Poop pills for cancer side effects? new trial tests FMT for immunotherapy diarrhea
NCT ID NCT06206707
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether fecal microbiota transplantation (FMT) capsules can help people with diarrhea and colitis caused by immune checkpoint inhibitor cancer treatment. About 20 adults with melanoma or kidney cancer will receive either FMT or placebo capsules alongside their standard care. The goal is to see if FMT can safely reduce diarrhea and help patients stop steroid use.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2024
- Expected to finish
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Oct 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Age 18 years or above. 2. Histologically proven diagnosis of malignant melanoma and/or kidney cancer. 3. Treatment with any immune checkpoint inhibitor (Nivolumab, Pembrolizumab, Cemiplimab, Atezolizumab, Durvalumab, Avelumab, Ipilimumab), alone or in combination, within the last 8 weeks. 4. Grade 2 or higher CTCAE diarrhea, of which at least 3 stools are Bristol chart score 6-7. 5. Negative PCR for enteric pathogens including C. difficile, after the onset of diarrhea. 6. Signed written informed consent. Exclusion Criteria: 1. Diagnosed bacterial infection requiring antibiotic treatment at inclusion. 2. Pregnancy or breastfeeding. Pregnancy ruled out by male sex, postmenopausal women or a negative choriogonadotropin (hCG) urine test. 3. Primary diarrheal disease pre-existing to the immune checkpoint inhibitor treatment, including inflammatory bowel disease. 4. Unable to ingest capsules. 5. Unable to understand written or oral patient information.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Aarhus University Hospital
RECRUITINGAarhus N, 8200, Denmark
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