Oxytocin is a neuropeptide that regulates social bonding and improves social cognition across numerous domains.3 In healthy participants, its administration has been shown to modulate activity in an extended network of regions involved in: mentalising, such as the medial prefrontal cortex, temporoparietal junction, middle and superior temporal cortex; reward processing, such as the dorsal and ventral striatum; and emotion processing, such as the amygdala and insula.4 Oxytocin has been studied as a potential prosocial intervention in schizophrenia. This evidence concerns the gene OXT and schizophrenia.