Independent directory Public ClinicalTrials.gov records United States
Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 20, 2026, 11:51 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 49–72 of 1,014 matching trials from the live ClinicalTrials.gov search.
Conditions
Gastrointestinal Complication, Intestinal Obstruction, Gastroschisis, Hirschsprung Disease, Omphalocele, Midgut Volvulus
Interventions
Standard of Care, Exclusive Human Milk
Dietary Supplement
Lead sponsor
Seattle Children's Hospital
Other
Eligibility
0 Days to 55 Years
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Completed No phase listed Observational Accepts healthy volunteers

Neonatal Microbiome Validity Study

NCT02655250
Conditions
Gut Microbiome
Interventions
Microbiome
Other
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
Not listed
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Buffalo, New York
Conditions
Cystic Fibrosis, Dysbiosis
Interventions
Vitamin D3, Placebo vitamin D3, Inulin, Placebo Inulin
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Atlanta, Georgia
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Autologous Fecal Therapy

NCT02046525
Conditions
Infectious Disease of Digestive Tract
Interventions
Autologous fecal microbiota therapy, Placebo
Biological · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
St Louis, Missouri
Completed Phase 4 Interventional Accepts healthy volunteers

A Study of Virtually Supervised Mouthwash and Interdental Brushes

NCT05756673
Conditions
Healthy
Interventions
Colgate Cavity Protection Toothpaste, LISTERINE ZERO Alcohol Mouthwash COOL MINT, LISTERINE COOL MINT Antiseptic Mouthwash, TePe Original Interdental Brush
Drug · Device
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
18 Years and older
Enrollment
292 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Fort Wayne, Indiana
Recruiting Not applicable Interventional Accepts healthy volunteers

Gut Kidney Axis in Enteric Hyperoxaluria

NCT05124886
Conditions
Enteric Hyperoxaluria
Interventions
Moderately High Oxalate (MOx) Diet
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 80 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
New York, New York
Active, not recruiting Not applicable Interventional

Probiotics in Adults With Rheumatoid Arthritis

NCT07304505
Conditions
Rheumatoid Arthritis (RA)
Interventions
Align Extra Strength Probiotic Supplement
Dietary Supplement
Lead sponsor
Ancilia Biosciences
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Breast Cancer, HER-2 Positive Breast Cancer
Interventions
Resistant Potato Starch, Placebo control
Dietary Supplement
Lead sponsor
University of Vermont Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2031
U.S. locations
1
States / cities
Burlington, Vermont
Conditions
Male Infertility, Male Hypogonadism
Interventions
Hormone replacement therapy
Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older · Male only
Enrollment
150 participants
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Alpha 1 Antitrypsin Deficiency, AATD
Interventions
Not listed
Lead sponsor
University of Pittsburgh
Other
Eligibility
40 Years to 80 Years
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
9
States / cities
Tucson, Arizona • San Francisco, California • Denver, Colorado + 6 more
Conditions
Stress Physiology
Interventions
Probiotic, Prebiotic, Placebo
Dietary Supplement · Other
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
17 Years to 39 Years
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Natick, Massachusetts
Completed No phase listed Observational Accepts healthy volunteers

Metabolome and Microbiomic in Fecal Samples

NCT00938028
Conditions
Infant
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
12 Months to 20 Months
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Congenital Heart Disease (CHD)
Interventions
2 mL SunButyrate-TG, Placebo, 4 mL SunButyrate-TG
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
1 Month to 3 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Omaha, Nebraska
Conditions
Microbiome
Interventions
Cleanser, Cleanser and Lotion
Other
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
3 Months to 6 Months
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Skillman, New Jersey
Conditions
Parkinson Disease
Interventions
Standard of care + Mediterranean diet (intervention), Standard of care (control)
Other
Lead sponsor
University of Florida
Other
Eligibility
40 Years to 85 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Gainesville, Florida
Conditions
Heartburn
Interventions
Panosyl-isomaltooligosaccharides (PIMO) 1g (1.4 ml), Placebo 1.4 ml
Dietary Supplement · Other
Lead sponsor
Microbiome Health Sciences
Industry
Eligibility
18 Years to 75 Years
Enrollment
211 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Manassas, Virginia
Conditions
Gastrointestinal Tolerance
Interventions
Inulin, soluble corn fiber
Other
Lead sponsor
Tate & Lyle
Industry
Eligibility
3 Years to 9 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Addison, Illinois
Conditions
Low-grade Oral Dysplasia
Interventions
Probiotic oral lozenges, Standard of care for oral dysplasia
Biological · Other
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
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
Conditions
Rheumatoid Arthritis
Interventions
Short Chain Fatty Acids (SCFA) Dietary Supplement
Dietary Supplement
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
New York, New York
Withdrawn No phase listed Observational Accepts healthy volunteers

Study of the Human Skin Microbiome

NCT00764608
Conditions
Healthy
Interventions
Not listed
Lead sponsor
Southwest Regional Wound Care Center
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Lubbock, Texas
Conditions
Uveitis
Interventions
Not listed
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
13 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Bethesda, Maryland
Terminated No phase listed Observational Accepts healthy volunteers

Vaccine Observation to Include All Communities for Equitable Science

NCT04770649
Conditions
Vaccine Response Impaired, Vaccine Adverse Reaction
Interventions
COVID-19 vaccine
Biological
Lead sponsor
Persephone Biosciences
Industry
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Diego, California
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Lean Beef Consumption on Cardiometabolic Health and Gut Microbiome

NCT06433115
Conditions
Diet Intervention
Interventions
Lean (≥90%) Grass-Fed Beef, Lean (≥90%) Grain-Fed Beef, Plant-Based Meat
Other
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Columbia, Missouri