Non-replication of the brain-derived neurotrophic factor (BDNF) association in bipolar affective disorder: a Belgian patient-control study.
This patient-control association study was conducted to investigate a possible association of two single nucleotide polymorphisms (SNPs), g.11757C > G and g.196G > A, in the brain-derived neurotrophic factor (BDNF) with bipolar affective disorder (BPAD). Two hundred seventy-five individuals of Belgian origin (at least two generations of Belgian ancestors) were genotyped (112 BPAD and 163 controls). No significant differences were found in the frequency of genotypes and alleles of g.196G > A (P = 0.37 and 0.94, respectively) and g.11757C > G (P = 0.49 and 0.59, respectively) between controls and BPAD patients. An haplotype analysis revealed no difference between patients and controls (P = 0.44). We failed to replicate previous findings implicating BDNF in the aetiology of BPAD. However, BDNF remains an interesting target for future genetic studies and should be tested in prospective pharmacogenetic therapeutic trials.
Department of Psychiatry, University Clinics of Brussels, Erasme Hospital, Free University of Brussels, Brussels, Belgium. poswald@ulb.ac.be
Pierre
P
Oswald
Jurgen
J
Del-Favero
Isabelle
I
Massat
Daniel
D
Souery
Stephan
S
Claes
Christine
C
Van Broeckhoven
Julien
J
Mendlewicz
D000328:Adult; D000368:Aged; D000483:Alleles; D001530:Belgium; D001714:Bipolar Disorder / Q000235:genetics*; D019208:Brain-Derived Neurotrophic Factor / Q000235:genetics*; D016022:Case-Control Studies; D004247:DNA / Q000737:chemistry / Q000235:genetics / Q000302:isolation & purification; D004252:DNA Mutational Analysis; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D015810:Linkage Disequilibrium; D008297:Male; D008875:Middle Aged; D017354:Point Mutation; D020641:Polymorphism, Single Nucleotide
D019208:Brain-Derived Neurotrophic Factor; D004247:DNA