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Poop pills could protect gut after colon surgery – early trial begins

NCT ID NCT06692179

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
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 Results may not be published yet.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
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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Sep 04, 2026 · Updated 3 times

Summary

This early-stage trial is testing whether a pill made from freeze-dried healthy donor stool (MTP-101P) is safe and can restore good bacteria in people having part of their colon removed. Forty adults aged 18-75 with colon polyps, early-stage cancer, or diverticulitis will take the pill after surgery. Researchers will check if the donor bacteria take hold and improve gut health markers.

What this could mean

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

Active substance
freeze-dried fecal microbiota (MTP-101P)
What this could lead to
If successful, this could pave the way for a simple pill to restore healthy gut bacteria after colon surgery, potentially reducing infections like C. diff.
What could go wrong
This is a very early Phase 1 trial with only 40 people, so safety and effectiveness are not yet proven. The treatment may not work or could cause unexpected side effects.

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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

21 people

The number who actually took part.

Started

Feb 2025

Finished

Jun 2026

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

18 to 75 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: * Able/willing to provide informed consent * Between 18-75 years of age * Undergoing surgery for unresectable polyps, early-stage colon cancer (Stage 1 or 2) not predicted based on pre-operative National Comprehensive Cancer Network guidelines to meet criteria for adjuvant chemotherapy, or a history of diverticulitis. * Able to provide fecal samples. * Stated willingness to comply with all study procedures and availability for the duration of trial to follow-up by telephone, in-person, email, and/or video visits or correspondence Exclusion Criteria: * Any history of inflammatory bowel disease * Pregnancy or breastfeeding. A pregnancy test will be obtained from females of child-bearing potential on the proposed day of MTP-101P (prior to its administration). Patients with a positive pregnancy test will be excluded. A negative result will be required for subjects who are females of child-bearing potential to receive MTP-101P. * Life expectancy of \< 6 months * Presence of ileostomy or colostomy * Known history of inflammatory bowel disease (Crohn's, Ulcerative Colitis) * Patients on immunosuppressants (calcineurin inhibitors, prednisone ≥ 20 mg/day, methotrexate, azathioprine, immunosuppressive biologics, JAK inhibitors). * Patients with neutropenia (an absolute neutrophil count \<0.5 x 10\^9 cells/L) obtained on a complete blood count with differential at screening. * History of solid organ or bone marrow transplant. * Anticipated recurrent antibiotic use (e.g., patients with frequent urinary tract infections or sinusitis). * History of severe anaphylactic food allergy. * History of celiac disease. * Patients receiving cancer chemotherapy, immunotherapy, or radiation. * Subjects who, in the opinion of the Investigator, are not capable of giving informed consent for the study or who are unable or unwilling to adhere to the study requirements outlined in the protocol.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • University of Minnesota

    Minneapolis, Minnesota, 55414, United States

More trials for these conditions

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