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ClinicalTrials.gov public records Last synced Sep 30, 2026, 1:27 PM EDT

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Showing 25–48 of 179 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Stool and blood collection Clear all
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 Sep 30, 2026, 1:27 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 Sep 30, 2026, 1:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Meals Study for Amyotrophic Lateral Sclerosis and Parkinson's Disease

NCT07625605
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis (ALS), Parkinson's Disease (PD)
Interventions
The MIND diet
Behavioral
Lead sponsor
The University of Tennessee, Knoxville
Other
Eligibility
30 Years and older
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
3
States / cities
Elizabethton, Tennessee • Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Recruiting No phase listed Observational

Clinical Microbial Species & Antibiotic Resistance ID in ED Patients Presenting With Infection - is Rapid ID Possible & Accurate?

NCT01904188
View directory record Official record
Conditions
Sepsis, Systemic Inflammatory Response Syndrome, Infection Mixed, Infection, Bacterial, Infection, Fungal, Infection, Coronavirus, Antibiotic Resistance Genes, Human Genome Analysis
Interventions
Gene Z or other rapid diagnostic techniques developed in our lab (as of 2018 not using Gene Z - now using In-Dx along with other developed techniquesregularly)
Device
Lead sponsor
Michigan State University
Other
Eligibility
18 Years and older
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2032
U.S. locations
2
States / cities
Lansing, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Completed No phase listed Observational

Blood and Stool Sample Collection in Subjects With a Diagnosis of Colorectal Cancer or Colorectal Lesion: Act Fast

NCT03789162
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Not listed
Lead sponsor
Exact Sciences Corporation
Industry
Eligibility
40 Years and older
Enrollment
850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
44
States / cities
Phoenix, Arizona • Canoga Park, California • Chula Vista, California + 39 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2025 · Synced Sep 30, 2026, 1:27 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 Sep 30, 2026, 1:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Audio and Video Brochures for Increasing Colorectal Cancer Screening Among Adults Living in Appalachia

NCT05810714
View directory record Official record
Conditions
Colorectal Carcinoma
Interventions
Best Practice, Fecal Immunochemical Test, Health Education, Scheduled Notification, Survey Administration
Other · Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
50 Years to 64 Years
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 5, 2023 · Synced Sep 30, 2026, 1:27 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Investigating the Genetic and Phenotypic Presentation of Ataxia and Nucleotide Repeat Diseases

NCT04529252
View directory record Official record
Conditions
Spinocerebellar Ataxias, Cerebellar Ataxia, Nucleotide Repeat Disease
Interventions
Specimen collection
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2026
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Recruiting No phase listed Observational

Fatigue and Molecular Mechanisms in Cancer Patients Receiving CCRT

NCT06633224
View directory record Official record
Conditions
Cancer, Thoracic Cancer, Gynecologic Cancer, Head and Neck Cancer, Gastrointestinal Cancer
Interventions
Blood Specimen Collection, Stool Specimen Collection, Quality of Life (QOL) Questionnaires
Procedure · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Stress & Resilience Study

NCT06063174
View directory record Official record
Conditions
Stress, Stress, Psychological, Stress, Physiological, Stress, Emotional, Stress Reaction
Interventions
Education Program, Think Well Program, Be Well Program, Eat Well Program, Sleep Well Program, Move Well Program
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
712 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 15, 2025 · Synced Sep 30, 2026, 1:27 PM EDT
Recruiting Not applicable Interventional

Sustained Oral Fiber Supplementation for Patients Undergoing Treatment for Hematological Malignancies

NCT04829136
View directory record Official record
Conditions
Hematopoietic and Lymphatic System Neoplasm
Interventions
Kate Farms 1.0, Standard of Care Nutritional Support, Survey Administration, Dietary Supplement, Biospecimen Collection, Electronic Health Record Review, Fiber and Dietary Assessments
Dietary Supplement · Other · Procedure
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Variability in Microbial Response to Dietary Fiber

NCT06023940
View directory record Official record
Conditions
Microbial Colonization
Interventions
High fiber
Dietary Supplement
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
45 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 24, 2024 · Synced Sep 30, 2026, 1:27 PM EDT
Terminated Phase 2 Interventional

Investigational Microbiota Restoration Therapeutic for Hepatic Encephalopathy

NCT04155099
View directory record Official record
Conditions
Hepatic Encephalopathy, Cirrhosis, Liver
Interventions
RBX7455, Placebo
Biological
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years to 75 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Jefferson, Louisiana
Source: ClinicalTrials.gov public record
Updated Oct 3, 2023 · Synced Sep 30, 2026, 1:27 PM EDT
Completed No phase listed Observational

The Effect of the Microbiome on Immune Checkpoint Inhibitor Response in Melanoma Patients

NCT05102773
View directory record Official record
Conditions
Clinical Stage IV Cutaneous Melanoma AJCC v8, Pathologic Stage IV Cutaneous Melanoma AJCC v8
Interventions
Biospecimen Collection, Computed Tomography, Laboratory Biomarker Analysis, Questionnaire Administration
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 24, 2023 · Synced Sep 30, 2026, 1:27 PM EDT
Completed Phase 2 Interventional Results available

Atezolizumab and CYT107 in Treating Participants With Locally Advanced, Inoperable, or Metastatic Urothelial Carcinoma

NCT03513952
View directory record Official record
Conditions
Advanced Bladder Urothelial Carcinoma, Advanced Ureter Urothelial Carcinoma, Metastatic Bladder Urothelial Carcinoma, Metastatic Renal Pelvis Urothelial Carcinoma, Metastatic Ureter Urothelial Carcinoma, Metastatic Urethral Urothelial Carcinoma, Metastatic Urothelial Carcinoma, Recurrent Bladder Urothelial Carcinoma, Recurrent Renal Pelvis Urothelial Carcinoma, Recurrent Ureter Urothelial Carcinoma, Recurrent Urethral Urothelial Carcinoma, Stage III Bladder Cancer AJCC v8, Stage III Renal Pelvis Cancer AJCC v8, Stage III Ureter Cancer AJCC v8, Stage III Urethral Cancer AJCC v8, Stage IV Bladder Cancer AJCC v8, Stage IV Renal Pelvis Cancer AJCC v8, Stage IV Ureter Cancer AJCC v8, Stage IV Urethral Cancer AJCC v8, Stage IVA Bladder Cancer AJCC v8, Stage IVB Bladder Cancer AJCC v8, Unresectable Bladder Urothelial Carcinoma, Unresectable Renal Pelvis Urothelial Carcinoma, Unresectable Ureter Urothelial Carcinoma
Interventions
Atezolizumab, Biopsy, Biospecimen Collection, Computed Tomography, Glycosylated Recombinant Human Interleukin-7, Laboratory Biomarker Analysis, Magnetic Resonance Imaging, Positron Emission Tomography and Computed Tomography Scan
Drug · Procedure · Biological + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
9
States / cities
Riverside, California • Tampa, Florida • Honolulu, Hawaii + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2024 · Synced Sep 30, 2026, 1:27 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Impact of COVID-19 on Maternal and Neonatal Outcomes

NCT05197621
View directory record Official record
Conditions
COVID-19, Pregnancy; Infection
Interventions
mRNA COVID-19 vaccine (Pfizer or Moderna)
Biological
Lead sponsor
Johns Hopkins University
Other
Eligibility
14 Years to 55 Years · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

AI-EMERGE: Development and Validation of a Multi-analyte, Blood-based Colorectal Cancer Screening Test

NCT03688906
View directory record Official record
Conditions
Colo-rectal Cancer, Cancer Colon, Cancer, Rectum, Neoplasms,Colorectal, Polyps, Polyp of Colon, Adenoma, Adenoma Colon
Interventions
Not listed
Lead sponsor
Freenome Holdings Inc.
Industry
Eligibility
18 Years and older
Enrollment
3,275 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
29
States / cities
Huntsville, Alabama • Chandler, Arizona • Tucson, Arizona + 25 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2022 · Synced Sep 30, 2026, 1:27 PM EDT
Recruiting Not applicable Interventional

Engagement of American Indians of Southwestern Tribal Nations in Cancer Genome Sequencing

NCT06207864
View directory record Official record
Conditions
Malignant Neoplasm
Interventions
Biospecimen Collection, Return of Results, Survey Administration
Procedure · Other
Lead sponsor
New Mexico Cancer Research Alliance
Other
Eligibility
18 Years and older
Enrollment
1,001 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 30, 2026, 1:27 PM EDT
Recruiting No phase listed Observational

Natural History Study of Patients With Succinic Semialdehyde Dehydrogenase (SSADH) Deficiency

NCT03758521
View directory record Official record
Conditions
Succinic Semialdehyde Dehydrogenase Deficiency
Interventions
Transcranial magnetic stimulation (TMS), Magnetic resonance imaging (MRI), Electroencephalogram (EEG), Bio-specimen Collection
Device · Procedure
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Not listed
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Study of Human Brain-Gut Axis and Gut Microbiome in Patients With Brain Lesions - Repository for Neuroscience Research

NCT06117930
View directory record Official record
Conditions
Malignant Central Nervous System Neoplasm
Interventions
Non-Interventional Study
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 30, 2026, 1:27 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 Sep 30, 2026, 1:27 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Prospective Screening for Pancreatic Ductal Adenocarcinoma in High-Risk Individuals

NCT06122896
View directory record Official record
Conditions
Pancreatic Cancer, Pancreatic Ductal Adenocarcinoma, PDAC, PDAC - Pancreatic Ductal Adenocarcinoma, Pancreatic Neoplasm
Interventions
Screening Blood Tests, Endoscopic Ultrasound, Magnetic Resonance Imaging, Magnetic Resonance Cholangiopancreatography
Other · Diagnostic Test · Combination Product
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2041
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Recruiting Not applicable Interventional

Gut Microbiome and Sex as Risk Factors for Kidney Stones After Bariatric Surgery

NCT04590690
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Special diet
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 130 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Sep 30, 2026, 1:27 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Microbiome and Axial Spondyloarthritis

NCT04713995
View directory record Official record
Conditions
Axial Spondyloarthritis
Interventions
Dietary recommendations
Other
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Jul 8, 2022 · Synced Sep 30, 2026, 1:27 PM EDT