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Brain study seeks to unlock how therapy reshapes delusional thinking

NCT ID NCT06835556

Knowledge-focused Sponsor: Vanderbilt University Medical Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how people with schizophrenia-spectrum disorders update their beliefs after treatment for persecutory delusions. Researchers will use therapy, brain scans, and learning tasks to see if treatment changes how the brain responds to uncertainty. The goal is to better understand the thinking patterns behind delusions, not to test a new cure.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 120 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2025

Expected to finish

Feb 2030

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Men and women age 18 - 65. * Communicative in English. * Premorbid IQ \>79 (WTAR) * Provide voluntary, written informed consent. * Stable medication regimen over at least the past two weeks, including the use of either an oral or intramuscular administration of an antipsychotic medication. * Diagnosis of a non-affective psychotic disorder (e.g. schizophrenia, schizoaffective disorder, schizophreniform disorder, delusional disorder) * A persecutory delusion scoring at least a 3 on the conviction scale of the Psychotic Symptoms Rating Scale (PSYRATS) that had persisted for at least two months and that was not considered the direct result of substance use. Exclusion Criteria: * Serious medical or neurological illness known to interfere with cognitive functioning (uncontrolled/unstable diabetes, uncontrolled hypothyroidism, Cushing's disease, Lupus, any demyelinating disease such as Multiple Sclerosis, HIV infection, CNS infection, unstable heart disease, active hepatitis, other significant endocrine condition, any cancer involving the CNS/brain, any uncorrected vision problems, tardive dyskinesia). * History of severe head trauma with loss of consciousness \>30 minutes. * Primary diagnosis of alcohol or substance use disorder or personality disorder

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Conditions

The condition(s) this trial relates to.

Delusions Paranoid Disorders Psychotic Disorders schizophrenia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Schizophrenia disorders

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Vanderbilt University Medical Center

    RECRUITING

    Nashville, Tennessee, 37212, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.