OXT and major depressive disorder: Among the enriched pathways are neurotransmitter associated pathways (including dopamine synapse, serotonin synapse, oxytocin, adrenergic signaling, endocannabinoid signaling and GABA/Glutaminergic signaling), memory related pathways (such as long term potentiation, long term depression, and axon guidance) as well as neurobiology pathways associated with alcohol and amphetamine addiction.