Clinical trial Recruiting at 6 sites Phase 2 Interventional Ages 18 to 55

NBI-1117570 for adults hospitalized with schizophrenia

Official title: A Phase 2a, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Assess the Efficacy, Safety, Tolerability, and Pharmacokinetics of NBI-1117570 in Adults With Schizophrenia Who Warrant Inpatient Hospitalization

Run by Neurocrine Biosciences · NCT07288333 · Data updated 2026-11-12

This study will see if NBI-1117570 helps reduce behavioral and psychological symptoms in adults with schizophrenia who need hospitalization, compared with a placebo.

More Schizophrenia trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years to 55 Years
SexAll
Enrollment120 (estimated)
SponsorNeurocrine Biosciences
Industry-sponsored
Locations6 sites (Kazanlak and 5 other locations)
StatusRecruiting
StartedFebruary 16, 2026
Main results expectedAugust 2027
Study endsAugust 2027
Registry record updatedJuly 22, 2026
Trial IDNCT07288333 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–55 with a diagnosis of schizophrenia for at least one year who are experiencing an acute relapse requiring hospitalization and who previously responded to at least one antipsychotic (not clozapine) are the intended participants.

Probably not a fit

Patients who are pregnant or breastfeeding, have a history of seizures, significant cardiovascular disease, are at imminent risk of self-harm or harm to others, or who are taking prohibited medications would be excluded and unlikely to benefit from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a Phase 2, randomized, placebo-controlled interventional trial testing NBI-1117570 in adults aged 18–55 who are hospitalized for an acute exacerbation of schizophrenia. Eligible participants must have a primary diagnosis of schizophrenia for at least one year and a prior positive response to at least one antipsychotic (other than clozapine); major exclusions include imminent suicide risk, history of seizures, significant cardiovascular disease, pregnancy or breastfeeding, and use of prohibited medications. The investigational drug is compared with placebo during the inpatient stay, with efficacy measured by improvements in behavioral and psychological symptoms. The trial is sponsored by Neurocrine Biosciences and is being run at Neurocrine clinical sites in London and Oxford, UK.

Why it matters

Potential benefit: If successful, NBI-1117570 could reduce behavioral and psychological symptoms during acute hospitalizations and potentially shorten inpatient stays or improve recovery.

How similar studies have gone: Other antipsychotic and adjunctive agents have shown benefit in acute schizophrenia, but NBI-1117570 appears to be a novel compound with limited published efficacy data to date.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

* 18 to 55 years of age
* Primary diagnosis of schizophrenia ≥1 year before screening.
* Participant is experiencing an acute exacerbation or relapse of symptoms with onset less than 2 months before screening and currently requires hospitalization.
* Participant must have had a positive response to at least 1 antipsychotic therapy (other than clozapine) for the treatment of a prior acute relapse.

Key Exclusion Criteria:

* Considered to be at imminent risk of suicide or injury to self or others.
* History of epilepsy, seizures, or convulsions.
* Has orthostatic hypotension, or history of pulmonary hypertension, obstructive coronary artery disease, hypertrophic cardiomyopathy, myocardial infarction, coronary artery revascularization, heart failure, left ventricular hypertrophy, moderate or severe cardiac valvopathy, or other cardiovascular conditions or measures that would preclude participation.
* Currently taking prohibited medications.
* Pregnant or lactating.

Note: Additional inclusion/exclusion criteria may apply, per protocol.

Where it's running

  • Neurocrine Clinical Site
    Kazanlak, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Pazardzhik, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Targovishte, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Târgu Mureş, Romania
    Recruiting
  • Neurocrine Clinical Site
    London, United Kingdom
    Recruiting
  • Neurocrine Clinical Site
    Oxford, United Kingdom
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.