Article (Scientific journals)
A genome-wide linkage study of individuals with high scores on NEO personality traits
Amin, Najaf; Schuur, M.; Gusareva, Elena et al.
2011In Molecular Psychiatry
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Keywords :
CNV; family; haplotype; linkage; NEO; pedigree
Abstract :
[en] The NEO-Five-Factor Inventory divides human personality traits into five dimensions: neuroticism, extraversion, openness, conscientiousness and agreeableness. In this study, we sought to identify regions harboring genes with large effects on the five NEO personality traits by performing genome-wide linkage analysis of individuals scoring in the extremes of these traits ( > 90th percentile). Affected-only linkage analysis was performed using an Illumina 6K linkage array in a family-based study, the Erasmus Rucphen Family study. We subsequently determined whether distinct, segregating haplotypes found with linkage analysis were associated with the trait of interest in the population. Finally, a dense single-nucleotide polymorphism genotyping array (Illumina 318K) was used to search for copy number variations (CNVs) in the associated regions. In the families with extreme phenotype scores, we found significant evidence of linkage for conscientiousness to 20p13 (rs1434789, log of odds (LOD) = 5.86) and suggestive evidence of linkage (LOD > 2.8) for neuroticism to 19q, 21q and 22q, extraversion to 1p, 1q, 9p and12q, openness to 12q and 19q, and agreeableness to 2p, 6q, 17q and 21q. Further analysis determined haplotypes in 21q22 for neuroticism (P-values = 0.009, 0.007), in 17q24 for agreeableness (marginal P-value = 0.018) and in 20p13 for conscientiousness (marginal P-values = 0.058, 0.038) segregating in families with large contributions to the LOD scores. No evidence for CNVs in any of the associated regions was found. Our findings imply that there may be genes with relatively large effects involved in personality traits, which may be identified with next-generation sequencing techniques.
Disciplines :
Psychiatry
Author, co-author :
Amin, Najaf;  Erasmus University Medical Center, Rotterdam, The Netherlands > Department of Epidemiology
Schuur, M.;  Erasmus University Medical Center, Rotterdam, The Netherlands > Department of Epidemiology
Gusareva, Elena ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Bioinformatique
Isaacs, Aaron;  Erasmus University Medical Center, Rotterdam, The Netherlands > Department of Epidemiology
Aulchenko, Yuri;  Erasmus University Medical Center, Rotterdam, The Netherlands > Department of Epidemiology
Kirichenko, A. V.;  Institute of Cytology and Genetics, Russian Academy of Science, Novosibirsk, Russia
Zorkoltseva, I. V.;  Institute of Cytology and Genetics, Russian Academy of Science, Novosibirsk, Russia
Axenovich, Tatyana;  Novosibirsk State University, Novosibirsk, Russia > Department of Cytology and Genetics
Oostra, B. A.;  Erasmus University Medical Center, Rotterdam, The Netherlands > Department of Epidemiology
Janssens, ACJW;  Erasmus University Medical Center, Rotterdam, The Netherlands > Department of Epidemiology
van Duijn, Cornelia M;  Erasmus University Medical Center, Rotterdam, The Netherlands > Department of Epidemiology
Language :
English
Title :
A genome-wide linkage study of individuals with high scores on NEO personality traits
Publication date :
09 August 2011
Journal title :
Molecular Psychiatry
ISSN :
1359-4184
eISSN :
1476-5578
Publisher :
Nature Publishing Group, Houndmills, United Kingdom
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 January 2012

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