, Major Depressive Disorder Working Group of the PGC, Obsessive Compulsive Disorders and Tourette Syndrome Working Group of the PGC, Schizophrenia CLOZUK, Substance Use Disorder Working Group of the PGC
  • ,
  • A. Agrawal, Internal Medicine, Washington University in St. Louis, School of Medicine
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  • A. D. Borglum
  • C. M. Bulik, Karolinska Institutet, The University of North Carolina at Chapel Hill, Department of Genetics, Chapel Hill, United States
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  • M. J. Daly, Massachusetts General Hospital, Boston, Broad Institute
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  • L. K. Davis, Vanderbilt University Medical Center
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  • D. Demontis
  • H. J. Edenberg, Indiana University School of Medicine Indianapolis
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  • J. Grove
  • J. Gelernter, Yale School of Medicine, Psychiatry
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  • B. M. Neale, Massachusetts General Hospital, Boston, Broad Institute
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  • A. F. Pardiñas, Cardiff University
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  • E. Stahl, Division of Psychiatric Genomics, Icahn School of Medicine at Mount Sinai
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  • J. T.R. Walters, Cardiff University
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  • R. Walters, Massachusetts General Hospital, Boston, Broad Institute
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  • P. F. Sullivan, Karolinska Institutet, The University of North Carolina at Chapel Hill, Department of Genetics, Chapel Hill, United States
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  • D. Posthuma, Vrije Universiteit, Amsterdam, VU University Medical Center
  • ,
  • T. J.C. Polderman, Vrije Universiteit, Amsterdam

Background Most studies underline the contribution of heritable factors for psychiatric disorders. However, heritability estimates depend on the population under study, diagnostic instruments, and study designs that each has its inherent assumptions, strengths, and biases. We aim to test the homogeneity in heritability estimates between two powerful, and state of the art study designs for eight psychiatric disorders.Methods We assessed heritability based on data of Swedish siblings (N = 4 408 646 full and maternal half-siblings), and based on summary data of eight samples with measured genotypes (N = 125 533 cases and 208 215 controls). All data were based on standard diagnostic criteria. Eight psychiatric disorders were studied: (1) alcohol dependence (AD), (2) anorexia nervosa, (3) attention deficit/hyperactivity disorder (ADHD), (4) autism spectrum disorder, (5) bipolar disorder, (6) major depressive disorder, (7) obsessive-compulsive disorder (OCD), and (8) schizophrenia.Results Heritability estimates from sibling data varied from 0.30 for Major Depression to 0.80 for ADHD. The estimates based on the measured genotypes were lower, ranging from 0.10 for AD to 0.28 for OCD, but were significant, and correlated positively (0.19) with national sibling-based estimates. When removing OCD from the data the correlation increased to 0.50.Conclusions Given the unique character of each study design, the convergent findings for these eight psychiatric conditions suggest that heritability estimates are robust across different methods. The findings also highlight large differences in genetic and environmental influences between psychiatric disorders, providing future directions for etiological psychiatric research.

Original languageEnglish
JournalPsychological Medicine
Volume49
Issue7
Pages (from-to)1166-1173
Number of pages8
ISSN0033-2917
DOIs
Publication statusPublished - May 2019

    Research areas

  • ADHD, alcohol dependence, anorexia nervosa, autism spectrum disorders, bipolar disorder, genes, heritability, major depressive disorder, obsessive compulsive disorder, schizophrenia

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