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RecruitingPhase NA

Effect of GLP1 Receptor Agonist on Brain Insulin Responsiveness

Impact of the Incretin System on Brain Insulin Sensitivity in Humans with Normal Weight, Overweight and Obesity

Assets

GLP-1 / incretin class catch-all / Semaglutide

Listed sites

1

Recruiting sites

1

Enrollment

60

estimated

Study population

Healthy volunteers, Obesity / overweight

Key I/E criterion

BMI 18.5-24.9

Primary endpoint

Cerebral response after insulin

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

NCT IDNCT06487832
Org study ID065/2024BO1

Timeline

Milestones

Study start2024-07-01actual
Study first posted2024-07-05actual
Last update posted2025-03-30actual
Primary completion2027-07-31estimated
Study completion2027-12-31estimated

Assets

Investigational agents

Study populations

Who this study enrolls

Healthy volunteersObesity / overweight

Eligibility

Who can enroll

Minimum age18 Years
Maximum age70 Years
SexAll
Healthy volunteersAccepted

Inclusion criteria

BMI between 18.5 and 24.9 kg/m2; and between 27.5 kg/m2 and 40 kg/m2
Written consent to participate in the study
Written consent to be informed about incidental findings

Exclusion criteria

Type 1 or type 2 diabetes, LADA, MODY, or cardiovascular diseases such as chronic heart failure, myocardial infarction, status post stroke
BMI < 18.5 or > 40 kg/m2
Persons who cannot legally give consent
Pregnancy or lactation
History of severe mental or somatic disorders including neurological diseases (incl. epileptic seizures)
Taking psychotropic drugs
Chronic diseases or medication that influence glucose metabolism
Regular use of analgesic drugs
Previous bariatric surgery
Known allergy against one or more of the used agents
Acute infection and/or antibiotic treatment within the last 4 weeks
Hemoglobin values less than 10.5 g/dl for women, less than 11.5 g/dl for men
Other diseases that in the opinion of the investigator may jeopardize the success of the study or indicate a risk to the volunteer
Participation in a lifestyle intervention study or a pharmaceutical study within the last 30 days
Metal implants which cannot be removed as pacemakers, artificial heart valve, electrical devices as insulin pumps, large tattoos, retainer over more than 4 teeth, contraceptive coil, implanted magnetic metal parts as screws or plates after a surgery
Persons with claustrophobia
Persons with tinnitus
Weight loss or gain of >5% in the last 3 months
Pancreatic diseases
History or family history of multiple endocrine neoplasia (MEN2) or medullary thyroid cancer
History of malignant thyroid disease
History of malignant disease in the past 5 years
Surgery in the last three months
Chronic tobacco use of more than 10 cigarettes/day
Women who do not consent to refrain from breastfeeding until 2 months after the end of the study
Women of childbearing age who do not consent to use safe method of contraception from 28 days before until 2 months after the end of the study or refrain from heterosexual intercourse during this time
Women of childbearing age who do not consent to take a pregnancy test

Endpoints (7)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Coverage by outcome category

Other (unclassified)
3
Patient-reported / QoL
2
Cardiometabolic biomarkers
1
Other clinical outcomes
1

Cardiometabolic biomarkers

1 endpoint
Secondary/protocol endpoint/low confidence

Heart rate variability (HRV)

Time frame:24 hours after semaglutide or placebo administration

descriptive

Patient-reported / QoL

2 endpoints
Secondary/protocol endpoint

Change in subjective feeling of hunger and food craving

Time frame:24 hours after semaglutide or placebo administration

change from baseline, improvement

Secondary/protocol endpoint

Change in mood

Time frame:24 hours after semaglutide or placebo administration

change from baseline, improvement

Other clinical outcomes

1 endpoint
Secondary/protocol endpoint/low confidence

Performance during cognitive tests

Time frame:24 hours after semaglutide or placebo administration

descriptive

Other (unclassified)

3 endpoints
Primary/protocol endpoint/low confidence

Cerebral response after insulin compared to placebo nasal spray

Time frame:24 hours after semaglutide or placebo administration

change from baseline, descriptive

Secondary/protocol endpoint/low confidence

Neural food-cue reactivity after insulin compared to placebo nasal spray

Time frame:24 hours after semaglutide or placebo administration

descriptive

Secondary/protocol endpoint/low confidence

Diffusion-weighted imaging (DWI)

Time frame:24 hours after semaglutide or placebo administration

descriptive

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 1, 2026
Endpoint classificationDelfa endpoint taxonomy v2 (May 13, 2026)
Results tableno registry results posted yet

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 1, 2026 snapshot.