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Gut bug tied to fatty liver? scientists launch probe

NCT ID NCT07455149

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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 will examine whether a specific gut bacterium, Ruminococcus gnavus, and the chemicals it produces are linked to metabolic dysfunction-associated fatty liver disease (MAFLD). Researchers will compare 200 healthy adults and those with MAFLD to understand the connection. No treatments or interventions are given; this is purely an observational study to gather knowledge.

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 200 people

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

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Oct 2030

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

Meet eligibility criteria

Ages

18 years and older

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: * 1.Healthy individuals without a history of liver disease or related underlying diseases; or patients diagnosed with metabolic dysfunction-associated fatty liver disease (MAFLD) according to the latest guideline, Guidelines for the Prevention and Treatment of Metabolic (Dysfunction-Associated/Non-Alcoholic) Fatty Liver Disease (2024 Edition), meeting the following criteria: (i) imaging-based diagnosis of fatty liver and/or liver biopsy showing ≥5% macrovesicular steatosis in hepatocytes; (ii) presence of at least one component of metabolic syndrome (MetS); and (iii) exclusion of other causes of fatty liver, including excessive alcohol consumption (weekly ethanol intake ≥210 g for men and ≥140 g for women), malnutrition, hepatolenticular degeneration (Wilson's disease), and other potential etiologies. 2.Willingness to participate in this study and to sign the informed consent form. 3.Age \>18 years. Exclusion Criteria: * 1\. History of severe organic diseases in the liver, gastrointestinal tract, kidneys, or other systems, malignant tumors, or autoimmune diseases. 2\. Patients who have had an acute infection or inflammatory disease within the past month. 3\. Use of laxatives, antibiotics, probiotics, prebiotics, proton pump inhibitors, or other medications that may affect the gut microbiota within the past month.

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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

  • Zhujiang Hospital of Southern Medical University

    Guangzhou, Guangdong, 510000, China

More trials for these conditions

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