Clinical trial Recruiting at 22 sites Phase 3 Interventional Ages 18 to 65

Testing whether stopping iloperidone long-acting injection causes symptom return in adults with schizophrenia.

Official title: A Multicenter, Double-Blind, Randomized Withdrawal Study in Patients With Schizophrenia Receiving Either Iloperidone Long-Acting Injection (LAI) or Placebo Injection

Run by Vanda Pharmaceuticals · NCT06961968 · Data updated 2026-11-12

This trial tests whether iloperidone long-acting injection prevents symptom worsening compared with placebo in adults with schizophrenia.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 65 Years
SexAll
Enrollment400 (estimated)
SponsorVanda Pharmaceuticals
Industry-sponsored
Locations22 sites (Rogers, Arkansas and 21 other locations)
StatusRecruiting
StartedMay 14, 2025
Main results expectedNovember 2027
Study endsNovember 2027
Registry record updatedJanuary 12, 2026
Trial IDNCT06961968 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18–65 with a DSM-5 diagnosis of schizophrenia who require ongoing psychiatric treatment are the intended participants.

Probably not a fit

People younger than 18 or older than 65, or those whose primary recent psychiatric diagnosis was not schizophrenia, are unlikely to benefit from this trial.

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

What this trial studies

This Phase 3 randomized withdrawal trial will compare iloperidone long-acting injection to placebo in adults with schizophrenia to see whether continued active treatment reduces symptom exacerbation. Eligible adults (18–65) with a DSM-5 diagnosis of schizophrenia who need ongoing psychiatric treatment are randomized to receive either iloperidone LAI or placebo and are followed for return or worsening of symptoms. Standard clinical and safety assessments are used during the follow-up period to detect exacerbations and adverse events. The trial is run at three Vanda investigational sites in the United States.

Why it matters

Potential benefit: If successful, continued iloperidone LAI could reduce relapse and hospitalizations by keeping symptoms stable.

How similar studies have gone: Other long-acting injectable antipsychotics have reduced relapse in randomized withdrawal trials, but published data specifically on iloperidone LAI are limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Males or females 18 to 65 years of age (inclusive)
* Diagnosed with schizophrenia per DSM-5 criteria
* In need of ongoing psychiatric treatment

Exclusion Criteria:

* DSM-5 diagnosis of a psychiatric disorder other than schizophrenia that was the primary focus of treatment within the previous six months

Where it's running

  • Vanda Investigational Site
    Rogers, Arkansas, United States
    Recruiting
  • Vanda Investigational Site
    Costa Mesa, California, United States
    Recruiting
  • Vanda Investigational Site
    Lemon Grove, California, United States
    Recruiting
  • Vanda Investigational Site
    Oceanside, California, United States
    Recruiting
  • Vanda Investigational Site
    Pico Rivera, California, United States
    Recruiting
  • Vanda Investigational Site
    San Diego, California, United States
    Recruiting
Show 16 more locations
  • Vanda Investigational Site
    Walnut Creek, California, United States
    Recruiting
  • Vanda Investigational Site
    North Miami, Florida, United States
    Recruiting
  • Vanda Investigational Site
    Atlanta, Georgia, United States
    Recruiting
  • Vanda Investigational Site
    Peachtree Corners, Georgia, United States
    Recruiting
  • Vanda Investigational Site
    Chicago, Illinois, United States
    Recruiting
  • Vanda Investigational Site
    Flowood, Mississippi, United States
    Recruiting
  • Vanda Investigational Site
    Saint Charles, Missouri, United States
    Recruiting
  • Vanda Investigational Site
    St Louis, Missouri, United States
    Recruiting
  • Vanda Investigational Site
    Las Vegas, Nevada, United States
    Recruiting
  • Vanda Investigational Site
    Marlton, New Jersey, United States
    Recruiting
  • Vanda Investigational Site
    Staten Island, New York, United States
    Recruiting
  • Vanda Investigational Site
    Austin, Texas, United States
    Recruiting
  • Vanda Investigational Site
    Houston, Texas, United States
    Recruiting
  • Vanda Investigational Site
    Irving, Texas, United States
    Recruiting
  • Vanda Investigational Site
    Richardson, Texas, United States
    Recruiting
  • Vanda Investigational Site
    Bellevue, Washington, United States
    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.