Phase 4 Schizophrenia Trial, Recruiting
Who may be able to join
AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI
Who might be able to join this trial:
- People aged 18 to 70 years old, whether currently in hospital or being treated as an outpatient.
- People who are willing and able to sign a consent form before any part of the study begins (a legal guardian may co-sign if needed).
- Women who could become pregnant must use effective contraception throughout the trial and must have a negative pregnancy test before being enrolled.
- People who have a confirmed diagnosis of schizophrenia, schizoaffective disorder, or schizophreniform disorder, based on recognised diagnostic standards (DSM-5), confirmed by a structured interview.
- People whose current psychiatric medication has not been working well enough — confirmed by a clinician's rating — and where that medication was taken for at least 4 weeks at an appropriate dose (other treatment lines are also accepted).
- People whose treating doctor agrees that a change in psychiatric medication is needed.
- People with at least a moderate level of symptoms, measured by specific psychiatric rating scales, and who are experiencing difficulties with daily functioning.
Who may not be able to join:
- People who are currently pregnant or breastfeeding.
- People who have previously used the medication clozapine.
- People who have a known intolerance to clozapine and also to all other standard medication options being considered in the trial.
- People who have medical reasons that rule out the use of clozapine and also all other standard medication options in the trial.
- People who have taken part in another clinical trial involving an experimental drug or treatment within the 30 days before the first visit.
- People who have another significant illness or condition that, in the investigator's opinion, could put them at risk or affect their ability to take part in the trial.
- People who are experiencing active thoughts of suicide with some intention to act on them, where a treating clinician determines it would not be safe for that person to participate.
- People who currently meet the criteria for a significant substance use disorder — severe alcohol or cannabis use disorder is not permitted, though nicotine dependence and mild-to-moderate alcohol or cannabis use disorder are allowed (confirm with trial site).
- People who have been placed in a psychiatric or medical institution by a court or government authority.
- People whose symptoms are already considered to be in remission, based on a specific set of clinical criteria.
- People who have significant abnormal results on blood tests (particularly white blood cell counts or liver function), heart trace (ECG), or physical examination.
- People who have a close dependent relationship with the trial sponsor, investigator, or trial site.
Important: Always verify eligibility with the trial site directly before applying.
Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.
Contact this trial
Phone: +31875553227
Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.
GP referral letter
Print a one-page summary to share with your doctor.
Trial details
Where this trial is recruiting
Primary endpoints
Change in symptom severity on Positive and Negative Syndrome Scale
Can't join this trial?
Data last synced from ClinicalTrials.gov: 19 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.