Human Genetics

, Volume 120, Issue 4, pp 447–459 | Cite as

The association of DNA sequence variation at the MAOA genetic locus with quantitative behavioural traits in normal males

  • Shai RosenbergEmail author
  • Alan R. Templeton
  • Paul D. Feigin
  • Doron Lancet
  • Jacques S. Beckmann
  • Sara Selig
  • Dean H. Hamer
  • Karl SkoreckiEmail author
Original Investigation


Monoamine oxidase A (MAOA) catalyses the oxidative deamination of biogenic amines including neurotransmitters, mainly norepinephrine and serotonin in the brain and peripheral tissues. A nonsense mutation in the gene was shown to be involved in a rare X-linked behavioural syndrome, which includes impaired impulse control, aggression and borderline mental retardation (Brunner syndrome). Several recent studies have shown the association of genetic variation of a VNTR in the gene promoter with various pathological behavioural traits. In the present study the association of MAOA genetic variation with a large set of quantitative behavioural traits in normal individuals has been examined. DNA samples from 421 unrelated males were genotyped for 14 SNPs and for the promoter VNTR at the MAOA locus. An additional 16 SNPs were genotyped at apparently neutral loci across the X chromosome to serve as a genomic control for possible false positive associations due to population structure. Behavioural traits were measured using the NEO psychometric questionnaire, which is based on a 5-axis model of personality, and consists of 30 different quantitative traits. There was a robust association of the A2 (“straightforwardness”) facet with common allelic variants at the promoter VNTR. Most of the tested traits were not associated with the VNTR despite reasonable power, thus demonstrating that the VNTR influence on quantitative behavioural traits in normal males may be very specific. In contrast, several traits of the C (“conscientiousness”) axis were associated with less common SNP-defined haplotypes. Hence, it appears that common genetic variation at the VNTR contributes to the behavioural attribute of “straightforwardness”, while rare haplotypes defined by SNPs downstream of the transcription start site may contribute to “conscientiousness”. This study is used to address the validation, interpretation and limitation of genetic association studies of quantitative behavioural traits.


Monoamine oxidase A (MAOA) Behavioural traits Quantitative trait loci Genetic association Population structure 



We would like to thank Edna Ben-Asher and Nili Avidan for lab work assistance and useful discussions. We would like to thank Mike Weale and Katheryn Roeder for useful discussions about Genomic Control. This study was supported by the Israel Academy of Science—FIRST award.

Supplementary material

439_2006_198_MOESM1_ESM.pdf (22 kb)
Supplementary material


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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Shai Rosenberg
    • 1
    Email author
  • Alan R. Templeton
    • 2
  • Paul D. Feigin
    • 3
  • Doron Lancet
    • 4
  • Jacques S. Beckmann
    • 5
    • 6
  • Sara Selig
    • 1
    • 8
  • Dean H. Hamer
    • 7
  • Karl Skorecki
    • 1
    • 8
    Email author
  1. 1.Rappaport Faculty of Medicine and Research InstituteTechnion–Israel Institute of TechnologyHaifaIsrael
  2. 2.Department of BiologyWashington UniversitySt. LouisUSA
  3. 3.William Davidson Faculty of Industrial Engineering and ManagementTechnion–Israel Institute of TechnologyHaifaIsrael
  4. 4.Department of Molecular Genetics and the Crown Human Genome CenterThe Weizmann Institute of ScienceRehovotIsrael
  5. 5.Department of Medical GeneticsUniversity of LausanneLausanneSwitzerland
  6. 6.Dépt de Génétique MédicaleCentre Hospitalier Universitaire VaudoisLausanneSwitzerland
  7. 7.Laboratory of Biochemistry NCI, NIHBethesdaUSA
  8. 8.Department of Nephrology and Molecular MedicineRambam Medical CenterHaifaIsrael

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