HSPG2 and psychotic disorder: However, visual inspection of the Kaplan–Meier plot and comparison of survival probabilities indicated that patients receiving NAC (IPPI + NAC: 72.7%, PSM + NAC: 72.7%) showed lower transition rates to psychosis as compared to patients receiving PLC (IPPI + PLC: 56.1%, PSM + PLC: 39.0%).