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ClinicalTrials.gov public records Last synced Oct 23, 2026, 6:17 PM EDT

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Showing 577–600 of 913 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Stool Clear all
Withdrawn No phase listed Observational Accepts healthy volunteers

The Influence of Histo-blood Group Antigen Polymorphism on the Composition of the Microbiota

NCT02349932
View directory record Official record
Conditions
Microbiota Analysis in Healthy Subjects
Interventions
Healthy Adults
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 60 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 13, 2019 · Synced Oct 23, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ellagic Acid, Urolithin and Colonic Microbial Communities Affected by Walnut Consumption

NCT04066816
View directory record Official record
Conditions
Colo-rectal Cancer, Colon Cancer, Diet Habit
Interventions
Walnuts
Other
Lead sponsor
UConn Health
Other
Eligibility
50 Years to 65 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 26, 2021 · Synced Oct 23, 2026, 6:17 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Lactobacillus Rhamnosus GG (LGG) on Infant Colic

NCT01279265
View directory record Official record
Conditions
Colic, Inflammation
Interventions
Nutramigen with Enflora, Nutramigen A+
Dietary Supplement
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
3 Weeks to 3 Months
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 11, 2015 · Synced Oct 23, 2026, 6:17 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Fresh, Frozen or Lyophilized Fecal Microbiota Transplantation for Multiple Recurrent C. Difficile Associated Diarrhea

NCT02318992
View directory record Official record
Conditions
Recurrent C. Difficile Associated Diarrhea
Interventions
Fecal Microbiota
Biological
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 23, 2024 · Synced Oct 23, 2026, 6:17 PM EDT
Completed No phase listed Observational

Cytokines and Genes in Therapeutic Response in Crohn's Disease

NCT03266471
View directory record Official record
Conditions
Inflammatory Bowel Diseases
Interventions
Baseline blood sample, Baseline intestinal biopsies, Crohn's disease activity index (CDAI), Post treatment blood sample, Post treatment intestinal biopsies, Baseline stool sample, Post treatment stool sample
Diagnostic Test · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
2
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 14, 2023 · Synced Oct 23, 2026, 6:17 PM EDT
Terminated Phase 2 Interventional Results available

Fecal Microbiota Transplantation (FMT) in Recipients After Allogeneic Hematopoietic Cell Transplantation (HCT)

NCT03720392
View directory record Official record
Conditions
Allogeneic Hematopoietic Cell Transplantation (HCT)
Interventions
FMT, Placebo
Drug
Lead sponsor
Zachariah Michael DeFilipp
Other
Eligibility
18 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 1, 2021 · Synced Oct 23, 2026, 6:17 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Effects of Triphala and VSL#3 Probiotic Supplementation on Stool Microbiome Profiles and Inflammation

NCT03907501
View directory record Official record
Conditions
Human Microbiome
Interventions
Synbiotic, Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of California, San Diego
Other
Eligibility
65 Years and older
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 6, 2023 · Synced Oct 23, 2026, 6:17 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Evaluation of Fecal Microbiome Changes After Antegrade Continence Enema Placement and Initiation of Bowel Flush Regimen

NCT05821309
View directory record Official record
Conditions
Constipation
Interventions
PEG 3350, PEG-3350 with electrolytes, Glycerin
Drug
Lead sponsor
Indiana University
Other
Eligibility
2 Years to 18 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
2
States / cities
Carmel, Indiana • Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 23, 2026, 6:17 PM EDT
Withdrawn No phase listed Observational

An Investigation of the Association Between Helicobacter Pylori Infection and Abdominal Pain in Cystic Fibrosis Patients

NCT00765401
View directory record Official record
Conditions
Cystic Fibrosis, Abdominal Pain, Helicobacter Pylori Infection
Interventions
Not listed
Lead sponsor
Penn State University
Other
Eligibility
5 Years to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 24, 2017 · Synced Oct 23, 2026, 6:17 PM EDT
Terminated Not applicable Interventional Results available

Efficacy of Ostom-i Alert System at Decreasing Dehydration Related Complications

NCT02694757
View directory record Official record
Conditions
Ileostomy - Stoma
Interventions
Ostom-i device
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 19, 2020 · Synced Oct 23, 2026, 6:17 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

ALPCO/Calprotectin CLIA Assay: Expected Values of Calprotectin in Healthy Subjects

NCT07089420
View directory record Official record
Conditions
IBD (Inflammatory Bowel Disease), IBS - Irritable Bowel Syndrome, Crohn Disease (CD), UC - Ulcerative Colitis
Interventions
ALPCO Calprotectin CLIA
Device
Lead sponsor
American Laboratory Products Company
Industry
Eligibility
22 Years and older
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Salem, New Hampshire
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Oct 23, 2026, 6:17 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Trial of CM-AT in Children With Autism With All Levels of FCT (The Blum Study)

NCT02410902
View directory record Official record
Conditions
Autism
Interventions
CM-AT, PLACEBO
Drug
Lead sponsor
Curemark
Industry
Eligibility
3 Years to 8 Years
Enrollment
190 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
31
States / cities
Phoenix, Arizona • Tucson, Arizona • Little Rock, Arkansas + 28 more
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Oct 23, 2026, 6:17 PM EDT
Recruiting Phase 2 Interventional

Pilot Trial of Fecal Microbiota Transplantation for Lymphoma Patients Receiving Axicabtagene Ciloleucel Therapy.

NCT06218602
View directory record Official record
Conditions
Lymphoma
Interventions
Fecal Microbiota Transplantation, Chemotherapy, CAR-T Therapy
Drug · Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 23, 2026, 6:17 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Association Between Gut Microbiome and Dietary Determinants and Vaccine Response

NCT05239403
View directory record Official record
Conditions
Influenza
Interventions
Biospecimen Collection, Questionnaire Administration
Procedure · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
74 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 23, 2026, 6:17 PM EDT
Active, not recruiting No phase listed Observational

Strength and Muscle Related Outcomes for Nutrition and Lung Function in CF

NCT05639556
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
BMI and lean mass index from DXA, Anthropometric Measurements, Hand-grip strength, Six-minute walk Test, Sit-to-Stand Test, Short physical performance battery (SPPB), BIA Sub-study, Accelerometry to assess physical activity, Gastrointestinal (GI) and nutrition questionnaires:, Psychosocial questionnaire: PHQ-8, Psychosocial questionnaire: GAD-7, Psychosocial questionnaire: The Treatment Self-Regulation Questionnaire (TSRQ), Psychosocial questionnaire: CF Fatalism Scale, Psychosocial questionnaire: Body Esteem Scale for Adolescents and Adults (BESAA), 12-month Questionnaire, Oral glucose tolerance testing (OGTT), Continuous glucose monitoring (CGM), Chest CT scans (When available within the past 6 months in medical records), Hologic Dual X-Ray Absorptiometry (DXA), Ultrasound Sub-study of assessment of appendage muscles using ultrasound, Psychosocial questionnaire: Hunger Vital Sign questionnaire, Respiratory symptom questionnaire: CRISS, Spirometry, Psychosocial questionnaire: Additional Health Questionnaire, CF Management Questionnaire, Food Frequency Questionnaire
Diagnostic Test · Other · Device
Lead sponsor
Jaeb Center for Health Research
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
23
States / cities
Tucson, Arizona • Little Rock, Arkansas • Atlanta, Georgia + 19 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 23, 2026, 6:17 PM EDT
Active, not recruiting No phase listed Observational

Multi-Organ Screening Recommendations in Patients With Lynch Syndrome

NCT00582296
View directory record Official record
Conditions
Lynch Syndrome
Interventions
questionnaires, telephone interview, optional blood drawn, questionnaires, telephone interview and optional blood drawn
Behavioral
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
1,530 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2026
U.S. locations
8
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 23, 2026, 6:17 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Probiotic Detection and Persistence Study

NCT04065503
View directory record Official record
Conditions
Healthy
Interventions
Probiotic Strains
Biological
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 55 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 19, 2021 · Synced Oct 23, 2026, 6:17 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Mortality Reduction After Oral Azithromycin: Morbidity Study

NCT02048007
View directory record Official record
Conditions
Childhood Mortality
Interventions
Azithromycin, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
1 Month and older
Enrollment
72,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
2
States / cities
San Francisco, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 17, 2021 · Synced Oct 23, 2026, 6:17 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

BM Collection From NICU Infants for Composition

NCT02570698
View directory record Official record
Conditions
Diaper Dermatitis
Interventions
Not listed
Lead sponsor
Kimberly-Clark Corporation
Industry
Eligibility
Up to 30 Weeks
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Aug 18, 2017 · Synced Oct 23, 2026, 6:17 PM EDT
Completed No phase listed Observational

Gut Microbiota And Radiotherapy

NCT02559349
View directory record Official record
Conditions
Lung Tumor
Interventions
Stool Collection
Other
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 6, 2020 · Synced Oct 23, 2026, 6:17 PM EDT
Completed Not applicable Interventional

Prevention of Hepatic Encephalopathy With Mobile Application Based Lactulose Titration

NCT05526404
View directory record Official record
Conditions
Hepatic Encephalopathy
Interventions
Dieta mobile application
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 18, 2023 · Synced Oct 23, 2026, 6:17 PM EDT
Recruiting Phase 2 Interventional

Fecal Microbiome Transplant to Remodel Intestinal Microbiota for Patients With Relapsed or Refractory Lymphoma With Exposure to High-Risk Antibiotics Who Are Receiving Chimeric Antigen Receptor T Cells

NCT07042438
View directory record Official record
Conditions
Recurrent Diffuse Large B-Cell Lymphoma, Recurrent High Grade B-Cell Lymphoma With MYC and BCL2 or BCL6 Rearrangements, Recurrent Transformed Follicular Lymphoma to Diffuse Large B-Cell Lymphoma, Refractory Diffuse Large B-Cell Lymphoma, Refractory High Grade B-Cell Lymphoma With MYC and BCL2 or BCL6 Rearrangements, Refractory Transformed Follicular Lymphoma to Diffuse Large B-Cell Lymphoma
Interventions
Axicabtagene Ciloleucel, Biospecimen Collection, Chemotherapy, Fecal Microbiota Transplantation, Leukapheresis, Placebo Administration
Biological · Procedure · Drug
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Oct 23, 2026, 6:17 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Blood and Stool Sample Collection in Subjects Participating in Colorectal Cancer Screening: Act Bold

NCT03821948
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Not listed
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
40 Years and older
Enrollment
5,131 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
40
States / cities
Tempe, Arizona • Chula Vista, California • Huntington Beach, California + 36 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2020 · Synced Oct 23, 2026, 6:17 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Autologous Fecal Therapy

NCT02046525
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jun 4, 2019 · Synced Oct 23, 2026, 6:17 PM EDT