Analysis of SNP profiles in patients with major depressive disorder.
The present study focused on 91 single-nucleotide polymorphisms (SNPs) in 21 candidate genes to find associations with major depressive disorder (MDD). In total, 160 healthy controls and 177 patients with MDD were studied. We applied arrayed primer extension (APEX) based genotyping technology followed by association and haplotype analysis. SNPs in CCKAR, DRD1, DRD2, and HTR2C genes showed nominally significant associations with MDD. None of these associations remained significant after adjustment for multiple testing. Haplotype analysis revealed CCKAR haplotypes to be associated with MDD (global p=0.004). More precisely, we found the GAGT haplotype to be associated with increased risk for MDD (OR 7.42, 95% CI 2.13-25.85, p=0.002). This haplotype effect remained significant after Bonferroni correction (p=0.04 after Bonferroni's adjustment). Altogether we were able to find some nominal associations, but due to small sample size these results should be taken as exploratory. However, the effect of GAGT haplotype on the CCKAR gene may be considered as increasing the risk for MDD.
Kõks
Sulev
S
Department of Physiology, University of Tartu, Tartu, EstoniaVisgenyx Ltd, Tartu, Estonia. Sulev.Koks@ut.ee
Nikopensius
Tiit
T
Koido
Kati
K
Maron
Eduard
E
Altmäe
Signe
S
Heinaste
Evelin
E
Vabrit
Kristel
K
Tammekivi
Veronika
V
Hallast
Pille
P
Kurg
Ants
A
Shlik
Jakov
J
Vasar
Veiko
V
Metspalu
Andres
A
Vasar
Eero
E
D000293:Adolescent; D000328:Adult; D000368:Aged; D000483:Alleles; D016022:Case-Control Studies; D016001:Confidence Intervals; D003865:Major Depressive Disorder / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D043886:Receptor, Cholecystokinin A / Q000235:genetics
D043886:Receptor, Cholecystokinin A