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Stomach bug subtypes may raise cancer risk – study to track 3,000 people

NCT ID NCT06896370

Knowledge-focused Sponsor: Fudan University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study follows 3,000 adults aged 40 and older who carry Helicobacter pylori, a common stomach bug. Researchers want to see if people with certain high-risk subtypes of the bacteria develop stomach cancer more often than those with other subtypes or no infection. Participants will have regular check-ups and stomach exams over 3 to 10 years. No treatment is given—this is purely an observation to better understand cancer risk.

What this could mean

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

What this could lead to
If successful, this study could help identify which H. pylori carriers are at highest risk for stomach cancer, enabling targeted screening.
What could go wrong
This is an observational study, not a treatment trial. It only tracks risk and cannot prove cause. Results may take years and may not change current screening guidelines.

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 3,000 people

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

Started

Jul 2025

Expected to finish

Dec 2035

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

Subjects were recruited from communities in Tongling, Anhui Province.

Ages

40 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. Age ≥ 40 years, gender is not limited. 2. Able and willing to provide informed consent and willing to undergo baseline and follow-up examinations. Exclusion Criteria: 1. A history of diagnosed gastric cancer or other malignant tumors of the digestive tract. 2. Comorbid severe underlying conditions (e.g., severe cardiopulmonary insufficiency, liver or renal failure, etc.) that are likely to result in a short life expectancy or render long-term follow-up impractical. 3. Severe mental illness or incapacity to participate in the study due to lack of civil behavior. 4. Pregnant or breastfeeding women. 5. Other conditions that the investigator deems inappropriate for participation in the study.

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Conditions

The condition(s) this trial relates to.

gastric neoplasm Helicobacter pylori infectious disease gastric cancer prevention target

As listed by the trial registrant

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

Gastric (stomach) cancer Helicobacter infection

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

  • People's Hospital of Tongling City

    RECRUITING

    Tongling, China

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