Study of ITI-1284 as an Adjunctive Treatment in Patients With Generalized Anxiety Disorder

NCT ID: NCT06480383

Last Updated: 2026-01-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

705 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-08-05

Study Completion Date

2027-06-30

Brief Summary

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This is a multicenter, randomized, double-blind, placebo-controlled study evaluating the efficacy, safety, and tolerability of ITI-1284 compared with placebo as adjunctive therapy to GAD treatment in patients meeting Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) criteria for GAD who have an inadequate response to ongoing GAD treatment.

Detailed Description

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The study will be conducted in 3 periods:

* Screening Period (up to 3 weeks) during which patient eligibility will be assessed and the washout of prohibited medications will occur.
* Double-blind Treatment Period (6 weeks) during which patients will be randomized in a 1:1:1 ratio to receive one of the 3 treatments (ITI-1284 10 mg, ITI-1284 20 mg, or placebo).
* Safety Follow-up Period (1 week) during which all patients will return for a safety follow-up visit.

Conditions

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Generalized Anxiety Disorder

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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ITI-1284 10mg

Group Type EXPERIMENTAL

ITI-1284 10 mg

Intervention Type DRUG

ITI-1284 10 mg tablet, taken once daily, sublingual administration.

ITI-1284 20mg

Group Type EXPERIMENTAL

ITI-1284 20 mg

Intervention Type DRUG

ITI-1284 20 mg tablet, taken once daily, sublingual administration.

Placebo

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Matching placebo tablet, taken once daily, sublingual administration

Interventions

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ITI-1284 10 mg

ITI-1284 10 mg tablet, taken once daily, sublingual administration.

Intervention Type DRUG

ITI-1284 20 mg

ITI-1284 20 mg tablet, taken once daily, sublingual administration.

Intervention Type DRUG

Placebo

Matching placebo tablet, taken once daily, sublingual administration

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Provide written informed consent before the initiation of any study specific procedures;
2. Male or female patients ≥ 18 years of age;
3. At Screening, meet Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) diagnostic criteria for moderate or severe GAD as confirmed by the Investigator or Sponsor-approved rater using the Structured Clinical Interview for DSM-5 Clinical Trials Version (SCID-5-CT), and meets all of the following at Screening and Baseline:

1. HAM-A Total score of ≥ 22;
2. HAM-A Items 1 (anxious mood) and 2 (tension) scores ≥ 2;
3. CGI-S score of ≥ 4;
4. History of inadequate response (\< 50% improvement in anxiety symptoms as measured by the modified Antidepressant Treatment Response Questionnaire \[ATRQ\] for GAD) to at least 1 GAD-approved treatment (ie, one of the following GAD-approved treatments: paroxetine, venlafaxine XR, duloxetine, escitalopram, or buspirone) taken at an adequate dose (at least the minimum GAD-approved dose per package insert) and duration (ie, daily for at least 6 weeks) for the treatment of ongoing GAD symptoms;
5. Currently having an inadequate response to one of the following GAD-approved treatments: paroxetine, venlafaxine XR, duloxetine, escitalopram, or buspirone taken at an adequate dose (at least the minimum GAD-approved dose per package insert) and duration (ie, for at least 6 weeks prior to Screening) and agrees to continue the same dosing regimen for the duration of the study.

NOTE: The current GAD-approved treatment must be different from the GAD treatment identified as the historical failure.

Exclusion Criteria

1. Within the patient's lifetime, has one of the following confirmed DSM-5-TR psychiatric diagnoses:

1. Schizophrenia, Schizoaffective Disorder, Schizophreniform Disorder or other psychotic disorder;
2. Bipolar Disorder;
2. MADRS total score \> 18 at Screening or Baseline;
3. In the opinion of the Investigator, the patient has a significant risk for suicidal behavior during his/her participation in the study or

1. At Screening, the patient scores "yes" on Suicidal Ideation Items 4 or 5 of the C-SSRS within 6 months prior to Screening or, at Baseline, the patient scores "yes" on Suicidal Ideation Items 4 or 5 since the Screening Visit;
2. At Screening, the patient has had 1 or more suicidal attempts within the 2 years prior to Screening;
3. At Screening or Baseline MADRS Item 10 score ≥ 5; or
4. The patient is considered to be an imminent danger to him/herself or others based on the assessment of the Investigator.
4. Lifetime history of failure to respond to \> 3 of the approved treatments for GAD (ie, paroxetine, venlafaxine XR, duloxetine, escitalopram, or buspirone) at an adequate dose (ie, at least the minimum dose approved for GAD per package insert) and for an adequate duration (ie, at least 6 weeks).
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Intra-Cellular Therapies, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Clinical Site

Chandler, Arizona, United States

Site Status ACTIVE_NOT_RECRUITING

Clinical Site

Encino, California, United States

Site Status RECRUITING

Clinical Site

Glendale, California, United States

Site Status RECRUITING

Clinical Site

Imperial, California, United States

Site Status RECRUITING

Clinical Site

Lemon Grove, California, United States

Site Status RECRUITING

Clinical Site

Oceanside, California, United States

Site Status RECRUITING

Clinical Site

Orange, California, United States

Site Status RECRUITING

Clinical Site

Redlands, California, United States

Site Status RECRUITING

Clinical Site

San Diego, California, United States

Site Status ACTIVE_NOT_RECRUITING

Clinical Site

Farmington, Connecticut, United States

Site Status RECRUITING

Clinical Site

Gainesville, Florida, United States

Site Status WITHDRAWN

Clinical Site

Lauderhill, Florida, United States

Site Status RECRUITING

Clinical Site

Maitland, Florida, United States

Site Status RECRUITING

Clinical Site

Miami, Florida, United States

Site Status RECRUITING

Clinical Site

Miami, Florida, United States

Site Status RECRUITING

Clinical Site

Miami, Florida, United States

Site Status RECRUITING

Clinical Site

Miami Springs, Florida, United States

Site Status RECRUITING

Clinical Site

Orlando, Florida, United States

Site Status ACTIVE_NOT_RECRUITING

Clinical Site

Tampa, Florida, United States

Site Status RECRUITING

Clinical Site

Atlanta, Georgia, United States

Site Status RECRUITING

Clinical Site

Decatur, Georgia, United States

Site Status RECRUITING

Clinical Site

Boston, Massachusetts, United States

Site Status ACTIVE_NOT_RECRUITING

Clinical Site

Ann Arbor, Michigan, United States

Site Status RECRUITING

Clinical Site

Toms River, New Jersey, United States

Site Status RECRUITING

Clinical Site

Brooklyn, New York, United States

Site Status RECRUITING

Clinical Site

North Canton, Ohio, United States

Site Status RECRUITING

Clinical Site

Oklahoma City, Oklahoma, United States

Site Status RECRUITING

Clinical Site

Allentown, Pennsylvania, United States

Site Status RECRUITING

Clinical Site

Media, Pennsylvania, United States

Site Status RECRUITING

Clinical Site

Austin, Texas, United States

Site Status RECRUITING

Clinical Site

Austin, Texas, United States

Site Status RECRUITING

Clinical SIte

DeSoto, Texas, United States

Site Status ACTIVE_NOT_RECRUITING

Clinical Site

Plano, Texas, United States

Site Status RECRUITING

Clinical Site

Bellevue, Washington, United States

Site Status RECRUITING

Clinical Site

Blagoevgrad, , Bulgaria

Site Status RECRUITING

Clinical Site

Burgas, , Bulgaria

Site Status RECRUITING

Clinical Site

Pleven, , Bulgaria

Site Status RECRUITING

Clinical Site

Plovdiv, , Bulgaria

Site Status RECRUITING

Clinical Site

Rousse, , Bulgaria

Site Status RECRUITING

Clinical Site

Sofia, , Bulgaria

Site Status RECRUITING

Clinical Site

Sofia, , Bulgaria

Site Status RECRUITING

Clinical Site

Sofia, , Bulgaria

Site Status RECRUITING

Clinical Site

Sofia, , Bulgaria

Site Status RECRUITING

Clinical Site

Targovishte, , Bulgaria

Site Status RECRUITING

Clinical Site

Varna, , Bulgaria

Site Status RECRUITING

Clinical Site

Varna, , Bulgaria

Site Status RECRUITING

Clinical Site

Vratsa, , Bulgaria

Site Status RECRUITING

Clinical Site

Brno, , Czechia

Site Status RECRUITING

Clinical Site

Pilsen, , Czechia

Site Status RECRUITING

Clinical Site

Prague, , Czechia

Site Status RECRUITING

Clinical Site

Prague, , Czechia

Site Status RECRUITING

Clinical Site

Prague, , Czechia

Site Status RECRUITING

Clinical Site

Helsinki, , Finland

Site Status NOT_YET_RECRUITING

Clinical Site

Kuopio, , Finland

Site Status NOT_YET_RECRUITING

Clinical Site

Oulu, , Finland

Site Status NOT_YET_RECRUITING

Clinical Site

Tampere, , Finland

Site Status NOT_YET_RECRUITING

Clinical Site

Bialystok, , Poland

Site Status RECRUITING

Clinical Site

Bydgoszcz, , Poland

Site Status RECRUITING

Clinical Site

Gorlice, , Poland

Site Status RECRUITING

Clinical Site

Leszno, , Poland

Site Status RECRUITING

Clinical Site

Poznan, , Poland

Site Status NOT_YET_RECRUITING

Clinical Site

Torun, , Poland

Site Status RECRUITING

Clinical Site 2

Belgrade, , Serbia

Site Status RECRUITING

Clinical Site 3

Belgrade, , Serbia

Site Status RECRUITING

Clinical Site 4

Belgrade, , Serbia

Site Status RECRUITING

Clinical Site

Belgrade, , Serbia

Site Status RECRUITING

Clinical Site

Kovin, , Serbia

Site Status RECRUITING

Clinical Site

Kragujevac, , Serbia

Site Status RECRUITING

Clinical Site

Novi Kneževac, , Serbia

Site Status RECRUITING

Countries

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United States Bulgaria Czechia Finland Poland Serbia

Central Contacts

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ITI Clinical Trials

Role: CONTACT

6464409333

Other Identifiers

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ITI-1284-301

Identifier Type: -

Identifier Source: org_study_id

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