Intranasal treatment with 40 IU oxytocin was found to intensify trauma-script-induced re-experiencing symptoms in recently traumatized healthy subjects [16] but to attenuate stress reactivity, including the cortisol response, in patients with borderline personality disorder [17], a psychiatric disease known to have a high comorbidity and symptom overlap with PTSD [18]. The gene discussed is OXT; the disease is psychiatric disorder.