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Gut bacteria transplant shows promise for recurring UTIs

NCT ID NCT07627412

Disease control Sponsor: The Second Hospital of Nanjing Medical University Source: ClinicalTrials.gov ↗

What the study statuses mean

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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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested whether transplanting healthy gut bacteria (washed microbiota transplantation) could help people who get frequent urinary tract infections (UTIs). Thirty adults with recurrent UTIs received the treatment through a tube into the gut. Researchers tracked how many UTIs occurred over the next year to see if the transplant reduced infections.

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 1/2

Runs two stages together: safety and dose first, then whether the treatment works.

Participants

30 people

The number who actually took part.

Started

Aug 2022

Finished

Aug 2024

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 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: 1. Age ≥18 years, both sexes. 2. Meeting the diagnostic criteria for recurrent urinary tract infection: ≥2 symptomatic UTI episodes within 6 months or ≥3 episodes within 1 year. 3. Planning to receive washed microbiota transplantation (WMT) treatment. 4. Able to provide informed consent and comply with scheduled follow-up visits, examinations, and specimen collection. Exclusion Criteria: 1. Received antimicrobial therapy within 48 hours before WMT. 2. Complicated UTI requiring surgical intervention, including urinary tract tumor, stricture, congenital malformation, or neurogenic bladder. 3. Co-infection with other urogenital pathogens including fungi, viruses, Mycoplasma, or Chlamydia. 4. Unable to tolerate gastroscopy or colonoscopy for TET tube placement. 5. Severe comorbidities involving heart, liver, kidney, hematopoietic system, respiratory system, or endocrine system that may affect survival, or other serious diseases affecting survival. 6. Pregnant or lactating women. 7. Coexisting psychiatric disorders. 8. Other conditions deemed unsuitable for enrollment by the investigator.

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Conditions

The condition(s) this trial relates to.

urinary tract infection urinary tract infections, recurrent, susceptibility to

As listed by the trial registrant

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

Recurrent urinary tract infections Urinary tract infections

Contacts and locations

Locations

  • Department of Microbiota Medicine & Medical Center for Digestive Diseases, The Second Affiliated Hospital of Nanjing Medical University

    Nanjing, Jiangsu, 210011, China

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