title: Association study between dopamine D3 receptor gene variant and personality traits.
abstract: Dopamine receptor gene variation has been hypothesized to influence personality traits characterized by novelty seeking and related traits. We analyzed a dopamine D(3) receptor gene (DRD3) variant in a Swedish population (n = 373) investigated with one or more of several personality questionnaires. No significant relationships were found between DRD3 genotypes and any of the 15 Karolinska Scales of Personality (KSP) and five Health-relevant Personality 5 factor inventory (HP5i) scales. The DRD3 variant was associated with some scales related to novelty seeking: the Swedish universities Scales of Personality (SSP) Adventure Seeking and the revised NEO personality inventory (NEO-PI-R) Fantasy (O1) and Order (C2) scales. There were also associations with the Temperament and Character Inventory (TCI) Cooperativeness and Compassion (C4) scales. After correction for multiple testing, however, no significant difference remained. We conclude that the investigated DRD3 polymorphism does not have a major impact on personality in the investigated population.
authors.affiliation: Department of Clinical Neuroscience, Psychiatry Section, Karolinska Institutet, Stockholm, Sweden. erikj@ks.se
authors.forename: Erik G
authors.initials: EG
authors.lastname: Jönsson
authors.forename: Edgar
authors.initials: E
authors.lastname: Burgert
authors.forename: Marc-Antoine
authors.initials: MA
authors.lastname: Crocq
authors.forename: J Petter
authors.initials: JP
authors.lastname: Gustavsson
authors.forename: Kaj
authors.initials: K
authors.lastname: Forslund
authors.forename: Marja
authors.initials: M
authors.lastname: Mattila-Evenden
authors.forename: Gunnar
authors.initials: G
authors.lastname: Rylander
authors.forename: Lena K
authors.initials: LK
authors.lastname: Flyckt
authors.forename: Lars
authors.initials: L
authors.lastname: Bjerkenstedt
authors.forename: Frits-Axel
authors.initials: FA
authors.lastname: Wiesel
authors.forename: Marie
authors.initials: M
authors.lastname: Asberg
authors.forename: Hans
authors.initials: H
authors.lastname: Bergman
mesh_terms: D019943:Amino Acid Substitution; D000850:Anomie; D005787:Gene Frequency; D014644:Genetic Variation / Q000502:physiology*; D005838:Genotype; D006801:Humans; D020125:Mutation, Missense; D010551:Personality / Q000235:genetics*; D017448:Receptors, Dopamine D2 / Q000235:genetics* / Q000502:physiology; D050637:Receptors, Dopamine D3; D011795:Surveys and Questionnaires; D013694:Temperament
chemical_list: C493593:DRD3 protein, human; D017448:Receptors, Dopamine D2; D050637:Receptors, Dopamine D3