Unlabelled: Serotonin plays a central role in mood regulation and the development of depressive disorders. The serotonin transporter, the primary regulator of serotonin levels, presents genetic variants that affect its functionality.
Aim: To study whether functional bi-allelic 5-HTTLPR or tri-allelic 5-HTTLPR/rs25531 polymorphisms in the serotonin transporter gene are associated with the diagnosis of depression.