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Showing 1–24 of 416 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Data and Specimen Collection Clear all
Completed No phase listed Observational Accepts healthy volunteers

Stool Microbiome, Pathogens, and Infectious Agents Among Olympic and Elite Athletes

NCT02818413
View directory record Official record
Conditions
Athletic Performance
Interventions
Biospecimen collection and questionnaires
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 28, 2017 · Synced Sep 2, 2026, 2:17 AM EDT
Terminated Not applicable Interventional Results available

Protege Extension Trial - Long Term Follow Up Trial for Subjects Who Completed the Protege Study (CP-MGA031-01)

NCT00870818
View directory record Official record
Conditions
Type 1 Diabetes Mellitus
Interventions
Blood samples for safety, Patient reported outcome questionnaires, Analysis of T-cell subsets
Diagnostic Test · Behavioral
Lead sponsor
MacroGenics
Industry
Eligibility
10 Years to 37 Years
Enrollment
219 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 8, 2023 · Synced Sep 2, 2026, 2:17 AM EDT
Active, not recruiting Not applicable Interventional Results available

Screening for Prostate Cancer in Older Patients (PLCO Screening Trial)

NCT00002540
View directory record Official record
Conditions
Prostate Carcinoma
Interventions
Laboratory Biomarker Analysis, Medical Examination Assessment, Screening Questionnaire Administration
Other · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
55 Years to 74 Years · Male only
Enrollment
76,685 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1993 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Spontaneous Pneumothorax in Children

NCT02573285
View directory record Official record
Conditions
Spontaneous Pneumothorax
Interventions
Simple Aspiration, Surgeon Preference
Procedure
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
12 Years to 17 Years
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 4, 2019 · Synced Sep 2, 2026, 2:17 AM EDT
Active, not recruiting No phase listed Observational

Neuroblastoma Precision Trial

NCT02868268
View directory record Official record
Conditions
Neuroblastoma
Interventions
Gene panel sequencing of tumor specimens
Other
Lead sponsor
New Approaches to Neuroblastoma Therapy Consortium
Other
Eligibility
1 Year to 30 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
11
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Active, not recruiting Phase 2 Interventional

Study to Determine Optimal Dose and Evaluate Safety, Tolerability, and Pharmacokinetics of Progerinin in Patients With Hutchinson-Gilford Progeria Syndrome (HGPS)

NCT06775041
View directory record Official record
Conditions
Hutchinson-Gilford Progeria Syndrome
Interventions
Progerinin, Lonafarnib
Drug
Lead sponsor
PRG Science & Technology Co., Ltd.
Industry
Eligibility
1 Year and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 8, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Not yet recruiting Phase 2 Interventional

Psilocybin With Psychotherapy for Improving Chronic Pain in Cancer Patients Requiring Opioids

NCT06827054
View directory record Official record
Conditions
Hematopoietic and Lymphatic System Neoplasm, Malignant Solid Neoplasm
Interventions
Biospecimen Collection, Functional Magnetic Resonance Imaging, Interview, Psilocybine, Psychotherapy, Questionnaire Administration
Procedure · Other · Drug + 1 more
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Completed No phase listed Observational Results available

Concept Mapping as a Scalable Method for Identifying Patient-Important Outcomes

NCT02792777
View directory record Official record
Conditions
Concept Mapping Versus Interviews
Interventions
Interviews, Concept Mapping (CM)
Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 14, 2019 · Synced Sep 2, 2026, 2:17 AM EDT
Enrolling by invitation No phase listed Observational

Surgical Site Infection Outcomes in Natural Orifice Intracorporeal Anastomosis and Extraction (NICE) Procedure - The NICE Trial

NCT06957236
View directory record Official record
Conditions
Diverticulitis, Surgical Site Infection, Surgical Site Infections, Colorectal Surgery, Robotic Surgical Procedures, Clinical Trials, Diverticulitis, Colonic, Diverticulitis Colon, Diverticulitis; Perforation, Bowel
Interventions
Not listed
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 7, 2025 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Molecular Basis for Variations in Hereditary Colorectal Cancer Syndromes

NCT02863172
View directory record Official record
Conditions
Hereditary Colorectal Cancer Syndrome
Interventions
Questionnaires, Blood Draw/Saliva Sample
Behavioral · Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Completed No phase listed Observational

Risk Factors and Biomarkers for Diagnosis and Treatment of EoE

NCT01988285
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
Specimen Collection, Questionnaires
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2024
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Optimizing Health Related Quality of Life Measurement in Adolescent and Young Adult Oncology

NCT06897137
View directory record Official record
Conditions
Malignant Solid Neoplasm, Hematopoietic Neoplasms, Lymphatic System Neoplasm
Interventions
Surveys/Questionnaires
Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
15 Years and older
Enrollment
3,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Medications for Opioid Use Disorder Photosensitive Retinal Ganglion Cell Function, Sleep, and Circadian Rhythms: Implications for Treatment

NCT06104280
View directory record Official record
Conditions
Opioid Use Disorder, Sleep Disturbance
Interventions
Post-Illumination Pupillary Response (PIPR), Polysomnography, Multiple Sleep Latency Test, Ecological Momentary Assessments, Actigraphy, DLMO, Melatonin Suppression Test
Other · Behavioral · Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 80 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting No phase listed Observational

Longitudinal Sexual and Reproductive Health Study of Women With Breast Cancer and Lymphoma

NCT01788839
View directory record Official record
Conditions
Breast Cancer, Lymphoma, Hodgkin's Lymphoma
Interventions
surveys, Blood draw, Transvaginal ultrasounds
Behavioral · Other · Device
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
475 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2027
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Withdrawn No phase listed Observational

VALIDATE: Factor VIII Trending for MS Relapse

NCT04082468
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Blood sample collection for coagulation profile
Diagnostic Test
Lead sponsor
St. Joseph's Hospital and Medical Center, Phoenix
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 20, 2021 · Synced Sep 2, 2026, 2:17 AM 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 24, 2019 · Synced Sep 2, 2026, 2:17 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Adaptive Preventive Intervention for College Alcohol Use

NCT03930524
View directory record Official record
Conditions
College Student Drinking
Interventions
Personalized Normative Feedback (PNF), Self-Monitoring (SM), Web-BASICS, Health Promotion Consultation, M-Bridge Online Health Coach
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 21 Years
Enrollment
891 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 11, 2023 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Preparedness Through Respiratory Virus Epidemiology and Community Engagement

NCT07147517
View directory record Official record
Conditions
Respiratory Infection Virus, COVID -19, RSV, FLU
Interventions
Component A0, Component A1, Component A2, Component B
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
Not listed
Enrollment
25,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2030
U.S. locations
2
States / cities
La Jolla, California • San Ysidro, California
Source: ClinicalTrials.gov public record
Updated Nov 3, 2025 · Synced Sep 2, 2026, 2:17 AM EDT
Terminated Not applicable Interventional

An Interactive Time-Restricted Diet Intervention (txt4fasting) for Reducing Neurocognitive Decline and Improving Survival in Patients With Brain Metastases From Breast or Lung Cancer

NCT06315296
View directory record Official record
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Metastatic Breast Carcinoma, Metastatic Lung Carcinoma, Metastatic Malignant Neoplasm in the Brain, Stage IV Lung Cancer AJCC v8
Interventions
Behavioral Dietary Intervention, Text Message-Based Navigation Intervention, Internet-Based Intervention, Dietary Counseling and Surveillance, Stereotactic Radiosurgery, Biospecimen Collection, Magnetic Resonance Imaging, Neurocognitive Assessment, Questionnaire Administration, Interview
Behavioral · Other · Radiation + 1 more
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting No phase listed Observational

Collection of Clinical Data and Specimens for Research in Hearing, Balance, Taste, Smell, Voice, Speech, and Language Disorders.

NCT05670496
View directory record Official record
Conditions
Hearing Loss, Deafness
Interventions
Not listed
Lead sponsor
National Institute on Deafness and Other Communication Disorders (NIDCD)
NIH
Eligibility
2 Years to 99 Years
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2032
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting No phase listed Observational

TRPC6 Characterization to Predict and Prevent Chemotherapy Related Cardiomyopathy and Heart Failure With Breast Cancer

NCT05507879
View directory record Official record
Conditions
Breast Carcinoma, Cardiomyopathy, Congestive Heart Failure
Interventions
Biospecimen Collection, Electronic Medical Record
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
2
States / cities
Gainesville, Florida • Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Completed No phase listed Observational

Social-environmental, Psychosocial, Behavioral, Clinical and Biological Drivers of Disparities in Liver Disease Progression Among Korean American With Chronic Hepatitis B Infection

NCT05117541
View directory record Official record
Conditions
Chronic Viral Hepatitis, Hepatitis B Infection
Interventions
Interview, Biospecimen Collection, Electronic Health Record Review
Other · Procedure
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
365 participants
Timeline
2021 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Linking Somatic Mutation Rate With Baseline Exposure in East Palestine

NCT06357845
View directory record Official record
Conditions
Somatic Mutation
Interventions
Survey, Biological specimen collection, Communications about study updates and future research opportunities, Qualitative interview
Other
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced Sep 2, 2026, 2:17 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Healthy Family Project: Tobacco Use and Smoke Exposure in Asian American Communities

NCT07049757
View directory record Official record
Conditions
Tobacco-Related Carcinoma, Smoking Cessation
Interventions
Smoking cessation education, Survey Administration, Telephone-Based Intervention, Urine Specimen Collection, Silicone Wrist Band, Interview, Focus Group
Other · Behavioral · Procedure
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
760 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 2, 2026, 2:17 AM EDT