NCIt definition : Human SLC6A4 wild-type allele is located in the vicinity of 17q11.2 and is approximately
42 kb in length. This allele, which encodes sodium-dependent serotonin transporter
protein, plays a role in serotonin uptake. Polymorphism in the promoter region affects
gene expression and lower gene expression is associated with depression. Coding region
variations are associated with genetic susceptibility to both obsessive-compulsive
disorder and alcoholism.;