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Brain fuel mystery: new study scans energy use in early schizophrenia

NCT ID NCT07309172

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 the brain uses ketones and sugar for energy in people experiencing their first episode of schizophrenia. Researchers will use PET scans to compare brain metabolism in 22 patients before and after 4-8 weeks of antipsychotic treatment, and also compare them to 12 healthy volunteers. The goal is to understand brain energy changes, not to test a new treatment. Participants receive standard care throughout the study.

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.

Participants

About 34 people

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

Started

Apr 2025

Expected to finish

Dec 2027

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.

Who is studied

Antipsychotic-naive patients with FES and healthy controls

Ages

18 to 35 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: Inclusion criteria for patients with FES 1. Age 18-35 years 2. Diagnosed with FES (ICD-10: F20) 3. Able to give informed oral and written consent. Inclusion criteria for healthy controls 1. Age 18-35 years 2. No mental disorder (ICD-10: F00-99) 3. Able to give informed oral and written consent. Exclusion Criteria: Exclusion criteria for patients with FES 1. Any coercive measure including patients in forensic psychiatry 2. In a clinical condition where the treating clinician evaluates that the patient is not able to attend the research study. 3. Previous use of AP at an antipsychotic dose (except for Risperidone ≤0.5 mg, Abilify ≤2.5 mg, Seroquel ≤50 mg or Zyprexa ≤2.5 mg) for more than 2 continuous weeks in the past year and/or 6 weeks over a lifetime 4. Use of an antipsychotic in the last 3 months before inclusion at a dose greater than: 4.1 Seroquel/Quetiapine 50 mg 4.2 Risperdal/Risperidone 0.5 mg 5. Comorbidity: Borderline intelligence or intellectual disability, autism spectrum disorder, decompensated substance use disorder, psychosis induced by a medical condition or psychosis induced by medication or drug use. 6. Pregnancy, childbirth within the past 6 months, or breastfeeding. Female participants should use an effective contraception. 7. Contraindications to MRI (metal, severe claustrophobia). 8. Acute suicidal thoughts (e.g., resulting in hospitalization) 9. Diabetes mellitus type 1. History of severe head trauma, stroke, chemotherapy or brain surgery. Hypo- or hyperthyroidism. Epilepsy. Systemic glucocorticoid hormone treatment. 10. Other conditions interfering with participation according to the qualified physician's judgment. Exclusion criteria for healthy controls 1. Previous use of an antipsychotic dose (except for Risperidone ≤0.5 mg, Abilify ≤2.5 mg, Seroquel ≤50 mg or Zyprexa ≤2.5 mg) for more than 2 continuous weeks in the past year and/or 6 weeks over a lifetime 2. Use of AP in the last 3 months before inclusion at a dose greater than: 1. Seroquel/Quetiapine 50 mg 2. Risperdal/Risperidone 0.5 mg 3. Pregnancy, childbirth within the past 6 months, or breastfeeding. Female participants should use an effective contraception. 4. Contraindications to MRI (metal, severe claustrophobia). 5. Diabetes mellitus type 1. History of severe head trauma, stroke, chemotherapy or brain surgery. Hypo- or hyperthyroidism. Epilepsy. Systemic glucocorticoid hormone treatment. 6. Other conditions interfering with participation according to the qualified physician's judgment.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

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

  • Aarhus University Hospital, Psychosis Research Unit

    RECRUITING

    Aarhus, Denmark

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