Could a simple water trick help more doctors screen for colon cancer?

NCT ID NCT03208283

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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 Results may not be published yet.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
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Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 07, 2026 · Last updated Jul 08, 2026 · Updated 1 time

Summary

This study compares two ways of inserting a flexible sigmoidoscope—a scope used to screen for colorectal cancer—during training for primary care doctors and nurse endoscopists. One group uses the standard air inflation method, while the other uses sterile water to gently open the colon. The goal is to see if the water method helps trainees complete the procedure more often and with less discomfort for patients, potentially making screening easier to learn and more comfortable.

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 the water method improves training, it could make colorectal cancer screening more accessible by enabling more primary care doctors to perform the procedure effectively.
What could go wrong
This is a training study, not a direct test of cancer detection. The water method may not improve learning or patient comfort as hoped, and results may not apply to all settings.

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

408 people

The number who actually took part.

Started

Oct 2014

Finished

Dec 2023

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

50 to 70 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: * Consecutive asymptomatic patients suitable for CRC screening by FS * Age 50 - 70 years * Written informed consent available Exclusion Criteria: * Contraindications for endoscopy due to comorbidities * Unable to provide written informed consent * Personal history of polyposis syndrome, personal history of CRC, personal history of inflammatory bowel disease * Coagulopathy (INR\>1.5) or thrombocytopenia (platelets \<50,000) * Pregnant patients

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As listed by the trial registrant

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

Contacts and locations

Locations

  • Centre for Digestive Health, Institute of Digestive Disease, Chinese University of Hong Kong

    Hong Kong, Hong Kong

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