Particularly, the serotonin system plays an important role in the neural processing of anxiety [34,35,36] and, among the central serotonin receptors (5-HT1-7), the 5-HT1A receptor subtype seems to play a key role in the control of anxiety by influencing serotonergic neurotransmission in multiple brain regions [30,35,36,37,41]. Here, HTR1A is linked to Anxiety.