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Iloperidone

Phase 3

Schizophrenia | Small molecule | Psychiatry |Vanda Pharmaceuticals Inc.|Last Updated: Jan 12, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials4
Total Enrollment1,670
FDA Designations
No designations recorded
Clinical Trials (4)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06961968Randomized Withdrawal Study in Patients With SchizophreniaPHASE3 RECRUITING 400May 14, 2025Nov 1, 2027Jan 12, 202622 United States
NCT01291511Relapse Prevention Study in Patients With SchizophreniaPHASE3 COMPLETED 635Feb 1, 2011Mar 1, 2015Jul 17, 202363 United States, India +1
NCT00254202Efficacy and Safety of Iloperidone Compared With Placebo and Active Control in Subjects With Acute SchizophreniaPHASE3 COMPLETED 593Nov 18, 2005Mar 21, 2007Dec 13, 202442 United States, India
NCT04712734A Study to Evaluate Iloperidone Long-acting Injection (LAI) for the Treatment of SchizophreniaPHASE1 COMPLETED 42Jan 13, 2021Aug 30, 2022Jun 29, 20233 United States
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Study Endpoints
Primary Endpoints
Time to exacerbation of symptoms
Up to 52 weeks post-randomization

As measured by the time to first exacerbation of psychiatric symptoms

Time to Relapse or Impending Relapse
Up to 26 weeks post-randomization

Relapse or impending relapse was defined as any of the following: hospitalization due to worsening of schizophrenia; increase (worsening) of the PANSS total score of greater than or equal to 30% from randomization, PANSS total score confirmed at a second visit conducted within 1-7 days; clinically significant emergent or worsening suicidal, homicidal, or aggressive behavior; a CGI-Improvement (CGI-I) score of 6 (much worse) or 7 (very much worse) after randomization; a dose increase in study medication or a need for additional open-label antipsychotic treatment.

Change From Baseline in Positive and Negative Symptom Scale Total (PANSS-T) Score
4 weeks

The PANSS is a 30-item scale developed to assess the severity of symptoms of schizophrenia. The PANSS items are divided into positive, negative, and general psychopathology factors. Items are rated on a scale of 1 (absent) to 7 (extremely severe). The PANSS-T score is the sum of scores for all 30 PANSS items (i.e., the sum of the three subscales), with a minimum score of 30 and a maximum score of 210. Higher scores indicate more severe symptoms. A negative change from baseline indicates improvement.

Pharmacokinetics of iloperidone and its metabolites following repeat-dosing of iloperidone given as a long-acting injection.
24 weeks

As measured by plasma concentrations.

Assessment of safety and tolerability of repeat-dosing of iloperidone given as a long-acting injection.
24 weeks

As measured by spontaneous reporting of adverse events (AEs).

Secondary Endpoints
PANSS Total Score, Change From Baseline to Last Visit
Up to 26 weeks post-randomization
CGI-S, Last Visit
Up to 26 weeks post-randomization
SDS Total Score, Change From Baseline to Last Visit
Up to 26 weeks post-randomization
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
iloperidoneEXPERIMENTALDuring the 12-week stabilization phase, all patients will receive open-label iloperidone administered as oral tablets (weeks 1-6) and as long-acting intramuscular injections (weeks 7-12). Subsequently, patients will be randomized in a 1:1 ratio to one of two arms: iloperidone long-acting injection or matching placebo. Post-randomization this arm will receive double-blind study drug (iloperidone long-acting injection) as long-acting intramuscular injections for up to 52 weeks.
placeboPLACEBO_COMPARATORDuring the 12-week stabilization phase, all patients will receive open-label iloperidone administered as oral tablets (weeks 1-6) and as long-acting intramuscular injections (weeks 7-12). Subsequently, patients will be randomized in a 1:1 ratio to one of two arms: iloperidone long-acting injection or matching placebo. Post-randomization this arm will receive double-blind study drug (matching placebo) as long-acting intramuscular injections for up to 52 weeks.
ZiprasidoneACTIVE_COMPARATOROral ziprasidone
Interventions
NameTypeDescription
iloperidoneDRUGiloperidone LAI
placeboDRUGmatching placebo
ZiprasidoneDRUG -
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersNo
Study Sites22

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 wi...

Countries:United StatesIndiaUkraine
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06961968primaryCompletionDate: changed
LOWMay 24, 2026NCT06961968studyFirstPostDate: changed