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ClinicalTrials.gov public records Last synced Oct 19, 2026, 4:54 PM EDT

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Showing 505–528 of 4,385 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: observational study Clear all
Completed No phase listed Observational Accepts healthy volunteers

Safety, Tolerability, and Efficacy of ellaOne® (Ulipristal Acetate) for Emergency Contraception in Postmenarcheal Adolescent Girls and Women

NCT01107106
View directory record Official record
Conditions
Contraception
Interventions
ellaOne® (ulipristal acetate)
Drug
Lead sponsor
HRA Pharma
Industry
Eligibility
Female only
Enrollment
579 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
4
States / cities
Denver, Colorado • Lakewood, Colorado • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 15, 2013 · Synced Oct 19, 2026, 4:54 PM EDT
Recruiting No phase listed Observational

A Real-World Registry of Chronic Wounds and Ulcers

NCT02280733
View directory record Official record
Conditions
Diabetic Foot, Pressure Ulcer, Surgical Wound Dehiscence, Vasculitis, Skin Ulcer, Leg Ulcer, Pyoderma, Peripheral Arterial Disease, Lymphedema, Surgical Complication, Venous Leg Ulcers (VLUs), Calciphylaxis, Sickle Cell Ulcer, Pressure Ulcer (PU), Diabetic Foot Ulcers (DFUs), Pressure Injury, Arterial Ulcers, Soft Tissue Radionecrosis (STRN), Traumatic Wounds, Chronic Ulcer
Interventions
Usual care
Other
Lead sponsor
U.S. Wound Registry
Other
Eligibility
Not listed
Enrollment
300,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2030
U.S. locations
1
States / cities
The Woodlands, Texas
Source: ClinicalTrials.gov public record
Updated Jul 16, 2025 · Synced Oct 19, 2026, 4:54 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Stop Retinal Ganglion Cell Dysfunction Study

NCT02390284
View directory record Official record
Conditions
Glaucoma
Interventions
Latanoprost, Bimatoprost, Travoprost, Timolol, Dorzolamide, Brinzolamide, Acetazolamide, Methazolamide
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 85 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2024
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Oct 19, 2026, 4:54 PM EDT
Recruiting No phase listed Observational

Prospective Observational Study of the ICD in Sudden Cardiac Death Prevention

NCT00733590
View directory record Official record
Conditions
Heart Failure, Congestive, Death, Sudden, Cardiac, Arrhythmia, Cardiomyopathies
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 85 Years
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2029
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

Hyponatremia Registry for Patients With Euvolemic and Hypervolemic Hyponatremia

NCT01240668
View directory record Official record
Conditions
Euvolemic Hyponatremia, Hypervolemic Hyponatremia
Interventions
Not listed
Lead sponsor
Otsuka America Pharmaceutical
Industry
Eligibility
18 Years and older
Enrollment
5,028 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
72
States / cities
Azusa, California • Inglewood, California • Los Angeles, California + 58 more
Source: ClinicalTrials.gov public record
Updated May 15, 2015 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

Assessment of Patterns of Patient Reported Outcomes in Adults With Congenital Heart Disease - International Study II

NCT04902768
View directory record Official record
Conditions
Congenital Heart Disease
Interventions
This is an observational study, there is no intervention
Other
Lead sponsor
KU Leuven
Other
Eligibility
18 Years and older
Enrollment
8,415 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
10
States / cities
San Francisco, California • Stanford, California • Gainesville, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

Natural History of Patients With PH3 and a History of Stone Events

NCT04542590
View directory record Official record
Conditions
Primary Hyperoxaluria Type 3
Interventions
Not listed
Lead sponsor
Dicerna Pharmaceuticals, Inc., a Novo Nordisk company
Industry
Eligibility
2 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
2
States / cities
Boston, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 2, 2024 · Synced Oct 19, 2026, 4:54 PM EDT
Terminated No phase listed Observational

An Observational, Non-Interventional Trial to Assess Patient Satisfaction and Safety of Subsys™ Spray.

NCT01901718
View directory record Official record
Conditions
Breakthrough Pain
Interventions
Not listed
Lead sponsor
International Clinical Research Institute
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 4, 2014 · Synced Oct 19, 2026, 4:54 PM EDT
Not yet recruiting No phase listed Observational

An Observational Exploration of Clinical Trials Targeting Traumatic Brain Injury

NCT06264518
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Not listed
Lead sponsor
Power Life Sciences Inc.
Industry
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 20, 2024 · Synced Oct 19, 2026, 4:54 PM EDT
Active, not recruiting Phase 3 Interventional

Testing Immunotherapy Versus Observation in Patients With HPV Throat Cancer

NCT03811015
View directory record Official record
Conditions
Clinical Stage II HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8, Clinical Stage III HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8
Interventions
Biospecimen Collection, Cisplatin, Computed Tomography, Echocardiography Test, Fludeoxyglucose F-18, Intensity-Modulated Radiation Therapy, Nivolumab, Patient Observation, Positron Emission Tomography
Procedure · Drug · Other + 2 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
636 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2030
U.S. locations
727
States / cities
Fairhope, Alabama • Mobile, Alabama • Anchorage, Alaska + 462 more
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Clinical Learning Study for a Mobile Smoking Cessation Program

NCT04857515
View directory record Official record
Conditions
Smoking Cessation, Smoking Behaviors, Smoking Reduction, Smoking, Cigarette, Smoking, Nicotine Dependence
Interventions
Clickotine®
Device
Lead sponsor
Click Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 17, 2021 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

Long-term Observational Study of the Safety of Roflumilast

NCT03381573
View directory record Official record
Conditions
COPD
Interventions
Roflumilast
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
40 Years and older
Enrollment
135,856 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 26, 2023 · Synced Oct 19, 2026, 4:54 PM EDT
Recruiting No phase listed Observational

Identifying Modifiable PAtient Centered Therapeutics (IMPACT) Frailty

NCT04717869
View directory record Official record
Conditions
Frailty, Sarcopenia
Interventions
Ultrasound, Biomarker Analysis, Frailty Index
Diagnostic Test · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 30, 2026 · Synced Oct 19, 2026, 4:54 PM EDT
Enrolling by invitation No phase listed Observational

Kerecis Real-World Fish Skin Graft Registry

NCT06384183
View directory record Official record
Conditions
Wounds, Pressure Ulcer, Diabetic Foot Ulcer, Venous Leg Ulcer, Surgical Wound, Soft Tissue Reinforcement
Interventions
Kerecis Fish Skin Graft
Device
Lead sponsor
Kerecis Ltd.
Industry
Eligibility
Not listed
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
6
States / cities
Sarasota, Florida • Greensboro, North Carolina • Beavercreek, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 30, 2024 · Synced Oct 19, 2026, 4:54 PM EDT
Completed Not applicable Interventional Results available

Sleep and Circadian Rhythms in Mechanically Ventilated Patients

NCT01276652
View directory record Official record
Conditions
Respiratory Failure, Critical Illness
Interventions
Environmental modification
Behavioral
Lead sponsor
University of Iowa
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2008
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 26, 2017 · Synced Oct 19, 2026, 4:54 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Metatranscriptomic Markers of Colonic Neoplasia

NCT07786818
View directory record Official record
Conditions
Colorectal Polyps
Interventions
This is an observational study that has no interventions
Other
Lead sponsor
Viome
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Bothell, Washington
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

The Influence of in Utero Cannabis Exposure on Neonatal Brain Morphology and Structural Connectivity

NCT03718520
View directory record Official record
Conditions
Cannabis Use Disorder, PREG1, Drug Use, Fetal Exposure During Pregnancy, Neurodevelopmental Abnormality
Interventions
no intervention, this is a purely observational study
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older · Female only
Enrollment
168 participants
Timeline
2018 – 2020
U.S. locations
2
States / cities
Aurora, Colorado • Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 27, 2021 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

Telephone Interview of Patients That Participated in the the Pivotal Betaferon MS Trial.

NCT01031459
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Betaseron (Interferon beta-1b, BAY86-5046)
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older
Enrollment
176 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
6
States / cities
Birmingham, Alabama • Tucson, Arizona • San Francisco, California + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 5, 2012 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

Assessing Sleep and Circadian Rhythms in Primary Brain Tumors Patients

NCT04669574
View directory record Official record
Conditions
Sleep Circadian Rhythms, Chronodisruption
Interventions
Not listed
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 99 Years
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2025 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

Shoulder Symptom Irritability Scale: A Single-Blinded Observational Study

NCT02995941
View directory record Official record
Conditions
Shoulder Pain, Pain
Interventions
Not listed
Lead sponsor
St. Luke's Hospital and Health Network, Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
17
States / cities
Washington, New Jersey • Allentown, Pennsylvania • Bath, Pennsylvania + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 20, 2019 · Synced Oct 19, 2026, 4:54 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Continuous Glucose Monitoring for Various Degrees of Glucose Intolerance

NCT05491954
View directory record Official record
Conditions
Diabetes, Gestational
Interventions
Dexcom G6
Device
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 21, 2022 · Synced Oct 19, 2026, 4:54 PM EDT
Completed No phase listed Observational

Real World Observational Study of Poteligeo in Adult Patients With MF and SS (PROSPER)

NCT05455931
View directory record Official record
Conditions
Mycosis Fungoides and Sézary Syndrome
Interventions
Poteligeo
Drug
Lead sponsor
Kyowa Kirin Pharmaceutical Development Ltd
Industry
Eligibility
18 Years and older
Enrollment
73 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
5
States / cities
Baltimore, Maryland • St Louis, Missouri • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2026 · Synced Oct 19, 2026, 4:54 PM EDT
Terminated No phase listed Observational

Nanowear Heart Failure Management Multi-sensor Algorithm

NCT03719079
View directory record Official record
Conditions
Heart Failure
Interventions
SimpleSENSE
Device
Lead sponsor
Nanowear Inc.
Industry
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 9, 2026 · Synced Oct 19, 2026, 4:54 PM EDT
Active, not recruiting No phase listed Observational

Clinical Data Collection in Studying Clinical Factors Associated With Post-Surgery Chronic Opioid Use in Patients With Head and Neck Cancers

NCT03888651
View directory record Official record
Conditions
Head and Neck Carcinoma
Interventions
Quality-of-Life Assessment, Questionnaire Administration
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Oct 19, 2026, 4:54 PM EDT