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ClinicalTrials.gov public records Last synced Oct 19, 2026, 3:43 PM EDT

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Showing 1–24 of 77 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Stool Microbiome Clear all
Active, not recruiting Not applicable Interventional

The Beans to Enrich the Gut Microbiome vs. Obesity's Negative Effects (BE GONE) Trial

NCT02843425
View directory record Official record
Conditions
Colorectal Cancer Prevention
Interventions
Regular Diet, Navy Beans (Canned)
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
30 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Autologous Fecal Microbiota Transplantation to Prevent Antibiotic Resistant Bacteria Colonization

NCT03061097
View directory record Official record
Conditions
Antibiotic Resistant Strain
Interventions
Autologous fecal microbiota transplant (Auto-FMP Enema), Placebo Enema Preparation
Biological · Other
Lead sponsor
Microbiome Health Research Institute
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced Oct 19, 2026, 3:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Fecal Microbiota Transplantation (FMT) in Multiple Sclerosis

NCT03975413
View directory record Official record
Conditions
Multiple Sclerosis, Relapsing-Remitting
Interventions
Fecal Microbiota Transplantation (FMT)
Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Feasibility of Rice Bran Supplementation in Nicaraguan Children

NCT02615886
View directory record Official record
Conditions
Dietary Rice Bran Supplementation
Interventions
Observational Control, Rice bran
Other · Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
4 Months to 13 Months
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 19, 2017 · Synced Oct 19, 2026, 3:43 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Irritable Bowel Syndrome and Control Volunteers: Diet Challenge

NCT03983434
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
Inulin
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 30, 2025 · Synced Oct 19, 2026, 3:43 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Assessing the Short-Term Effects of Multi-Fiber Supplementation on Gut Health

NCT07787026
View directory record Official record
Conditions
Mixed Fiber Supplementation for Healthy Adults
Interventions
Prebiotic, Placebo
Dietary Supplement
Lead sponsor
Brown University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

ButyraGen™, Short Chain Fatty Acids and Gut Microbiome

NCT05601635
View directory record Official record
Conditions
Healthy
Interventions
ButyraGen™
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 25, 2023 · Synced Oct 19, 2026, 3:43 PM EDT
Recruiting No phase listed Observational

Fecal Microbiota Transplant National Registry

NCT03325855
View directory record Official record
Conditions
Fecal Microbiota Transplantation, Clostridium Difficile Infection, Gut Microbiome
Interventions
None - Observational
Other
Lead sponsor
American Gastroenterological Association
Other
Eligibility
Not listed
Enrollment
4,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
52
States / cities
Phoenix, Arizona • Los Angeles, California • Redwood City, California + 39 more
Source: ClinicalTrials.gov public record
Updated Jan 21, 2026 · Synced Oct 19, 2026, 3:43 PM EDT
Completed No phase listed Observational

Isolation and Characterization of Multiple Microbial Species From Diverse Healthy Adults

NCT05150184
View directory record Official record
Conditions
Human Microbiome
Interventions
Non-interventional
Other
Lead sponsor
Danisco
Industry
Eligibility
18 Years to 50 Years
Enrollment
52 participants
Timeline
2021 – 2023
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 7, 2023 · Synced Oct 19, 2026, 3:43 PM EDT
Active, not recruiting Phase 2 Interventional

Fecal Microbiota Transplant as Treatment of Hepatic Encephalopathy

NCT03420482
View directory record Official record
Conditions
Hepatic Encephalopathy
Interventions
Fecal Microbiota Transplant (FMT) oral capsules, Placebo oral capsule
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 31, 2025 · Synced Oct 19, 2026, 3:43 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Aimmune Longitudinal Collaboration Study

NCT07218640
View directory record Official record
Conditions
Stool Spore Colony Forming Units, Microbiome Composition, Dietary Fiber, Stress
Interventions
Chia seeds
Other
Lead sponsor
Aimmune Therapeutics, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Ambler, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 19, 2026, 3:43 PM EDT
Recruiting No phase listed Observational

Determining the Link Between Dietary Patterns, Fecal Microbiome and Response to Neoadjuvant Chemotherapy

NCT06595160
View directory record Official record
Conditions
Borderline Resectable Pancreatic Ductal Adenocarcinoma, Resectable Pancreatic Ductal Adenocarcinoma, Stage I Pancreatic Cancer AJCC v8
Interventions
Non-Interventional Study
Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 1, 2025 · Synced Oct 19, 2026, 3:43 PM EDT
Terminated Phase 1Phase 2 Interventional

Effects of Probiotic on Inflammation and Microbiota in Patients With NASH

NCT03511365
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease, Probiotics MeSH Descriptor Data 2018, Interleukin-17 MeSH Descriptor Data 2018
Interventions
Probiotic Formulation VSL#3
Biological
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Jan 7, 2020 · Synced Oct 19, 2026, 3:43 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Sample Collection From Healthy Volunteers for Assay Optimization

NCT03538600
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 80 Years
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2043
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 19, 2026, 3:43 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Safety and Efficacy of Fecal Microbiome Transplantation (FMT) in the Treatment of Antibiotic Dependent Pouchitis (ADP)

NCT02782325
View directory record Official record
Conditions
Pouchitis
Interventions
Active FMT, then open label FMT, Placebo FMT, then open label FMT
Biological
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 75 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 14, 2019 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessing Uniqueness of Inflammatory Bowel Disease Related Microbiome-derived Biomarkers

NCT05640583
View directory record Official record
Conditions
Irritable Bowel Disease
Interventions
Hygieacare System
Device
Lead sponsor
HyGIeaCare, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 27, 2023 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Time-restricted Eating on Nutrient Absorption in Healthy Adults

NCT04877262
View directory record Official record
Conditions
Digestibility
Interventions
weight maintenance diet (WMD)
Other
Lead sponsor
Florida State University
Other
Eligibility
20 Years to 45 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Jun 23, 2022 · Synced Oct 19, 2026, 3:43 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Mouthrinse on the Microbiome of the Oral Cavity and GI Tract

NCT05603650
View directory record Official record
Conditions
Oral Bacterial Infection, Oral Infection, Microbial Colonization, Viral Infection
Interventions
Lumineux Oral Essentials rinse, Listerine rinse
Other
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Irvine, California
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Oct 19, 2026, 3:43 PM EDT
Not listed Phase 1Phase 2 Interventional

Safety Evaluation of Fecal Microbiota Transplantation in Severe Alcoholic Hepatitis

NCT05006430
View directory record Official record
Conditions
Alcoholic Hepatitis
Interventions
Fecal Microbiota Transplantation, Placebo
Biological · Other
Lead sponsor
Prasun Kumar Jalal
Other
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 23, 2025 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Phase 1 Interventional

Study of the Fecal Microbiome in Patients With Parkinson's Disease

NCT03671785
View directory record Official record
Conditions
Parkinson Disease
Interventions
PRIM-DJ2727, Placebo oral capsule
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
55 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Phase 1Phase 2 Interventional

FMT in Pediatric Crohn's Disease

NCT03194529
View directory record Official record
Conditions
Crohn Disease, Pediatric Crohns Disease
Interventions
FMT
Biological
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
7 Years to 21 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 13, 2020 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Not applicable Interventional

Dietary Optimization of Microbiome Recovery Following Fecal Microbiota Transplantation

NCT05826418
View directory record Official record
Conditions
Recurrent Clostridium Difficile Infection, Fecal Microbiota Transplant
Interventions
MEND diet, mNICE diet
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 12, 2025 · Synced Oct 19, 2026, 3:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Microbiota Diversity and Composition and Polyphenol Bioavailability

NCT02677649
View directory record Official record
Conditions
Fecal Microbiota
Interventions
cranberry, placebo
Other
Lead sponsor
Tufts University
Other
Eligibility
20 Years to 55 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 23, 2017 · Synced Oct 19, 2026, 3:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Stool Microbiome, Pathogens, and Infectious Agents Among Olympic and Elite Athletes

NCT02818413
View directory record Official record
Conditions
Athletic Performance
Interventions
Biospecimen collection and questionnaires
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 29, 2017 · Synced Oct 19, 2026, 3:43 PM EDT