Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 8, 2026, 6:28 PM EDT

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Showing 1–24 of 625 matching trials from the live ClinicalTrials.gov search.
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Conditions
Rheumatoid Arthritis, Arthritis, Rheumatoid, Arthritis
Interventions
No Intervention
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
Ventura, California
Completed Not applicable Interventional Accepts healthy volunteers

Blueberry Intake and Infant Gut Health

NCT05006989
Conditions
Infant Development
Interventions
Blueberry Powder, Placebo Powder
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
4 Months to 5 Months
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Aurora, Colorado
Conditions
Cow Milk Allergy
Interventions
Neocate Infant, new Neocate
Dietary Supplement
Lead sponsor
Nutricia North America
Industry
Eligibility
1 Day to 8 Months
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
22
States / cities
Chandler, Arizona • Tucson, Arizona • Bentonville, Arkansas + 18 more
Conditions
Nutrition
Interventions
Antibiotic (metronidazole and ciprofloxacin)/probiotic
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Cleveland, Ohio
Conditions
Esophageal Atresia
Interventions
Patient's own saliva
Other
Lead sponsor
Stanford University
Other
Eligibility
Up to 3 Months
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Palo Alto, California
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Intermediate Wheatgrass Products and Gut Health

NCT07773441
Conditions
Gut Health, Gastrointestinal Symptoms, Gut Microbiome, Dietary Fiber
Interventions
Intermediate Wheatgrass-Based Products, Whole Wheat-Based Products
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Saint Paul, Minnesota
Conditions
Obesity
Interventions
Flexible Sigmoidoscopy
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Rochester, Minnesota
Conditions
Acne Vulgaris
Interventions
Sarecycline, Doxycycline
Drug
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
9 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Sacramento, California
Conditions
Obesity, Overweight, Type 1 Diabetes Mellitus
Interventions
No intervention
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
7 Years to 17 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
San Diego, California
Recruiting No phase listed Observational

Gut Microbiota in Metabolic Surgery

NCT05000996
Conditions
Bariatric Surgery Candidate, Cardiovascular Diseases, Type 2 Diabetes, Dyslipidemias, Hypertension, Morbid Obesity
Interventions
Bariatric Surgery
Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
21 Years to 65 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2035
U.S. locations
1
States / cities
Nashville, Tennessee
Completed Not applicable Interventional Accepts healthy volunteers

Particle Size Project

NCT05091801
Conditions
Test if Increased Chewing Will Increased Microbiota SCFA Production
Interventions
Intervention
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Durham, North Carolina
Recruiting Phase 1Phase 2 Interventional

Intestinal Microbiome Transplant in ALS

NCT07017946
Conditions
Amyotrophic Lateral Sclerosis ALS
Interventions
MTP-101C
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Breast Neoplasms
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
50 Years to 69 Years · Female only
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2020
U.S. locations
1
States / cities
Denver, Colorado
Recruiting Not applicable Interventional Accepts healthy volunteers

Does Psychotherapy Change the Gut Microbiome in Women of Child-bearing Age?

NCT07200531
Conditions
Chronic Stress
Interventions
Psychotherapy
Behavioral
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 54 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Omaha, Nebraska
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Pulse Consumption, Gut Microbiome, and Appetite in Healthy Participants

NCT07043712
Conditions
Microbial Colonization, Metabolic Syndrome
Interventions
High pulse consumption
Dietary Supplement
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
20 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Columbia, Missouri
Completed Not applicable Interventional Accepts healthy volunteers

Dairy Fat and Fermentation Study

NCT05840081
Conditions
Heart Diseases, Microbial Colonization, Inflammation
Interventions
Milk or yogurt beverage
Other
Lead sponsor
Tufts University
Other
Eligibility
50 Years and older
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Completed Not applicable Interventional Accepts healthy volunteers

Fiber Blends and Gut Microbiota (FB)

NCT04101344
Conditions
Gut Microbiome
Interventions
Two fiber-blend snack and four fiber-blend snack
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
Gut Microbiome
Interventions
Dietary MACs, Control
Dietary Supplement · Other
Lead sponsor
Access Business Group
Industry
Eligibility
40 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Addison, Illinois
Conditions
Crohn Disease
Interventions
MTP-101C, MTP-101S
Biological
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 89 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
3
States / cities
Minneapolis, Minnesota • New York, New York • Dallas, Texas
Conditions
Gut Microbiome
Interventions
device interrogation
Diagnostic Test
Lead sponsor
North Florida Foundation for Research and Education
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Gainesville, Florida
Conditions
Female Breast Cancer
Interventions
Home-based exercise intervention
Behavioral
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Birmingham, Alabama
Conditions
Metabolic Syndrome, Polycystic Ovary Syndrome
Interventions
wheat dextrin, Oral Contraceptives, Low-Dose, Maltodextrin
Dietary Supplement · Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers

Traumatic Brain Injury and the Gut Microbiome

NCT04949607
Conditions
Brain Injury, Chronic, Brain Injuries, Traumatic
Interventions
Inulin fructooligosaccharide
Dietary Supplement
Lead sponsor
Centre for Neuro Skills
Industry
Eligibility
18 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Bakersfield, California
Conditions
Inflammatory Bowel Disease, Crohn's Disease, Ulcerative Colitis
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Up to 20 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
2
States / cities
Bethesda, Maryland • Falls Church, Virginia