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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Microbiome analysis Clear all
Terminated No phase listed Observational

Associations Between Chemotherapy-Induced Nausea in Patients With Genitourinary, Sarcoma or Melanoma Cancers and Changes in Gut Microbiome: Potential for Precision Therapeutics

NCT05819827
View directory record Official record
Conditions
Bladder Cancer, Prostate Cancer, Testicular Cancer, Bladder Carcinoma, Genitourinary System Carcinoma, Malignant Testicular Neoplasm, Melanoma, Prostate Carcinoma, Sarcoma
Interventions
Blood and Tissue
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
20 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
3
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 26, 2025 · Synced Sep 3, 2026, 2:42 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 12, 2026 · Synced Sep 3, 2026, 2:42 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers

OAB and the Microbiome

NCT04831801
View directory record Official record
Conditions
Overactive Bladder, Urgency-frequency Syndrome
Interventions
Not listed
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 90 Years · Female only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Fort Lauderdale, Florida • Miami, Florida
Source: ClinicalTrials.gov public record
Updated May 20, 2024 · Synced Sep 3, 2026, 2:42 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Ocular Surface Dry Eye Microbiome

NCT02306668
View directory record Official record
Conditions
Dry Eyes
Interventions
Not listed
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 2, 2014 · Synced Sep 3, 2026, 2:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Lean and Obese: Dietary Inflammation

NCT05327868
View directory record Official record
Conditions
Obesity, Inflammation, Dietary Fat
Interventions
Low Fat Diet (LFD), High Fat Diet (HFD)
Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
50 Years to 79 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 3, 2026, 2:42 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 Aug 31, 2026 · Synced Sep 3, 2026, 2:42 PM EDT
Terminated Phase 2 Interventional

Gluten Free Diet in Diminishing Side Effects Patients With Acute Myeloid Leukemia Undergoing Induction Chemotherapy

NCT03108911
View directory record Official record
Conditions
Acute Myeloid Leukemia
Interventions
Best Practice, Biospecimen Collection, Dietary Intervention, Laboratory Biomarker Analysis
Other · Procedure
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 16, 2017 · Synced Sep 3, 2026, 2:42 PM EDT
Completed No phase listed Observational

Analysis of Inflammation and Microbiome in Patients With Sinusitis and Asthma

NCT02548598
View directory record Official record
Conditions
Asthma, Chronic Rhinosinusitis
Interventions
Endoscopic sinus surgery
Procedure
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 2, 2021 · Synced Sep 3, 2026, 2:42 PM EDT
Recruiting Not applicable Interventional

Virtual Home-based Exercise Intervention (RISE) to Improve Cancer-Related Cognitive Impairment and Gut Microbiome in Adolescent and Young Adult Brain Tumor Survivors

NCT06799481
View directory record Official record
Conditions
Cancer-related Cognitive Dysfunction, Primary Brain Neoplasm
Interventions
Aerobic Exercise, Behavioral Intervention, Follow-Up, Internet-Based Intervention, Medical Device Usage and Evaluation, Questionnaire Administration, Resistance Training
Other · Behavioral · Procedure
Lead sponsor
Emory University
Other
Eligibility
15 Years to 39 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Atlanta, Georgia • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced Sep 3, 2026, 2:42 PM EDT
Recruiting No phase listed Observational

Impact of Highly Effective Modulator Therapy on the Cystic Fibrosis Microbiome

NCT05982795
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Nasal endoscopy with microbiome swab and mucus collection through filter paper and sponge, Olfactory Function Testing, Survey Completion
Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 99 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Sep 3, 2026, 2:42 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Gut Organoid and Microbiome Interactions in Hypertension

NCT04497727
View directory record Official record
Conditions
Gut Inflammation, Hypertension
Interventions
Gene Expression
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 28, 2025 · Synced Sep 3, 2026, 2:42 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Descriptive Analysis of Gut Microbiome Alterations in Hyperoxaluric Patients

NCT02794649
View directory record Official record
Conditions
Oxalate, Primary Hyperoxaluria, Microbiome
Interventions
Not listed
Lead sponsor
VA New York Harbor Healthcare System
Federal
Eligibility
18 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 25, 2017 · Synced Sep 3, 2026, 2:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Black Raspberry Phytochemicals on Oral Microbiome in Current Smokers and Non-smokers

NCT02439255
View directory record Official record
Conditions
Healthy Subject, Tobacco Use Disorder
Interventions
Laboratory Biomarker Analysis, Phytochemical, Placebo, Screening Questionnaire Administration
Other · Dietary Supplement
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years to 50 Years
Enrollment
148 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 4, 2022 · Synced Sep 3, 2026, 2:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Analyzing IBS to Identify Biomarkers and Microbiome Signatures

NCT02419963
View directory record Official record
Conditions
Diarrhoea Predominant Irritable Bowel Syndrome, IBS
Interventions
endoscopy for tissue biopsy, Blood Sample, Stool Sample
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced Sep 3, 2026, 2:42 PM EDT
Active, not recruiting No phase listed Observational

Metagenomic Evaluation of the Gut Microbiome in Patients With Lynch Syndrome and Other Hereditary Colonic Polyposis Syndromes

NCT02371135
View directory record Official record
Conditions
Lynch Syndrome, Hereditary Colonic Polyposis Syndromes
Interventions
colonic biopsies, questionnaires
Genetic
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Sep 3, 2026, 2:42 PM EDT
Recruiting No phase listed Observational

Increasing Pre-Surgical Identification of Muscle Invasive Tumor Evaluations Prior to Planned Cystectomy (INSITE)

NCT06396533
View directory record Official record
Conditions
Urothelial Carcinoma, Muscle Invasive Bladder Urothelial Carcinoma, Non-Muscle Invasive Bladder Urothelial Carcinoma
Interventions
Not listed
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
2
States / cities
Omaha, Nebraska • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Sep 3, 2026, 2:42 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

A Study of the Possible Effects of Medication on Young Onset Colorectal Cancer (YOCRC)

NCT05568420
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Not listed
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years to 49 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 3, 2026, 2:42 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Longitudinal Analysis of the Vaginal Microbiome

NCT05383326
View directory record Official record
Conditions
Vaginal Microbiome
Interventions
Not listed
Lead sponsor
Viome
Industry
Eligibility
18 Years and older · Female only
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Dec 11, 2023 · Synced Sep 3, 2026, 2:42 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Development of a Microbiome Non-invasive Diagnosis Tool

NCT03330444
View directory record Official record
Conditions
Infertility of Uterine Origin
Interventions
Endometrial biopsy and endometrial fluid collection
Procedure
Lead sponsor
Igenomix
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
452 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
4
States / cities
Norwalk, Connecticut • Margate, Florida • Chesterfield, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Sep 3, 2026, 2:42 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Mechanisms of Hypoglycemia in Patients Without Diabetes

NCT04428723
View directory record Official record
Conditions
Hypoglycemia
Interventions
Entry of demographic and medical history data into a deidentified database, Blood sample for DNA analysis, Stool sample for microbiome analysis, Mixed meal tolerance test, Continuous glucose monitoring, activity monitor
Other · Genetic · Diagnostic Test
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
18 Years to 70 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 3, 2026, 2:42 PM EDT
Enrolling by invitation Not applicable Interventional

Microbiome Effects of Extended Use of MI Paste in Elderly Removable Denture Wearers

NCT06406751
View directory record Official record
Conditions
Dental Prosthesis
Interventions
MI Paste
Device
Lead sponsor
University of Iowa
Other
Eligibility
65 Years to 105 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 3, 2026, 2:42 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Vaginal Ecosystem and Network in the United States Study

NCT06472765
View directory record Official record
Conditions
Bacterial Vaginosis, Candidiasis, Urinary Tract Infections, Genitourinary Syndrome of Menopause, Lichen Sclerosus, Lichen Planus, Vulvodynia, Endometriosis, Ureaplasma Infections, Cancer, Desquamative Inflammatory Vaginitis
Interventions
Vaginal Swab Collection
Diagnostic Test
Lead sponsor
Vaginal Biome Science
Other
Eligibility
18 Years to 89 Years · Female only
Enrollment
3,250 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
20
States / cities
Fullerton, California • Los Angeles, California • Pasadena, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2025 · Synced Sep 3, 2026, 2:42 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Infant Restore: Efficacy of Microbiome Analysis and Education

NCT06424691
View directory record Official record
Conditions
Microbiota, Eczema, Microbiome, Gut Microbiome
Interventions
Tailored Recommendations, Consult Call, Email Series
Dietary Supplement · Behavioral
Lead sponsor
Seeding Inc
Industry
Eligibility
0 Months to 3 Months
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fredericksburg, Texas
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Sep 3, 2026, 2:42 PM EDT
Completed Early Phase 1 Interventional

Pilot Study for the Use of Photodynamic Therapy in the Treatment of Seborrheic Dermatitis

NCT03114111
View directory record Official record
Conditions
Seborrheic Dermatitis
Interventions
aminolevulinic acid (ALA), Placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Aug 10, 2021 · Synced Sep 3, 2026, 2:42 PM EDT