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Stool test could replace endoscopy for stubborn stomach bug

NCT ID NCT07533422

Disease control Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests a new way to treat Helicobacter pylori (H. pylori) infections that didn't get better with the first round of antibiotics. Instead of using a scope to take a stomach sample, doctors will use a stool test to find which antibiotics will work best. About 531 adults who have failed one prior treatment will get a personalized 3-drug therapy based on their stool test results. The goal is to see if this approach leads to higher cure rates with fewer side effects.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 531 people

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

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Feb 2027

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 70 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: * ① Age 18-70 years; * Patients with Hp-positive chronic gastritis who have failed initial treatment, as confirmed by urea breath test or endoscopic biopsy; * No use of PPIs, H2-receptor antagonists, antibiotics, or bismuth agents within 4 weeks; * History of having received one previous, standardized Hp eradication therapy. Exclusion Criteria: * ① Use of antibiotics, bismuth agents within 4 weeks prior to treatment, or use of PPIs or H₂-receptor antagonists within 2 weeks prior to treatment; * History of gastric or duodenal surgery; * Concurrent presence of other serious conditions such as cardiac, hepatic, or renal dysfunction, malignant tumors, or other severe internal diseases; * Allergy to any component of the study medications; ⑤ Pregnant or breastfeeding women; ⑥ Participation in other drug studies within 3 months prior to treatment; ⑦ Patients unable to accurately express their complaints or cooperate with the study investigators.

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Conditions

The condition(s) this trial relates to.

Helicobacter pylori infectious disease

As listed by the trial registrant

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

Helicobacter pylori infections Rescue therapy for helicobacter pylori

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  2. A doctor treating you

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