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ClinicalTrials.gov public records Last synced Oct 19, 2026, 4:42 AM EDT

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Showing 1–24 of 621 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: GI Tract Disorders Clear all
Completed Phase 2 Interventional Results available

Study of a Monoclonal Antibody KHK4083 in Moderate Ulcerative Colitis

NCT02647866
View directory record Official record
Conditions
Ulcerative Colitis, Digestive System Diseases, Colitis, Ulcerative, Colitis, Gastrointestinal Diseases, Inflammatory Bowel Diseases, Intestinal Diseases, Colonic Diseases, Autoimmune Disease, Abdominal Pain
Interventions
KHK4083, Placebo
Drug
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
18 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 26, 2024 · Synced Oct 19, 2026, 4:42 AM EDT
Recruiting No phase listed Observational

Assess Diversity of Gut Microbiome in Met NSCLC in Correlation to Tx & Adverse Effects

NCT06221800
View directory record Official record
Conditions
Non Small Cell Lung Cancer
Interventions
Microbiome
Diagnostic Test
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Oct 19, 2026, 4:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exercise Effects on Insulin, Gut Peptides, and Appetite

NCT01891617
View directory record Official record
Conditions
Endocrine and Metabolic Responses to Exercise and Diets
Interventions
Exercise and diets
Other
Lead sponsor
University of Michigan
Other
Eligibility
50 Years to 65 Years · Female only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 13, 2016 · Synced Oct 19, 2026, 4:42 AM EDT
Active, not recruiting Not applicable Interventional

Gut Microbe Composition, Exercise, and Breast Breast Cancer Survivors

NCT04088708
View directory record Official record
Conditions
Breast Cancer, Gut Microbiome, Exercise, Fatigue
Interventions
Aerobic Exercise Training, Attention Control
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 74 Years · Female only
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced Oct 19, 2026, 4:42 AM EDT
Completed Not applicable Interventional

Effect of Curcumin on Gut Microbiota in IBS

NCT03568513
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
Curcumin, Placebo
Dietary Supplement
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
10 Years to 18 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 21, 2021 · Synced Oct 19, 2026, 4:42 AM EDT
Terminated Not applicable Interventional

Prevention of Parenteral Nutrition-Associated Cholestasis With Cyclic Parenteral Nutrition in Infants

NCT01062815
View directory record Official record
Conditions
Cholestasis, Prematurity, Gastroschisis, Intestinal Atresia, Necrotizing Enterocolitis
Interventions
Parenteral Nutrition
Dietary Supplement
Lead sponsor
University of Miami
Other
Eligibility
Up to 7 Days
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Nov 23, 2015 · Synced Oct 19, 2026, 4:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Metabolic Response to Chardonnay Grape Marc Powder

NCT03203915
View directory record Official record
Conditions
Dyslipidemia, Obesity
Interventions
Chardonnay grape marc marc high polyphenol dose (120mg), Chardonnay grape marc powder low polyphenol dose (75mg), Placebo (0mg)
Dietary Supplement
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
35 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jul 16, 2021 · Synced Oct 19, 2026, 4:42 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

The Effect of Therapeutic Fecal Transplant on the Gut Microbiome in Children With Ulcerative Colitis

NCT02291523
View directory record Official record
Conditions
Ulcerative Colitis
Interventions
Fecal Microbial Transplant
Biological
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
7 Years to 21 Years
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 2, 2023 · Synced Oct 19, 2026, 4:42 AM EDT
Terminated Not applicable Interventional

Evaluating the Effects of an Exercise Intervention on the Gut Microbiota in Stage II-III Colorectal Cancer Survivors

NCT05930496
View directory record Official record
Conditions
Stage II Colorectal Cancer AJCC v8, Stage III Colorectal Cancer AJCC v8, Colorectal Carcinoma
Interventions
Biospecimen Collection, Exercise Intervention, Health Education, Interview, Questionnaire Administration
Procedure · Other · Behavioral
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 19, 2026, 4:42 AM EDT
Recruiting Phase 1Phase 2 Interventional

Treatment of Moderate to Severe Refractory Crohn's Disease

NCT06721962
View directory record Official record
Conditions
Crohns Disease
Interventions
TRX103, Cyclophosphamide
Biological · Drug
Lead sponsor
Tr1X, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
13
States / cities
Scottsdale, Arizona • Sacramento, California • San Francisco, California + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Oct 19, 2026, 4:42 AM EDT
Recruiting No phase listed Observational

Impact of Gut Microbiome on Metabolic and Bowel Function During the First Year After Spinal Cord Injury

NCT05670288
View directory record Official record
Conditions
Spinal Cord Injuries, Gut Microbiome
Interventions
Not listed
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 85 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Oct 19, 2026, 4:42 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Polyphenols and Cognitive Decline

NCT06507254
View directory record Official record
Conditions
Cognitive Decline, Cognitive Dysfunction
Interventions
Polyphenol Supplement, Placebo Supplement
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Oct 19, 2026, 4:42 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effects of Crofelemer on the Gut Microbiome in Healthy Volunteers and in HIV+ Patients With Non-Infectious Diarrhea

NCT04192487
View directory record Official record
Conditions
Acquired Immunodeficiency Syndrome, Healthy Volunteers, HIV/AIDS, HIV Diarrhea, Human Immunodeficiency Virus
Interventions
Crofelemer delayed-release tablets 125mg
Drug
Lead sponsor
Napo Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
3
States / cities
Tustin, California • Stratford, Connecticut • Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 22, 2021 · Synced Oct 19, 2026, 4:42 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Development of a Noninvasive Metric to Measure Small Bowel Sensation - The Small Intestine Stress Test

NCT07817706
View directory record Official record
Conditions
Disorders of Gut Brain Interaction
Interventions
Mannitol Solution 76 mOsm/L, Mannitol Solution 189 mOsm/L, Mannitol Solution 325 mOsm/L, Scintigraphy
Drug · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 19, 2026, 4:42 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Novel Listeria Vectors Secreting Gut Flora-Altering Agents to Prevent Colon Cancer and Treat Colitis

NCT03014284
View directory record Official record
Conditions
Colon Cancer, Colitis
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years to 100 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Sep 17, 2018 · Synced Oct 19, 2026, 4:42 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Microalgae Extract Dietary Supplement on Gut Health, Anxiety, and Immune Function

NCT06425094
View directory record Official record
Conditions
Gastrointestinal Problem, Anxiety, Stress, Gastrointestinal Symptoms
Interventions
Microalgae Extract Capsules, Placebo
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 19, 2026, 4:42 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effect of a Fermented Dairy Protein With Prebiotic Fiber on GI Complaints

NCT06946017
View directory record Official record
Conditions
Digestive Health, Quality of Life
Interventions
Fermented dairy protein with prebiotic fiber supplement, Control placebo
Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 50 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated May 8, 2026 · Synced Oct 19, 2026, 4:42 AM EDT
Not listed Phase 1Phase 2 Interventional

Beta-Hydroxybutyrate Feasibility Treating IBD

NCT06351124
View directory record Official record
Conditions
Crohn's Disease, Inflammatory Bowel Diseases
Interventions
Feasibility of beta-hydroxybutyrate supplementation to reduce inflammation in patients with Crohn's
Biological
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 19, 2026, 4:42 AM EDT
Not listed No phase listed Observational

Gut Recovery In Patients Following Surgery

NCT05712525
View directory record Official record
Conditions
Gastrointestinal Diseases, Ileus
Interventions
G-Tech Wireless Patch System (WPS)
Diagnostic Test
Lead sponsor
G-Tech Corporation
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 3, 2023 · Synced Oct 19, 2026, 4:42 AM EDT
Completed Not applicable Interventional

Effects of Low FODMAP Diet on Leaky Gut

NCT04526808
View directory record Official record
Conditions
Irritable Bowel Syndrome
Interventions
FODMAP diet
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
2
States / cities
Boston, Massachusetts • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Oct 19, 2026, 4:42 AM EDT
Not listed No phase listed Observational

Los Angeles Prospective GI Biliary and EUS Series

NCT02196935
View directory record Official record
Conditions
Biliary Disease, Pancreatitis, Gastrointestinal Neoplasms
Interventions
clinical course
Other
Lead sponsor
University of Southern California
Other
Eligibility
Not listed
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 15, 2022 · Synced Oct 19, 2026, 4:42 AM EDT
Suspended No phase listed Observational Accepts healthy volunteers

A Study to Explore the Role of Gut Flora in COVID-19 Infection

NCT04359836
View directory record Official record
Conditions
Gut Microbiome, Gastrointestinal Microbiome, COVID, COVID-19, Corona Virus Infection, Coronavirus, Coronaviridae Infections, Coronavirus 19, Coronavirus-19, COVID 19
Interventions
There is no intervention in this study
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 19, 2026, 4:42 AM EDT
Withdrawn No phase listed Observational

A Non-Interventional Pilot Study to Explore the Role of Gut Flora in Autism

NCT04100863
View directory record Official record
Conditions
Autism, Autism Spectrum Disorder, Autistic Disorder, Autism, Akinetic, Autism; Atypical, Autism; Psychopathy, Autism Fragile Syndrome X, Autism With High Cognitive Abilities, Autism-Related Speech Delay, Autism, Susceptibility to, 6, Autism Spectrum Disorder High-Functioning, Autistic Thinking, Autism, Susceptibility to, X-Linked 6, Autistic Behavior
Interventions
No Intervention
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
6 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Oct 19, 2026, 4:42 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Increased Gut Permeability to Lipopolysaccharides (LPS) in Parkinson's Disease

NCT01155492
View directory record Official record
Conditions
Parkinson's Disease, Multiple System Atrophy
Interventions
Not listed
Lead sponsor
Rush University Medical Center
Other
Eligibility
25 Years and older
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 30, 2013 · Synced Oct 19, 2026, 4:42 AM EDT