Brain fuel mystery: new study scans energy use in early schizophrenia
NCT ID NCT07309172
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.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 34 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Apr 2025
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 35 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Aarhus University Hospital, Psychosis Research Unit
RECRUITINGAarhus, Denmark
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Other studies related to the condition(s) this trial covers.
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