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Saliva swab may predict weight loss drug success

NCT ID NCT06814938

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 17, 2026 · Updated 2 times

Summary

This study tests whether a biomarker found in saliva can predict how much weight people with obesity will lose when taking semaglutide. Researchers will compare weight changes in biomarker-positive and biomarker-negative participants over 24 weeks. The goal is to personalize obesity treatment, making it more effective and efficient.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Semaglutide
What this could lead to
If successful, this could lead to a simple saliva test that tells doctors which patients will benefit most from semaglutide for weight loss.
What could go wrong
This is a small, early-stage study focused on prediction, not a new treatment. The biomarker may not reliably predict response in real-world settings.

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

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 135 people

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

Started

Feb 2025

Expected to finish

Nov 2028

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: \- Obesity (BMI ≥30 kg/m2) without or with controlled chronic conditions (e.g., controlled hypertension). Exclusion Criteria: * Weight changes greater than 3% in the previous 3 months * History of bariatric surgery including lap band and bariatric endoscopy * Significant untreated psychiatric dysfunction based upon screening with the Hospital Anxiety and Depression Inventory (HAD), Questionnaire on Eating and Weight Patterns (binge eating disorders and bulimia) and Columbia Suicide Severity Rating Scale (C-SSRS). If such a dysfunction is identified by an anxiety or depression score \>11 or difficulties with substance or eating disorders, the participant will be excluded and given a referral letter to his/her primary care doctor for further appraisal and follow-up. Any suicidal ideation of type 4 or 5, any suicide attempt during the patient's lifetime, or any suicidal behavior in the last month. * Current use of anti-obesity medications or GLP1R agonists for Type 2 Diabetes * Any contraindication to FDA-approved GLP1R agonists * A person who is pregnant or wanting to become pregnant * Once the positive or negative cohort is filled at 2:1 ratio, some patients will be screen failed if their gene cohort is full. * A family member who is enrolled in this study. * Principal Investigator Discretion

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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.

Contacts and locations

Locations

  • Mayo Clinic in Florida

    Jacksonville, Florida, 32224, United States

  • Mayo Clinic in Rochester

    Rochester, Minnesota, 55905, United States

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