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ClinicalTrials.gov public records Last synced Sep 26, 2026, 2:36 PM EDT

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Showing 1–24 of 643 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Observational study - no intervention Clear all
Recruiting No phase listed Observational

PKD Clinical and Translational Core Study

NCT01873235
View directory record Official record
Conditions
Polycystic Kidney Disease
Interventions
Not listed
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2030
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Sep 26, 2026, 2:36 PM EDT
Active, not recruiting Phase 2 Interventional

A Phase II Clinical Trial Comparing the Efficacy of RO7198457 Versus Watchful Waiting in Patients With ctDNA-positive, Resected Stage II (High Risk) and Stage III Colorectal Cancer

NCT04486378
View directory record Official record
Conditions
Colorectal Cancer Stage II, Colorectal Cancer Stage III
Interventions
RO7198457 intravenous (IV), Observational group (no intervention)
Drug · Other
Lead sponsor
BioNTech SE
Industry
Eligibility
18 Years and older
Enrollment
327 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2030
U.S. locations
15
States / cities
Greenbrae, California • Indianapolis, Indiana • Minneapolis, Minnesota + 12 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 26, 2026, 2:36 PM EDT
Active, not recruiting No phase listed Observational

The PROspera Kidney Transplant ACTIVE Rejection Assessment Registry (ProActive)

NCT04091984
View directory record Official record
Conditions
Kidney Transplant Rejection
Interventions
Prospera
Diagnostic Test
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
55
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 45 more
Source: ClinicalTrials.gov public record
Updated Aug 5, 2024 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Symptoms of Lower Urinary Tract Dysfunction Phenotyping Study

NCT02485808
View directory record Official record
Conditions
Lower Urinary Tract Symptoms
Interventions
None-observational, Magnetic Resonance Imaging (MRI), Multimodal Automated Sensory Testing System, Auditory Sensitivity Test
Other · Procedure
Lead sponsor
Arbor Research Collaborative for Health
Other
Eligibility
18 Years and older
Enrollment
1,879 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
6
States / cities
Chicago, Illinois • Iowa City, Iowa • Ann Arbor, Michigan + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2019 · Synced Sep 26, 2026, 2:36 PM EDT
Completed Not applicable Interventional

Exercise in Adults with Post-Acute Sequelae of SARS-CoV-2 (COVID-19) Infection Study

NCT05218174
View directory record Official record
Conditions
COVID-19
Interventions
Exercise Prescription
Other
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Frisco, Texas
Source: ClinicalTrials.gov public record
Updated Jan 21, 2025 · Synced Sep 26, 2026, 2:36 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardiac Rehab and Cerebral Blood Flow Study

NCT05012878
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
Cardiac rehabilitation - high intensity interval training (HIIT), Cardiac rehabilitation - moderate intensity continuous training (MICT), Cardiac rehabilitation - control, Cardiac rehabilitation - observational
Behavioral
Lead sponsor
Mayo Clinic
Other
Eligibility
40 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 28, 2025 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational

An Observational Study of Lymphoma in Patients With Rheumatoid Arthritis or Crohn's Disease.

NCT00440817
View directory record Official record
Conditions
Lymphoma
Interventions
No intervention
Other
Lead sponsor
Centocor Ortho Biotech Services, L.L.C.
Industry
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
3
States / cities
Highland Park, Illinois • Wichita, Kansas • Albany, New York
Source: ClinicalTrials.gov public record
Updated Apr 9, 2014 · Synced Sep 26, 2026, 2:36 PM EDT
Recruiting No phase listed Observational

OverTTuRe: Characteristics, Treatment Patterns and Outcomes of Patients With ATTR Amyloidosis

NCT06355934
View directory record Official record
Conditions
ATTR Amyloidosis
Interventions
no intervention
Other
Lead sponsor
AstraZeneca
Industry
Eligibility
Not listed
Enrollment
52,121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Eden Prairie, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational

The Impact of Non-Routine Events on Neonatal Safety

NCT02756195
View directory record Official record
Conditions
Neonatology
Interventions
Not listed
Lead sponsor
Vanderbilt University
Other
Eligibility
Not listed
Enrollment
395 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 25, 2022 · Synced Sep 26, 2026, 2:36 PM EDT
Not yet recruiting Not applicable Interventional

Study to Understand Relationship Between Gut Health and Toxicities of Hormonal Breast Cancer Treatment

NCT07553234
View directory record Official record
Conditions
Breast Cancer
Interventions
Stool Sampling, Chia Seeds
Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 26, 2026, 2:36 PM EDT
Not listed No phase listed Observational

Voice Outcomes Following Thyroidectomy

NCT03657654
View directory record Official record
Conditions
Thyroid Cancer, Thyroid Nodule
Interventions
No intervention: observational only
Other
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 8, 2022 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational

Detection Rate of Serrated Adenomas in Screening Colonoscopy

NCT03442270
View directory record Official record
Conditions
Healthy Patients Undergoing Screening Colonoscopy
Interventions
No Intervention
Other
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years and older
Enrollment
276 participants
Timeline
2018
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 13, 2019 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

SpO2 Validation Study - All.Health Algo Oximeter Software

NCT07527000
View directory record Official record
Conditions
Device Performance, Healthy Adult Volunteers
Interventions
No intervention (observational study)
Device
Lead sponsor
All Health, Inc.
Industry
Eligibility
22 Years to 50 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Louisville, Colorado
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational Results available

Psoriatic Arthritis Research Collaborative: Biologic Sub-Study

NCT03378336
View directory record Official record
Conditions
Psoriatic Arthritis
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 89 Years
Enrollment
171 participants
Timeline
2017 – 2023
U.S. locations
4
States / cities
New York, New York • Cleveland, Ohio • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated May 8, 2025 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational

Screening for Colonization With Resistant Enterobacterales in Neutropenic Patients With Hematologic Malignancies

NCT04710212
View directory record Official record
Conditions
Hematologic Malignancy, Leukemia, Acute, Neutropenia, Bloodstream Infection
Interventions
No intervention.
Other
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
168 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
6
States / cities
San Francisco, California • Nutley, New Jersey • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vaginal Microbiome and IVF Pregnancy Outcome

NCT05150639
View directory record Official record
Conditions
Vaginal Flora Imbalance
Interventions
IVF
Other
Lead sponsor
Freya Biosciences ApS
Industry
Eligibility
18 Years to 44 Years · Female only
Enrollment
301 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Waltham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational

An Study of Patients With Ph- Chromosome-negative Relapsed or Refractory Acute Lymphoblastic Leukemia in the US

NCT02783651
View directory record Official record
Conditions
Relapsed/Refractory Acute Lymphoblastic Leukemia
Interventions
Other
Other
Lead sponsor
Amgen
Industry
Eligibility
Not listed
Enrollment
212 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
19
States / cities
Tucson, Arizona • Duarte, California • Los Angeles, California + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2020 · Synced Sep 26, 2026, 2:36 PM EDT
Not listed No phase listed Observational

A Prospective, Observational Study of Clinician and Patient-reported Outcomes in Patients With Dermatological Conditions

NCT05084417
View directory record Official record
Conditions
Atopic Dermatitis, Dermatology, Vitiligo, Alopecia Areata, Hidradenitis Suppurativa, Psoriasis
Interventions
N/A This is an observational study
Other
Lead sponsor
OM1, Inc.
Industry
Eligibility
18 Years and older
Enrollment
10,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 31, 2023 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational

Sickle Cell Uric Acid (SCUA) - Cohort Repository

NCT04190888
View directory record Official record
Conditions
Chronic Kidney Diseases, Sickle Cell Disease
Interventions
No intervention
Other
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
5 Years to 29 Years
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Feb 3, 2022 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational Results available

Long-Term Safety Follow-Up Of Subjects Previously Enrolled In Rheumatoid Arthritis Studies Of CP-690,550

NCT00414661
View directory record Official record
Conditions
Arthritis, Rheumatoid
Interventions
CP-690,550
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
21
States / cities
Gilbert, Arizona • Tucson, Arizona • Palo Alto, California + 15 more
Source: ClinicalTrials.gov public record
Updated Dec 31, 2012 · Synced Sep 26, 2026, 2:36 PM EDT
Completed No phase listed Observational

Isolation and Characterization of Multiple Microbial Species From Diverse Healthy Adults

NCT05150184
View directory record Official record
Conditions
Human Microbiome
Interventions
Non-interventional
Other
Lead sponsor
Danisco
Industry
Eligibility
18 Years to 50 Years
Enrollment
52 participants
Timeline
2021 – 2023
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 6, 2023 · Synced Sep 26, 2026, 2:36 PM EDT
Recruiting No phase listed Observational

Cognitive and Vascular Functioning Following TBI

NCT06034509
View directory record Official record
Conditions
Traumatic Brain Injury, Cognitive Decline, Vascular Dementia
Interventions
No intervention. This is an observational study.
Other
Lead sponsor
Walter Reed National Military Medical Center
Federal
Eligibility
18 Years to 74 Years
Enrollment
300 participants
Timeline
2023 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 25, 2025 · Synced Sep 26, 2026, 2:36 PM EDT
Completed Not applicable Interventional

Increasing Water Access and Appeal in Community Recreation Centers

NCT03637465
View directory record Official record
Conditions
Health Behavior
Interventions
Hydrate Philly
Behavioral
Lead sponsor
Philadelphia Department of Public Health
Government
Eligibility
3 Years to 100 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 1, 2019 · Synced Sep 26, 2026, 2:36 PM EDT
Recruiting No phase listed Observational

A Long-term Follow-up Study to Evaluate SKG0106 in the Treatment of Patients With nAMD

NCT06346600
View directory record Official record
Conditions
Neovascular (Wet) Age-related Macular Degeneration
Interventions
SKG0106
Genetic
Lead sponsor
Skyline Therapeutics
Industry
Eligibility
50 Years and older
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
3
States / cities
Boston, Massachusetts • Katy, Texas • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 26, 2026, 2:36 PM EDT