Polymorphisms of Dopamine Transporter SLC6A3 (DAT1 VNTR) Gene and its association with dopamine serum level among Iraqi patients with Major Depressive Disorder

The Aim: Depressive mood or irritability, reduced or loss of pleasure or interest for at least 2 weeks,impaired cognitive function, and vegetative symptoms such as disturbed sleep or appetite describe major depressive disorder or episode MDD or (MDE). The aim was investigating the potential association between the human dopamine transporter (DAT1 VNTR) gene polymorphisms with major depressive disorder and their correlation with dopamine neurotransmitter of Iraqi with major depressive episode (MDE).