Clozapine to reduce violence in people with schizophrenia

4/7 Clozapine for the Prevention of Violence in Schizophrenia: a Randomized Clinical Trial

NIH-funded research University of Maryland Baltimore · NIH-11134607

This trial will compare clozapine with usual antipsychotic care to see whether clozapine lowers the chance of violent acts in people with schizophrenia who are at high risk.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of Maryland Baltimore NIH-funded
Lab location1 site (Baltimore, United States)
Project IDNIH-11134607 on NIH RePORTER

What this research studies

If you join, you'll be randomly assigned to receive clozapine or your usual antipsychotic treatment for 24 weeks. The trial is open-label so your treating clinicians will know your medication, but the people who rate outcomes will be blinded. About 280 adults with schizophrenia judged to be at high risk for violence will be enrolled across seven community sites coordinated by the New York State Psychiatric Institute and led by the University of Maryland Baltimore. The study will track violent acts and safety measures, including regular blood tests required for clozapine.

Who could benefit from this research

Good fit: Adults diagnosed with schizophrenia who are considered at high risk for violent behavior and who can comply with clozapine's required blood monitoring are the best fit.

Not a fit: People without schizophrenia, those not judged to be at elevated risk for violence, or anyone with medical contraindications to clozapine (for example low white blood cell counts, inability to comply with blood monitoring, or pregnancy) are unlikely to benefit.

Why it matters

Potential benefit: If successful, this could lower violent behavior and improve safety, clinical outcomes, and stigma for people with schizophrenia.

How similar studies have performed: Smaller and mostly observational studies have suggested clozapine reduces aggression, but large randomized effectiveness trials in community outpatient settings have not previously answered this question.

Where this research is happening

Baltimore, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.