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NCT05208190RecruitingPhase 4

Clozapine for the Prevention of Violence in Schizophrenia: a Randomized Clinical Trial

Source: ClinicalTrials.gov · Last updated 4 May 2026

Brief summary (registry, in English)

Two-hundred and eighty individuals with schizophrenia who have a recent history of violent acts will be randomized in this 2-arm, parallel-group, 24-week, open-label, 7-site clinical trial to examine the effects of treatment with clozapine vs antipsychotic treatment as usual (TAU) for reducing the risk of violent acts in real-world settings

Status (registry)
Recruiting
Phase (registry)
Phase 4
Study type
Interventional
Enrollment
280 (estimated)
First submitted
12 Jan 2022
Start date
17 Mar 2022
Primary completion date
30 Jun 2028
Lead sponsor
New York State Psychiatric Institute
NCT number
NCT05208190

What you commit to

  • Study type: Interventional · Phase 4
  • Planned participants: 280
  • From 17 Mar 2022 to the primary completion date, 30 Jun 2028
  • 7 sites in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Individuals who score a 3, 4, or 5 within the previous month on the suicidal ideation section of the Columbia Suicide Severity Rating Scale (CSSRS), have any suicidal behavior (not including Not Suicidal Self Injury) within the previous 3 months, or are, in the opinion of the investigator, at too high of a risk for suicide to be safety treated in a randomized trial in which they may not be treated with clozapine

Other illness

  • An unstable of serious medical or neurological condition including a myeloproliferative disorder or condition that surprises the bone marrow
  • A history of intolerance/allergy to clozapine (e.g., agranulocytosis, small bowel obstruction, or myocarditis)
  • A history of intellectual impairment

Other

  • pregnant or lactating women; women who are able to become pregnant but who are not willing to sue effective methods of birth control
  • Documented intolerance to or lack of any therapeutic benefit with clozapine after a full trial

Who the study is looking for

  • Diagnostic and Statistical Manual-5 (DSM-5) diagnosis of schizophrenia or schizoaffective disorder by the Structured Clinical Interview for DSM-5 (SCID-5)
  • commission of a minor or serious act of violence as measured by the MCVI in the last six months
  • willing and able to provide informed consent
  • medically stable in judgment of physician providing study treatment
  • appropriate for treatment with either clozapine or TAU, i.e., that there is clinical equipoise between the two treatment options. Individuals who are currently medication free or on any antipsychotic, with the exception of clozapine or long-acting injectable medication with a dosing interval of more than 30 days will be eligible

Age in the registry: 18 years to 65 years · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (7)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Augusta University Research Institute, Inc.
Coordinator of this site? Confirm its status
AugustaUnited StatesRecruiting
University of Maryland School of Medicine
Coordinator of this site? Confirm its status
BaltimoreUnited StatesRecruiting
University of North Carolina at Chapel Hill
Coordinator of this site? Confirm its status
Chapel HillUnited StatesRecruiting
University of California, Los Angeles
Coordinator of this site? Confirm its status
Los AngelesUnited StatesRecruiting
Manhattan Psychiatric Center
Coordinator of this site? Confirm its status
New YorkUnited StatesRecruiting
NYU Langone Medical Center
Coordinator of this site? Confirm its status
New YorkUnited StatesRecruiting
New York State Psychiatric Institute
Coordinator of this site? Confirm its status
New YorkUnited StatesRecruiting

This page is information, not medical advice. Discuss any trial with your doctor.