- Subjects currently being treated with an antipsychotic agent who have not had visual and/or auditory hallucinations, with or without delusions, during the four weeks prior to screening, and/or have a Hallucinations or Delusions total item score <4 on the NPI at the screening visit may be washed out (for 7 days or 5 half-lives, whichever is longer) and return for a repeat screening visit. The NPI Hallucinations or Delusions total item score must be ≥4 at the repeat visit to be considered for study entry.