Polymorphisms in SLC6A4, PAH, GABRB3, and MAOB and modification of psychotic disorder features
Sarah E Bergen1, Ayman H Fanous, Dermot Walsh
1Virginia Commonwealth University, Department of Human and Molecular Genetics, Richmond, Virginia 23219, USA. sbergen@gmail.com
Abstract:
We tested four genes [phenylalanine hydroxylase (PAH), the serotonin transporter (SLC6A4), monoamine oxidase B (MAOB), and the gamma-aminobutyric acid A receptor beta-3 subunit (GABRB3)] for their impact on five schizophrenia symptom factors: delusions, hallucinations, mania, depression, and negative symptoms. In a 90 family subset of the Irish Study of High Density Schizophrenia Families, the PAH 232 bp microsatellite allele demonstrated significant association with the delusions factor using both QTDT (F=8.0, p=.031) and QPDTPHASE (chi-square=12.54, p=.028). Also, a significant association between the GABRB3 191 bp allele and the hallucinations factor was detected using QPDTPHASE (chi-square=15.51, p=.030), but not QTDT (chi-square=2.07, p=.560).
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