Association study of 5'-UTR polymorphisms of the human dopamine transporter gene with manic depression.
OBJECTIVE
To determine the degree of association of five single nucleotide polymorphisms at the 5'-untranslated region (5'-UTR) of the human dopamine transporter gene (hSLC6A3; hDAT1) in bipolar affective disorder.


METHODS
In a case-control design study, the polymorphisms were genotyped for allelic and genotypic distribution between 105 index cases (50 males) with bipolar affective disorder according to DSM IV and 199 unaffected control subjects (120 males).


RESULTS
At the 5'-UTR locus of hSLC6A3, no significant allelic or genotypic differences were observed between index cases and controls. However, distinct 5-locus genotypes accumulated in subjects with bipolar affective disorder compared to control subjects (p = 0.029, odds ratio 1.84, 95% confidence interval 1.12-3.02).


CONCLUSIONS
In conclusion, our data do not provide evidence for a major role of the 5'-UTR of the dopamine transporter gene in bipolar affective disorder. A minor contribution of distinct genotypes may be possible and warrants replication in extended samples.
Stöber
Gerald
G
Department of Psychiatry and Psychotherapy, University of Würzburg, Würzburg, Germany. stoeber_g@klinik.uni-wuerzburg.de
Sprandel
Julia
J
Schmidt
Florian
F
Faul
Thomas
T
Jabs
Burkhard
B
Knapp
Michael
M
D020121:5' Untranslated Regions / Q000235:genetics*; D000328:Adult; D000483:Alleles; D001714:Bipolar Disorder / Q000175:diagnosis / Q000235:genetics* / Q000523:psychology; D016022:Case-Control Studies; D002874:Chromosome Mapping; D050483:Dopamine Plasma Membrane Transport Proteins / Q000235:genetics*; D005260:Female; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D012150:Polymorphism, Restriction Fragment Length; D011401:Promoter Regions, Genetic
D020121:5' Untranslated Regions; D050483:Dopamine Plasma Membrane Transport Proteins; C493214:SLC6A3 protein, human