A clinical study with divergent single-dose oxytocin administration in patients with schizophrenia showed that 20 IU oxytocin, but not 10 IU oxytocin, ameliorated emotion recognition deficits in a polydipsic group.18 However, as the effect of oxytocin administration differs between schizophrenia and ASD,19 dose dependency of oxytocin administration in individuals with ASD requires investigation. The gene discussed is OXT; the disease is schizophrenia.