Lack of association between dopamine transporter gene polymorphisms and delusional disorder

Potential contributions of dopamine transporter (DAT) gene variants to delusional disorder were investigated using association analysis. DAT gene VNTR polymorphisms were assessed in 61 delusional patients and 54 normal controls. No differences were found in either genotypic or allelic distributions. These findings do not support relevant contributions of DAT gene variants to the pathogenesis of delusional disorder.