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ClinicalTrials.gov public records Last synced Oct 21, 2026, 10:43 PM EDT

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

Showing 97–120 of 251 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Stool sample Clear all
Not yet recruiting Early Phase 1 Interventional

Pilot Trial of Xylitol for C. Difficile De-Colonization in Patients With Inflammatory Bowel Disease

NCT06799039
View directory record Official record
Conditions
Inflammatory Bowel Disease (IBD), Clostridioides Difficile Infection
Interventions
Xylitol
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Oct 21, 2026, 10:43 PM EDT
Completed No phase listed Observational

Immuno-Oncology Database and Bioregistry

NCT04656873
View directory record Official record
Conditions
Malignancy, Immune System Diseases, Autoimmune Diseases
Interventions
Biospecimen Collection, Medical Chart Review, Questionnaires/Surveys
Procedure · Other
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Oct 21, 2026, 10:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Multilevel Intervention Based on Colorectal Cancer (CRC) and Cervical Cancer Self-screening in Rural, Segregated Areas

NCT04471194
View directory record Official record
Conditions
Colorectal Cancer Screening, Cervical Cancer Screening
Interventions
Self-sampling HPV test, Fecal occult blood test
Diagnostic Test
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
50 Years to 65 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 13, 2022 · Synced Oct 21, 2026, 10:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Community Colorectal Cancer Awareness, Research, Education & Screening (C-CARES)

NCT03906110
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Community Colorectal Cancer Awareness, Research, Education & Screening (C-CARES) Materials, Contact Message, Personalized One on One Education, Fecal Immunochemical Test (FIT)
Behavioral · Diagnostic Test
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
50 Years to 75 Years
Enrollment
327 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Apr 20, 2023 · Synced Oct 21, 2026, 10:43 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Modulation of Type 1 Diabetes Susceptibility Through the Use of Probiotics

NCT03423589
View directory record Official record
Conditions
Type1diabetes, Type1 Diabetes Mellitus
Interventions
VSL#3
Dietary Supplement
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
5 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced Oct 21, 2026, 10:43 PM EDT
Completed No phase listed Observational

Sample Collection Study to Evaluate DNA Markers in Subjects With Inflammatory Bowel Disease (IBD)

NCT02503696
View directory record Official record
Conditions
Inflammatory Bowel Disease, Colorectal Neoplasms, Digestive System Diseases, Colonic Diseases, Colorectal Cancer
Interventions
Stool Collection Kit
Device
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
18 Years to 84 Years
Enrollment
697 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
27
States / cities
Dothan, Alabama • La Jolla, California • Mission Hills, California + 24 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2016 · Synced Oct 21, 2026, 10:43 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Human Skin and Gut Mycobiome and Bacteriome Comprehensive Registry

NCT05196061
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Questionnaire, Stool sample, Skin swab, Oral rinse
Other
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2030
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 21, 2026, 10:43 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 21, 2026, 10:43 PM EDT
Active, not recruiting No phase listed Observational

Hypoglycemia and the Gut Microbiome

NCT03385707
View directory record Official record
Conditions
Hypoglycemia
Interventions
Not listed
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 6, 2026 · Synced Oct 21, 2026, 10:43 PM EDT
Completed Not applicable Interventional

Vitamin D and Microbiota in Cystic Fibrosis

NCT02589444
View directory record Official record
Conditions
Vitamin D Deficiency, Cystic Fibrosis
Interventions
High-Dose Vitamin D3, Stool Sample, Sputum Sample, Sham Comparator, Blood draw
Dietary Supplement · Other · Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Oct 21, 2026, 10:43 PM EDT
Recruiting Phase 1 Interventional

PSCA-Targeting CAR-T Cells Plus or Minus Radiation for the Treatment of Patients With PSCA+ Metastatic Castration-Resistant Prostate Cancer

NCT05805371
View directory record Official record
Conditions
Castration-Resistant Prostate Carcinoma, Metastatic Prostate Carcinoma, Stage IVB Prostate Cancer AJCC v8
Interventions
Autologous Anti-PSCA-CAR-4-1BB/TCRzeta-CD19t-expressing T-lymphocytes, Biopsy, Biospecimen Collection, Bone Scan, Computed Tomography, External Beam Radiation Therapy, Leukapheresis, Lymphodepletion Therapy
Biological · Procedure · Radiation
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older · Male only
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 21, 2026, 10:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Microbiome Analysis of Constipated Versus Non-constipation Patients

NCT04106232
View directory record Official record
Conditions
Rome IV Functional Constipation
Interventions
No change in procedure except for specimen collection throughout procedure
Other
Lead sponsor
HyGIeaCare, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
3
States / cities
Flowood, Mississippi • Cincinnati, Ohio • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 27, 2023 · Synced Oct 21, 2026, 10:43 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 21, 2026, 10:43 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Advancing Prevention of Pulmonary Fibrosis

NCT04564183
View directory record Official record
Conditions
IPF, Pulmonary Fibrosis, ILD
Interventions
Sample collection, Questionnaires, High resolution CT scan of the chest, Pulmonary Function Test
Other · Radiation · Diagnostic Test
Lead sponsor
University of Colorado, Denver
Other
Eligibility
40 Years to 75 Years
Enrollment
800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 25, 2025 · Synced Oct 21, 2026, 10:43 PM EDT
Recruiting No phase listed Observational

Biospecimen Collection to Identify Gene Mutations for High Risk Pancreatic Cancer in Pediatric Patients, INSPPIRE 2 Study

NCT06651580
View directory record Official record
Conditions
Chronic Pancreatitis, Exocrine Pancreas Carcinoma, Recurrent Acute Pancreatitis
Interventions
Biospecimen Collection, Quality-of-Life Assessment, Questionnaire Administration
Procedure · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Up to 17 Years
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
22
States / cities
Los Angeles, California • Oakland, California • Palo Alto, California + 17 more
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 21, 2026, 10:43 PM EDT
Terminated Not applicable Interventional

MOlecular BIomarkers and Adherent and Invasive Escherichia Coli (AIEC) Detection Study In Crohn's Disease Patients

NCT02882841
View directory record Official record
Conditions
Crohn's Disease
Interventions
Biopsies, stool and blood collection
Other
Lead sponsor
Enterome
Industry
Eligibility
18 Years to 75 Years
Enrollment
143 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Oct 21, 2026, 10:43 PM EDT
Completed No phase listed Observational

Fecal Calprotectin Collection Protocol

NCT03143517
View directory record Official record
Conditions
Inflammatory Bowel Diseases, Irritable Bowel Syndrome, Ulcerative Colitis, Crohn Disease, Indeterminate Colitis, Chronic Diarrhea, Celiac Disease, Diverticulitis, Abdominal Pain, Distension, Weight Loss, Food Intolerance, Constipation
Interventions
Stool collection
Diagnostic Test
Lead sponsor
DiaSorin Inc.
Industry
Eligibility
4 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
13
States / cities
Dothan, Alabama • Little Rock, Arkansas • Mission Hills, California + 10 more
Source: ClinicalTrials.gov public record
Updated Feb 7, 2019 · Synced Oct 21, 2026, 10:43 PM EDT
Recruiting No phase listed Observational

Biospecimen and Medical Data Collection and Tumor Biopsy in Creating Research Tissue Registry in Patients With Inflammatory or Invasive Breast Cancer

NCT00477100
View directory record Official record
Conditions
Inflammatory Breast Carcinoma, Invasive Breast Carcinoma, Second Primary Malignant Neoplasm
Interventions
Biospecimen Collection, Interview, Medical Chart Review, Questionnaire Administration
Procedure · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
1,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2030
U.S. locations
10
States / cities
Gilbert, Arizona • La Jolla, California • Greeley, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 21, 2026, 10:43 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Sample Collection From Healthy Volunteers for Assay Optimization

NCT03538600
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
3 Years to 80 Years
Enrollment
600 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2043
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 21, 2026 · Synced Oct 21, 2026, 10:43 PM EDT
Completed No phase listed Observational

Comparison of Gut Microbiota, Inflammation and Symptoms Following Allogeneic HSCT

NCT02398708
View directory record Official record
Conditions
Graft vs Host Disease, Graft Versus Host Disease, Hematopoietic Stem Cell Transplantation, Peripheral Blood Stem Cell Transplantation
Interventions
Questionnaires, Blood Sample, Stool Sample, Clinical data
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 25, 2019 · Synced Oct 21, 2026, 10:43 PM EDT
Active, not recruiting Phase 2 Interventional Results available

TRADE: Dose Escalation Tolerability of Abemaciclib in HR+ HER2- Early Stage Breast Cancer

NCT06001762
View directory record Official record
Conditions
Breast Cancer, Early-stage Breast Cancer, High Risk Breast Carcinoma
Interventions
Abemaciclib, Tamoxifen, Anastrozole, Letrozole, Exemestane, LHRH Agonist
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
12
States / cities
Stamford, Connecticut • Brewer, Maine • Scarborough, Maine + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2026 · Synced Oct 21, 2026, 10:43 PM EDT
Completed No phase listed Observational

Gut Microbiota in Intestinal Barrier Damage in Acute Leukemia Patients Undergoing Inpatient Induction

NCT03316456
View directory record Official record
Conditions
Chemotherapy-Induced Gut Barrier Damage, Acute Leukemia
Interventions
Observational: Stool Sample Collection, Observational: Blood Sample Collection, Observational: Urine Sample Collection
Diagnostic Test
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
18 Years to 99 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 6, 2019 · Synced Oct 21, 2026, 10:43 PM EDT
Not listed No phase listed Observational

Stool Sample Collection Study

NCT06294873
View directory record Official record
Conditions
Colorectal Cancer
Interventions
A screening device for the detection of colorectal and other aerodigestive tract cancers
Diagnostic Test
Lead sponsor
Innovis LLC
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
3
States / cities
Anaheim, California • Ocala, Florida • Cordova, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 6, 2024 · Synced Oct 21, 2026, 10:43 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Microbiome and the Gut-Brain Axis

NCT02693327
View directory record Official record
Conditions
Mental Disorder
Interventions
Biological Sample, Blood Sample
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
2
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 15, 2018 · Synced Oct 21, 2026, 10:43 PM EDT