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40,000-Person study aims to stop two cancers before they start

NCT ID NCT03793335

Prevention Sponsor: National Taiwan University Hospital Source: ClinicalTrials.gov ↗

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
Registered, but not yet taking participants.
By invitation only This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 whether personalized screening can prevent stomach and colon cancer in 40,000 healthy adults aged 50-75. For stomach cancer, researchers combine a test for H. pylori bacteria with a blood test for stomach damage to identify high-risk individuals. For colon cancer, they use a stool test to prioritize who gets a colonoscopy first. The goal is to catch and stop cancer early.

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 40,000 people

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

Started

Apr 2019

Expected to finish

Dec 2029

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

A community-based mass screening for gastric cancer and colorectal cancer is designed and targeted at community residents aged 50-75 years in Taiwan.

Ages

50 to 75 years

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. Aged 50-75 years 2. Confirmed non-gastric cancer/colorectal cancer healthy participant 3. Mentally competent to be able to understand the consent form 4. Able to communicate with study staff for individuals 5. Agree to link the screening data to National Cancer Registry Exclusion Criteria: 1. Confirmed gastric cancer/colorectal cancer healthy participant 2. Status post gastrectomy

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Conditions

The condition(s) this trial relates to.

colorectal neoplasm gastric neoplasm colorectal cancer prevention target gastric cancer prevention target

As listed by the trial registrant

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

Colorectal cancer Gastric cancer

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

    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 ↗

  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

  • National Taiwan University Hospital

    Taipei, Taiwan

More trials for these conditions

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