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  • Lo, Min-Tzu, et al. (author)
  • Genome-wide analyses for personality traits identify six genomic loci and show correlations with psychiatric disorders
  • 2017
  • In: Nature Genetics. - : Springer Science and Business Media LLC. - 1061-4036 .- 1546-1718. ; 49:1, s. 152-156
  • Journal article (peer-reviewed)abstract
    • Personality is influenced by genetic and environmental factors(1) and associated with mental health. However, the underlying genetic determinants are largely unknown. We identified six genetic loci, including five novel loci(2,3), significantly associated with personality traits in a meta-analysis of genome-wide association studies (N = 123,132-260,861). Of these genome-wide significant loci, extraversion was associated with variants in WSCD2 and near PCDH15, and neuroticism with variants on chromosome 8p23.1 and in L3MBTL2. We performed a principal component analysis to extract major dimensions underlying genetic variations among five personality traits and six psychiatric disorders (N = 5,422-18,759). The first genetic dimension separated personality traits and psychiatric disorders, except that neuroticism and openness to experience were clustered with the disorders. High genetic correlations were found between extraversion and attention-deficit- hyperactivity disorder (ADHD) and between openness and schizophrenia and bipolar disorder. The second genetic dimension was closely aligned with extraversion-introversion and grouped neuroticism with internalizing psychopathology (e.g., depression or anxiety).
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2.
  • Silventoinen, Karri, et al. (author)
  • Education in twins and their parents across birth cohorts over 100 years : an individual-level pooled analysis of 42 twin cohorts
  • 2017
  • In: Twin Research and Human Genetics. - Stockholm : Karolinska Institutet, Dept of Medical Epidemiology and Biostatistics. - 1832-4274 .- 1839-2628.
  • Journal article (peer-reviewed)abstract
    • Whether monozygotic (MZ) and dizygotic (DZ) twins differ from each other in a variety of phenotypes is important for genetic twin modeling and for inferences made from twin studies in general. We analyzed whether there were differences in individual, maternal and paternal education between MZ and DZ twins in a large pooled dataset. Information was gathered on individual education for 218,362 adult twins from 27 twin cohorts (53% females; 39% MZ twins), and on maternal and paternal education for 147,315 and 143,056 twins respectively, from 28 twin cohorts (52% females; 38% MZ twins). Together, we had information on individual or parental education from 42 twin cohorts representing 19 countries. The original education classifications were transformed to education years and analyzed using linear regression models. Overall, MZ males had 0.26 (95% CI [0.21, 0.31]) years and MZ females 0.17 (95% CI [0.12, 0.21]) years longer education than DZ twins. The zygosity difference became smaller in more recent birth cohorts for both males and females. Parental education was somewhat longer for fathers of DZ twins in cohorts born in 1990-1999 (0.16 years, 95% CI [0.08, 0.25]) and 2000 or later (0.11 years, 95% CI [0.00, 0.22]), compared with fathers of MZ twins. The results show that the years of both individual and parental education are largely similar in MZ and DZ twins. We suggest that the socio-economic differences between MZ and DZ twins are so small that inferences based upon genetic modeling of twin data are not affected.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Andreassen, Ole A (1)
Hopper, John L. (1)
Lichtenstein, Paul (1)
Almqvist, Catarina (1)
Tynelius, Per (1)
Magnusson, Patrik K ... (1)
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Pedersen, Nancy L (1)
Latvala, Antti (1)
Stefansson, Kari (1)
Willemsen, Gonneke (1)
Martin, Nicholas G. (1)
Boomsma, Dorret I. (1)
Kaprio, Jaakko (1)
Rebato, Esther (1)
Ullemar, Vilhelmina (1)
Smeland, Olav B. (1)
Gatz, Margaret (1)
Rasmussen, Finn (1)
Sorensen, Thorkild I ... (1)
Tuvblad, Catherine, ... (1)
Montgomery, Grant W. (1)
Loos, Ruth J F (1)
Stefánsson, Hreinn (1)
Kauppi, Karolina (1)
Dahl Aslan, Anna K., ... (1)
Maes, Hermine H. (1)
Baker, Laura A. (1)
Buchwald, Dedra (1)
Turkheimer, Eric (1)
Franz, Carol E. (1)
Kremen, William S. (1)
Whitfield, Keith E. (1)
Medland, Sarah E (1)
Bartels, Meike (1)
Hinds, David A. (1)
McGue, Matt (1)
Tucker-Drob, Elliot ... (1)
Tung, Joyce Y. (1)
Cozen, Wendy (1)
Harris, Jennifer R. (1)
van Beijsterveldt, C ... (1)
Escott-Price, Valent ... (1)
Burt, S. Alexandra (1)
Klump, Kelly L (1)
Wang, Yunpeng (1)
Chen, Chi-Hua (1)
Lo, Min-Tzu (1)
Schork, Andrew (1)
Fan, Chun-Chieh (1)
Holland, Dominic (1)
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University
Umeå University (1)
Örebro University (1)
Jönköping University (1)
University of Skövde (1)
Karolinska Institutet (1)
Language
English (2)
Research subject (UKÄ/SCB)
Medical and Health Sciences (2)
Natural sciences (1)
Social Sciences (1)
Year
2017 (2)Undo refine

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