The association between the dopamine D4 receptor (D4DR) 16 amino acid repeat polymorphism and novelty seeking - PubMed (original) (raw)
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- PMID: 9154232
The association between the dopamine D4 receptor (D4DR) 16 amino acid repeat polymorphism and novelty seeking
A K Malhotra et al. Mol Psychiatry. 1996 Nov.
Abstract
Ebstein and colleagues have recently reported a significant association between the 7-repeat allele of the dopamine D4 receptor (D4DR) 16 amino acid repeat polymorphism and the personality trait of Novelty Seeking (NS) in 124 Israeli subjects. This study, and another study conducted in the US (although with a different personality measure) that observed a similar association, have generated wide interest in the identification of the genes involved in personality variation. We have determined D4DR genotypes in two groups of Finnish subjects; 193 psychiatrically screened normal controls and 138 alcoholic offenders and assessed NS with the Tridimensional Personality Questionnaire (TPQ). In normals, we find no significant association between NS and the 7-repeat allele despite similar allele frequencies and the use of the same personality measure as Ebstein et al. The group of alcoholic offenders have significantly higher NS than normals, however we fail to replicate the previous association in this group and, in fact, find a significant association in the opposite direction as previously observed. These data suggest that D4DR may require re-evaluation as a candidate gene for personality variation.
Comment in
- No association of the -521 C/T polymorphism in the promoter of DRD4 with novelty seeking.
Ekelund J, Suhonen J, Järvelin MR, Peltonen L, Lichtermann D. Ekelund J, et al. Mol Psychiatry. 2001 Nov;6(6):618-9. doi: 10.1038/sj.mp.4000943. Mol Psychiatry. 2001. PMID: 11673788 No abstract available.
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