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Scientists probe mouth bugs in obesity surgery patients

NCT ID NCT06781229

Knowledge-focused Sponsor: University Hospital, Toulouse Source: ClinicalTrials.gov ↗

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 observational study looks at the bacteria in dental plaque of 170 people with obesity (BMI 30+) who are scheduled for bariatric surgery. Researchers want to see if the types and amounts of mouth bacteria differ between those with obesity (BMI 30-35) and those with morbid obesity (BMI over 35). Participants answer questions about their lifestyle and provide saliva and gum samples during routine care. No treatment is given; the goal is simply to learn more.

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 170 people

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

Started

Feb 2025

Expected to finish

Feb 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.

Who is studied

Obese patients scheduled to undergo bariatric surgery

Ages

18 years and older

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: * BMI greater than or equal to 30 * Be on the list of patients scheduled for bariatric surgery, * Be able to receive information about the study and understand the information form in order to take part in the study. This implies mastering the French language, Exclusion Criteria: * Alcohol consumption \>30g/d (men) or 20g/d (women), * Having taken antibiotics, prebiotics or probiotics in the month prior to inclusion (this has an influence on the composition of the patient's microbiota), * During pregnancy or breastfeeding, * For whom oral surgery is planned (surgery for benign or malignant tumours of the maxillary and mandibular bone bases), or with a history of oral surgery in the month prior to inclusion, * At risk of infection (existence of one or more of the following known chronic infectious diseases: HIV, HBV, HCV and mononucleosis) and/or chronic renal insufficiency (creatinine clearance \< 60ml/min), * Patients with a general pathology that contraindicates the performance of diagnostic procedures such as periodontal probing (patients at high risk of infective endocarditis according to the ANSM). * Totally edentulous patients

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Conditions

The condition(s) this trial relates to.

morbid obesity Obesity obesity disorder

As listed by the trial registrant

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

Bariatric surgery Obesity, morbid

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

  • University Hospital of Toulouse

    RECRUITING

    Toulouse, France

More trials for these conditions

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