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ClinicalTrials.gov public records Last synced Oct 21, 2026, 10:34 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1153–1176 of 4,387 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: observational study Clear all
Not yet recruiting No phase listed Observational

Studying Patterns in Patient Engagement Among Tardive Dyskinesia Patients

NCT06218719
View directory record Official record
Conditions
Tardive Dyskinesia
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 Jan 23, 2024 · Synced Oct 21, 2026, 10:34 PM EDT
Not listed No phase listed Observational

Survey of Cancer Patients' Perceptions of Difficulties Encountered When Filling Opioid Prescriptions

NCT03989128
View directory record Official record
Conditions
Malignant Neoplasm, Pain
Interventions
Medical Chart Review, Survey Administration
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 29, 2020 · Synced Oct 21, 2026, 10:34 PM EDT
Not yet recruiting Phase 2 Interventional

Daridorexant for People With Insomnia and Alcohol Use Disorder Study

NCT07701928
View directory record Official record
Conditions
Alcohol Use Disorder, Insomnia
Interventions
Daridorexant, Placebo, Brief Counseling, MEMS and Medication Accounting, Contingency Management for Medication Adherence
Drug · Behavioral · Device
Lead sponsor
Sterling McPherson
Other
Eligibility
18 Years and older
Enrollment
205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Spokane, Washington
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Oct 21, 2026, 10:34 PM EDT
Terminated No phase listed Observational

Evaluation of Specific Biomarkers in Primary Invasive Breast Cancer

NCT01476111
View directory record Official record
Conditions
Neoplasms, Breast
Interventions
Not listed
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
4
States / cities
Newark, Delaware • Plantation, Florida • Charleston, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 9, 2015 · Synced Oct 21, 2026, 10:34 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Muscle Aging Phenotypes in Childhood Cancer Survivors

NCT07531498
View directory record Official record
Conditions
Muscle Weakness, Low Muscle Mass, Sarcopenia
Interventions
Multimodal Muscle Imaging and Functional Assessment, Multimodal Muscle Imaging and Neuromuscular Assessment, Comprehensive Muscle Phenotyping, Integrated Neuromuscular and Imaging Evaluation
Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
18 Years and older
Enrollment
533 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2031
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 21, 2026, 10:34 PM EDT
Terminated No phase listed Observational

Heart Failure Monitoring With a Portable Ultrasound Device With Artificial Intelligence Assisted Tools: A Multi-Phase Observational Feasibility Study

NCT05594940
View directory record Official record
Conditions
Congestive Heart Failure
Interventions
Not listed
Lead sponsor
Butterfly Network
Industry
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Concord, California • Walnut Creek, California
Source: ClinicalTrials.gov public record
Updated Feb 26, 2024 · Synced Oct 21, 2026, 10:34 PM EDT
Completed Not applicable Interventional Results available

Cholecalciferol Supplement in Treating Patients With Localized Prostate Cancer Undergoing Observation

NCT00887432
View directory record Official record
Conditions
Prostate Adenocarcinoma
Interventions
Cholecalciferol, Laboratory Biomarker Analysis, Patient Observation, Placebo Administration, Quality-of-Life Assessment, Questionnaire Administration
Dietary Supplement · Other · Drug
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older · Male only
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2020
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 26, 2021 · Synced Oct 21, 2026, 10:34 PM EDT
Completed No phase listed Observational

DISRUPT PAD III Observational Study

NCT05881421
View directory record Official record
Conditions
Peripheral Arterial Disease
Interventions
Not listed
Lead sponsor
Shockwave Medical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,373 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
26
States / cities
Palo Alto, California • Aurora, Colorado • Loveland, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated May 31, 2023 · Synced Oct 21, 2026, 10:34 PM EDT
Completed Not applicable Interventional

Effect of a Targeted Notification and Clinical Support Pathway on Individuals With Left Ventricular Hypertrophy

NCT05713916
View directory record Official record
Conditions
Hypertrophy, Left Ventricular, Hypertension, Cardiomyopathies
Interventions
Intervention: Population Health Coordinator
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
30 Years to 75 Years
Enrollment
648 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 22, 2024 · Synced Oct 21, 2026, 10:34 PM EDT
Recruiting No phase listed Observational

Genomic and Methylation Markers in SCLC and LCNEC for Chemo-Immunotherapy Resistance Prediction (STRATUS)

NCT06717243
View directory record Official record
Conditions
Small Cell Lung Cancer, Large Cell Neuroendocrine (NE) Tumors, Treatment Failure, Biomarkers / Blood, Biomarkers, Immunotherapy
Interventions
Carboplatin/Cisplatin -Etoposide - Atezolizumab
Drug
Lead sponsor
Oncology Center of Biochemical Education And Research
Other
Eligibility
18 Years to 85 Years
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 19, 2025 · Synced Oct 21, 2026, 10:34 PM EDT
Terminated No phase listed Observational

Circulating Tumor DNA Alterations in Non-small Cell Lung Cancer Patients Treated With Pembrolizumab

NCT04791215
View directory record Official record
Conditions
Non Small Cell Lung Cancer
Interventions
Observational
Other
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 26, 2024 · Synced Oct 21, 2026, 10:34 PM EDT
Not listed No phase listed Observational

Inspiring New Science In Guiding Healthcare in Turner Syndrome Registry

NCT05052606
View directory record Official record
Conditions
Turner Syndrome
Interventions
No intervention
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
Female only
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
10
States / cities
Aurora, Colorado • Washington D.C., District of Columbia • Glenview, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2024 · Synced Oct 21, 2026, 10:34 PM EDT
Recruiting No phase listed Observational

Polyethylene Wear Particle Analysis of THA

NCT06432543
View directory record Official record
Conditions
Wear of Articular Bearing Surface of Prosthetic Joint, Hip Arthropathy
Interventions
polyethylene
Device
Lead sponsor
Osaka Metropolitan University
Other
Eligibility
20 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 20, 2025 · Synced Oct 21, 2026, 10:34 PM EDT
Recruiting No phase listed Observational

SuperSaturated Oxygen Comprehensive Observational Registry

NCT06438315
View directory record Official record
Conditions
STEMI - ST Elevation Myocardial Infarction, AMI
Interventions
KCCQ, Eq5D, cMRI (Subset of patients)
Other
Lead sponsor
TherOx
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
25
States / cities
Fountain Valley, California • La Jolla, California • Laguna Hills, California + 21 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 21, 2026, 10:34 PM EDT
Completed Not applicable Interventional Results available

Telemedicine Control Tower for the Post-Anesthesia Care Unit

NCT04020887
View directory record Official record
Conditions
Elective Surgery
Interventions
Alertwatch - Interaction
Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
560 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 19, 2023 · Synced Oct 21, 2026, 10:34 PM EDT
Recruiting No phase listed Observational

Extracellular Vesicles as Potential Biomarkers and Therapeutic Target in Gaucher Disease

NCT05843552
View directory record Official record
Conditions
Gaucher Disease
Interventions
no intervention
Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Timeline
2023 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Oct 21, 2026, 10:34 PM EDT
Completed No phase listed Observational

Clinical Sensitivity of Clearview Rapid Tests in 12-17 y/o Pediatric Population

NCT00567749
View directory record Official record
Conditions
HIV Infections
Interventions
Not listed
Lead sponsor
Chembio Diagnostic Systems, Inc.
Industry
Eligibility
12 Years to 17 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 27, 2008 · Synced Oct 21, 2026, 10:34 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Flucelvax (TIVc or QIVc) Pregnancy Registry

NCT03438487
View directory record Official record
Conditions
Influenza, Human, Pregnancy, Birth Defect
Interventions
Flucelvax Trivalent Influenza Vaccine, Flucelvax Quadrivalent Influenza Vaccine
Biological
Lead sponsor
Seqirus
Industry
Eligibility
Female only
Enrollment
692 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Wilmington, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 4, 2022 · Synced Oct 21, 2026, 10:34 PM EDT
Not listed Not applicable Interventional

Dietary Sodium (DS) Intervention to Reduce Volume Overload and Tissue Sodium in Magnetic Resonance Imaging (MRI) for Hemodialysis (HD) Patients

NCT03189758
View directory record Official record
Conditions
Kidney Failure, Chronic, Dietary Modification
Interventions
Observational Control Diet, Controlled Dietary Sodium Restriction
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 3, 2020 · Synced Oct 21, 2026, 10:34 PM EDT
Completed Phase 4 Interventional Results available

Placebo In Chronic Back Pain (Phase 2)

NCT02986334
View directory record Official record
Conditions
Chronic Low Back Pain
Interventions
Naproxen, Omeprazole, Placebo
Drug
Lead sponsor
Apkar Apkarian
Other
Eligibility
18 Years to 75 Years
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Oct 21, 2026, 10:34 PM EDT
Completed No phase listed Observational

An Observational Study for Analysis of Mortality in Participants Who Participated in Previous 3 Studies of Galantamine

NCT00297414
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
No intervention
Other
Lead sponsor
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Industry
Eligibility
Not listed
Enrollment
1,083 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
50
States / cities
Tucson, Arizona • Laguna Woods, California • Northridge, California + 47 more
Source: ClinicalTrials.gov public record
Updated Apr 12, 2012 · Synced Oct 21, 2026, 10:34 PM EDT
Enrolling by invitation No phase listed Observational

Long Term Follow-Up for RGX-111

NCT06103487
View directory record Official record
Conditions
Mucopolysaccharidosis I
Interventions
No Intervention
Genetic
Lead sponsor
REGENXBIO Inc.
Industry
Eligibility
Not listed
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 21, 2026, 10:34 PM EDT
Completed No phase listed Observational

A Registry to Evaluate the Performance of the BDX-XL2 Test

NCT03766958
View directory record Official record
Conditions
Nodule Solitary Pulmonary, NSCLC
Interventions
Not listed
Lead sponsor
Biodesix, Inc.
Industry
Eligibility
40 Years and older
Enrollment
842 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
15
States / cities
Sun City, Arizona • Northridge, California • Pueblo, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated May 24, 2024 · Synced Oct 21, 2026, 10:34 PM EDT
Recruiting No phase listed Observational

HF2 Registry - Hemodynamic Frontiers in Heart Failure Registry

NCT06425848
View directory record Official record
Conditions
Heart Failure
Interventions
Observational
Device
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 100 Years
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2030
U.S. locations
12
States / cities
La Jolla, California • Bloomington, Indiana • Kansas City, Kansas + 9 more
Source: ClinicalTrials.gov public record
Updated May 22, 2024 · Synced Oct 21, 2026, 10:34 PM EDT