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Mayo clinic launches massive study on gut microbiome and cancer therapy

NCT ID NCT05112614

Knowledge-focused Sponsor: Mayo Clinic 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 from Mayo Clinic is looking at how the bacteria in your gut (the microbiome) might influence how well cancer treatments work. Researchers will collect blood and stool samples from 3,000 cancer patients undergoing therapy or stem cell transplants. The goal is to find links between gut microbes and treatment outcomes, which could one day help doctors tailor cancer therapy to each patient.

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 doctors personalize cancer therapy based on a patient's gut bacteria, potentially improving treatment effectiveness.
What could go wrong
This is an observational study, not a treatment trial. It will not directly test any new drug or therapy, and results may take years to translate into clinical practice.

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

Sep 2019

Expected to finish

Oct 2030

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 undergoing cancer therapy for any underlying cancer diagnosis and patients undergoing stem cell transplant for any hematological condition

Ages

18 to 99 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: * Age 18-99 * Diagnosis of cancer and undergoing cancer therapy or scheduled to start cancer therapy or undergoing stem cell transplant for any hematological condition Exclusion Criteria: * Unable to provide informed consent * Vulnerable adults

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Conditions

The condition(s) this trial relates to.

cancer hematopoietic and lymphoid cell neoplasm hematopoietic and lymphoid system neoplasm

As listed by the trial registrant

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

Hematopoietic and lymphoid cell neoplasm Malignant solid neoplasm

How to take part

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

  1. The study's own enquiry address

    This study publishes an address for enquiries. See it below .

  2. The places running it

    1 site. The list below names each one and where it is.

  3. 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 ↗

  4. 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

Study contacts

  • Contact

    Email: •••••@•••••

Locations

  • Mayo Clinic in Arizona

    ACTIVE_NOT_RECRUITING

    Scottsdale, Arizona, 85259, United States

  • Mayo Clinic in Florida

    ACTIVE_NOT_RECRUITING

    Jacksonville, Florida, 32224, United States

  • Mayo Clinic in Rochester

    RECRUITING

    Rochester, Minnesota, 55905, United States

    Contact Email: •••••@•••••

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