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Can your diet and gut bugs predict colon cancer?

NCT ID NCT04666727

Knowledge-focused Sponsor: M.D. Anderson Cancer Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This pilot study at M.D. Anderson Cancer Center is looking at how diet and the microbiome (the bacteria in your gut) might affect the development of colorectal cancer. Researchers will collect tissue, stool, and blood samples from 30 people undergoing screening colonoscopy. The goal is to understand if certain eating patterns lead to genetic changes in colon cells that could increase 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 dietary patterns that lower colorectal cancer risk.
What could go wrong
This is a small, early-stage pilot study with only 30 participants, so results may not apply broadly. It is designed to gather information, not to test a treatment.

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 30 people

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

Started

Sep 2020

Expected to finish

Jan 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.

Who is studied

Patients presenting for a screening colonoscopy at MD Anderson West Houston

Ages

45 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: * GROUP I: Patients presenting for a screening colonoscopy * GROUP I: Age of 45 and above * GROUP I: Strict vegetarian diet, determined by using diet history questionnaire 3.0 National Institutes of Health (NIH) * GROUP I: Non smoker * GROUP I: Ability to understand and willingness to sign an informed consent form, complete web based dietary assessment and provide stool, colonic mucosa and blood samples * GROUP II: Patients presenting for a screening colonoscopy * GROUP II: Age of 45 and above * GROUP II: Omnivorous diet * GROUP II: Non smoker * GROUP II: Ability to understand and willingness to sign an informed consent form, complete web based dietary assessment and provide stool, colonic mucosa and blood sample Exclusion Criteria: * • Current smokers (nicotine abuse only) * Positive family history of colon cancer or colon cancer related syndromes * Recent use of antibiotics in 1 month * History of inflammatory bowel disease, and/or radiation enteritis or colitis * Pregnant and breastfeeding women * Women of child-bearing potential who have positive urine or serum pregnancy test * Heavy drinker (defined as more than 14 drinks per week) * Currently using anti-flatulence medications, probiotics and/or fiber supplements * Major dietary restrictions and/or following a special diet * Patient with positive fecal test/symptoms

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Conditions

The condition(s) this trial relates to.

colorectal carcinoma colorectal neoplasm

As listed by the trial registrant

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

Colorectal carcinoma

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

  • M D Anderson Cancer Center

    RECRUITING

    Houston, Texas, 77090, United States

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