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ClinicalTrials.gov public records Last synced Oct 19, 2026, 3:41 PM EDT

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Showing 241–264 of 310 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Stool collection Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Stool Microbiome Using HyGIeaCare Prep

NCT04264923
View directory record Official record
Conditions
Stool Microbiome
Interventions
HyGIeaCare Prep
Other
Lead sponsor
HyGIeaCare, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 31, 2020 · Synced Oct 19, 2026, 3:41 PM EDT
Recruiting No phase listed Observational

Collection of Information to Better Understand Young Onset Colorectal Cancer

NCT04489238
View directory record Official record
Conditions
Colorectal Cancer, Colorectal Carcinoma
Interventions
Risk Factor Questionnaire
Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
1,366 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
8
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

CVD 37000: Immunity and Microbiome Studies at Intestinal and Systemic Sites in Ty21a Vaccinated Adults

NCT03970304
View directory record Official record
Conditions
Typhoid Vaccination
Interventions
Vivotif Typhoid Oral Vaccine
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Completed Phase 2 Interventional Results available

Fecal Microbiota Transplant (FMT) in Melanoma Patients

NCT03341143
View directory record Official record
Conditions
Melanoma
Interventions
Fecal Microbiota Transplant with Pembrolizumab
Drug
Lead sponsor
Zarour, Hassane, MD
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 30, 2024 · Synced Oct 19, 2026, 3:41 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Pathobiomes in Gut of Critically Ill Patients

NCT06822465
View directory record Official record
Conditions
Pseudomonas Aeruginosa
Interventions
P. aeruginosa using in vitro and in vivo assays
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 85 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Hyde Park, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 2, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Completed No phase listed Observational

Collection of Blood, Urine, and Stool to Monitor MetastaticColorectal Cancers

NCT03563651
View directory record Official record
Conditions
Stage III Colorectal Cancer AJCC v8, Stage IIIA Colorectal Cancer AJCC v8, Stage IIIB Colorectal Cancer AJCC v8, Stage IIIC Colorectal Cancer AJCC v8, Stage IV Colorectal Cancer AJCC v8, Stage IVA Colorectal Cancer AJCC v8, Stage IVB Colorectal Cancer AJCC v8, Stage IVC Colorectal Cancer AJCC v8
Interventions
Biopsy, Biospecimen Collection, Laboratory Biomarker Analysis, Questionnaire Administration
Procedure · Other
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 18, 2021 · Synced Oct 19, 2026, 3:41 PM EDT
Recruiting Phase 2 Interventional

Robotic Cytoreduction and Hyperthermic Intraperitoneal Chemotherapy for Treatment of Gastric Cancer With Limited Peritoneal Metastasis, ROBO-CHIP Study

NCT05753306
View directory record Official record
Conditions
Gastric Adenocarcinoma, Gastroesophageal Junction Adenocarcinoma, Metastatic Malignant Neoplasm in the Peritoneum
Interventions
Cisplatin, Computed Tomography, Gastrectomy, Magnetic Resonance Imaging, Positron Emission Tomography, Questionnaire Administration, Paclitaxel, Hyperthermic Intraperitoneal Chemotherapy
Drug · Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Screening More Patients for Colorectal Cancer Through Adapting and Refining Targeted Evidence-Based Interventions in Rural Settings, SMARTER CRC

NCT04890054
View directory record Official record
Conditions
Colorectal Carcinoma
Interventions
Fecal Immunochemical Test, Interview, Patient Navigation
Other · Behavioral
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
5,696 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 19, 2025 · Synced Oct 19, 2026, 3:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

COVID-19: Human Epidemiology and Response to SARS-CoV-2

NCT04375761
View directory record Official record
Conditions
Coronavirus Disease 2019 (COVID-19), SARS-CoV-2
Interventions
Collection of Biological Samples, Symptom and Exposure Surveys
Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
Not listed
Enrollment
5,599 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
20
States / cities
Aurora, Colorado • Washington D.C., District of Columbia • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Oct 19, 2026, 3:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

An Evaluation of a Multi-target Stool DNA (Mt-sDNA) Test, Cologuard, for CRC Screening in Individuals Aged 45-49 and at Average Risk for Development of Colorectal Cancer: Act Now

NCT03728348
View directory record Official record
Conditions
Colorectal Cancer
Interventions
mt-sDNA screening test, Colonoscopy
Diagnostic Test · Procedure
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
45 Years to 49 Years
Enrollment
983 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
39
States / cities
Phoenix, Arizona • Camarillo, California • Laguna Hills, California + 35 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2021 · Synced Oct 19, 2026, 3:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized Controlled Trial Investigating if Antibiotic Use in the First 48 Hours of Life Adversely Impacts the Preterm Infant Microbiome

NCT02477423
View directory record Official record
Conditions
Premature Birth of Newborn, Enterocolitis, Necrotizing
Interventions
Ampicillin, Gentamicins, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
Up to 6 Hours
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 19, 2026, 3:41 PM EDT
Active, not recruiting Phase 1 Interventional

Stool Transplant to Control Treatment-related Diarrhea

NCT04883762
View directory record Official record
Conditions
Fecal Microbiota Transplantation (FMT)
Interventions
Fecal Microbiota Transplantation (FMT)
Biological
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Active, not recruiting No phase listed Observational

Exploring Relevant Immune-based Biomarkers and Circulating Tumor Cells During Treatment With Immunotherapy in Genitourinary Malignancies (CTC Immune Based Biomarkers)

NCT02978118
View directory record Official record
Conditions
Carcinoma, Renal Cell, Carcinoma, Urothelial
Interventions
Immune cell and CTC detection procedures
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2028
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Enhancing Prevention Pathways Toward Tribal Colorectal Health

NCT02882620
View directory record Official record
Conditions
Colorectal Neoplasm
Interventions
High Intensity (Group 1), Medium Intensity (Group 2), Reference Group (Group 3)
Behavioral
Lead sponsor
University of New Mexico
Other
Eligibility
45 Years to 75 Years
Enrollment
1,788 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2024
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced Oct 19, 2026, 3:41 PM EDT
Suspended Not applicable Interventional

Effects of Home Gluten Immunogenic Peptide Testing on Children With Celiac Disease

NCT03462979
View directory record Official record
Conditions
Celiac Disease, Gluten Sensitivity, Gluten Enteropathy, Gastrointestinal Disease, Digestive System Disease, Diet Modification, Intestinal Disease, Malabsorption Syndromes, Patient Compliance, Diagnostic Self Evaluation, Quality of Life
Interventions
Immunochromatographic lateral flow test
Device
Lead sponsor
Boston Children's Hospital
Other
Eligibility
6 Years to 18 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Oct 19, 2026, 3:41 PM EDT
Recruiting No phase listed Observational

Norris ORIEN Total Cancer Care

NCT02970045
View directory record Official record
Conditions
Cancer Risk, Malignant Neoplasm
Interventions
Biospecimen Collection, Evaluation of Cancer Risk Factors, Medical Chart Review, Quality-of-Life Assessment, Questionnaire Administration
Procedure · Other
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
10,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2037
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Recruiting No phase listed Observational

Predictive Biomarkers for Pneumonitis After Chemoradiotherapy and Immunotherapy in Patients With Non-small Cell Lung Cancer

NCT04913311
View directory record Official record
Conditions
Lung Non-Small Cell Carcinoma
Interventions
Biospecimen Collection, Bronchoscopy with Bronchoalveolar Lavage, Chemoradiotherapy, Computed Tomography, Diagnostic Laboratory Biomarker Analysis, Immune Checkpoint Inhibitor, Nasal Wash and Collection, Quality-of-Life Assessment, Questionnaire Administration, Spirometry
Procedure · Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Active, not recruiting No phase listed Observational

Genetic Analysis in Blood and Tumor Samples From Patients With Advanced or Metastatic Estrogen Receptor Positive and HER2 Negative Breast Cancer Receiving Palbociclib and Endocrine Therapy

NCT03281902
View directory record Official record
Conditions
Advanced Breast Carcinoma, Locally Advanced Breast Carcinoma, Metastatic Breast Carcinoma, Recurrent Breast Carcinoma, Stage III Breast Cancer AJCC v7, Stage IIIA Breast Cancer AJCC v7, Stage IIIB Breast Cancer AJCC v7, Stage IIIC Breast Cancer AJCC v7, Stage IV Breast Cancer AJCC v6 and v7
Interventions
Biopsy, Biospecimen Collection, Laboratory Biomarker Analysis
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2028
U.S. locations
3
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Establishing a Diagnostic and Therapeutic Index in Autism Spectrum Disorder (ASD) and Fragile X Syndrome

NCT04869930
View directory record Official record
Conditions
Autism Spectrum Disorder, Fra(X) Syndrome
Interventions
specimen collection
Other
Lead sponsor
Nova Mentis Life Science Corp
Industry
Eligibility
6 Months to 21 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Oct 13, 2021 · Synced Oct 19, 2026, 3:41 PM EDT
Recruiting No phase listed Observational

The Role of Brain-Bone Marrow-Gut Interaction Following Major Trauma

NCT06606119
View directory record Official record
Conditions
Trauma Injury, Trauma, Critical Illness, Microbiome, Chronic Anemia, Acute Blood Loss Anemia
Interventions
Data and tissue collection
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 100 Years
Enrollment
275 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
3
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 6, 2026 · Synced Oct 19, 2026, 3:41 PM EDT
Recruiting No phase listed Observational

Longitudinal Evaluation of Microbial and Host Signatures During Immunotherapy for Lung Cancer

NCT04063501
View directory record Official record
Conditions
Lung Cancer
Interventions
Bronchoscopy, Research Procedures
Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 100 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Oct 19, 2026, 3:41 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Gastric Bacterial Colonization of Preterm Neonates

NCT05385939
View directory record Official record
Conditions
Microbial Colonization, Preterm Birth
Interventions
Observational
Other
Lead sponsor
Christiana Care Health Services
Other
Eligibility
1 Week to 6 Months
Enrollment
122 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated May 23, 2022 · Synced Oct 19, 2026, 3:41 PM EDT
Withdrawn Phase 2 Interventional

Botanical Tincture for Symptoms of Irritable Bowel Syndrome

NCT03923322
View directory record Official record
Conditions
Irritable Bowel Syndrome Characterized by Constipation
Interventions
Botanical Tincture, Placebo
Drug · Other
Lead sponsor
Stamford Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Stamford, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 29, 2024 · Synced Oct 19, 2026, 3:41 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Microbicide Safety and Acceptability in Young Men

NCT01283360
View directory record Official record
Conditions
High Risk MSM, HIV Negative, 18-30 Years of Age
Interventions
HEC Placebo Gel, Tenofovir 1% Gel
Other · Drug
Lead sponsor
CONRAD
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
249 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
2
States / cities
Boston, Massachusetts • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 28, 2015 · Synced Oct 19, 2026, 3:41 PM EDT