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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Intervention N/A. Observational study Clear all
Recruiting No phase listed Observational

Phase I Human Analytics (HALO) Study

NCT05423860
View directory record Official record
Conditions
Cardiovascular Diseases, Cancer, Dementia, Traumatic Brain Injury
Interventions
no interventions will be performed (observational)
Other
Lead sponsor
HALO Diagnostics
Industry
Eligibility
45 Years to 90 Years · Male only
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2037
U.S. locations
1
States / cities
Indian Wells, California
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced Sep 26, 2026, 2:24 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Transformative Research in Diabetic Nephropathy 2.0

NCT07444203
View directory record Official record
Conditions
Diabetic Nephropathies, Kidney Diseases, Renal Insufficiency, Chronic, Diabetes Mellitus, Type 2
Interventions
Sodium-glucose cotransporter 2 inhibitors (SGLT2i), Renin-angiotensin-aldosterone system blockade, Glucagon-like peptide-1 receptor agonists (GLP 1 RA), Mineralocorticoid Receptor Antagonists(MRAs)
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of Military Service and Family Members for Post Concussive and Posttraumatic Stress Symptoms

NCT03191357
View directory record Official record
Conditions
TBI (Traumatic Brain Injury)
Interventions
n/a observational
Other
Lead sponsor
Uniformed Services University of the Health Sciences
Federal
Eligibility
18 Years and older
Enrollment
424 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 16, 2020 · Synced Sep 26, 2026, 2:24 AM EDT
Completed Not applicable Interventional

Teaching Skin Self -Examination to Melanoma Patients and Their Skin Check Partners

NCT02854657
View directory record Official record
Conditions
Melanoma
Interventions
Skin Self- examination structured training
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 70 Years
Enrollment
682 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 10, 2021 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational

A Study to Describe the Characteristics, Health Care Interventions and Outcomes of Patients With Major Bleedings in the Presence of Factor Xa Inhibitor Treatment

NCT06147830
View directory record Official record
Conditions
Major Bleeding
Interventions
None (Observational study)
Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
2,202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
25
States / cities
Chandler, Arizona • Orange, California • Sacramento, California + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 2, 2025 · Synced Sep 26, 2026, 2:24 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Neural and Cognitive Consequences of COVID-19 Survival

NCT06208943
View directory record Official record
Conditions
COVID Long-Haul, COVID-19, COVID-19 Pandemic, Brain Fog, Memory Deficits, Concentration Ability Impaired, Fatigue
Interventions
cross-sectional MRI and EEG assessments (NO INTERVENTION)
Other
Lead sponsor
San Francisco Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 11, 2024 · Synced Sep 26, 2026, 2:24 AM EDT
Enrolling by invitation No phase listed Observational

Blood Flow Restriction Following ACLR w/Quad Autograft

NCT06636045
View directory record Official record
Conditions
Autografts, Blood Flow Restriction Therapy, Rehabilitation Outcome, Quadriceps Muscle Strength, Anterior Cruciate Ligament Reconstruction
Interventions
Not applicable- observational study
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
14 Years to 40 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Apr 5, 2025 · Synced Sep 26, 2026, 2:24 AM EDT
Recruiting No phase listed Observational

Long-term Safety of Eplontersen Treated aTTR Patients and in Liver Transplant and Severely Hepatic Impaired Subpopulations

NCT07654855
View directory record Official record
Conditions
Transthyretin Amyloidosis, Transthyretin Amyloidosis With Cardiomyopathy, Transthyretin Amyloidosis With Polyneuropathy
Interventions
None ( observational study )
Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
320 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2032
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 13, 2026 · Synced Sep 26, 2026, 2:24 AM 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 15, 2024 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

E-Cigarettes: Dynamic Patterns of Use and Health Effects

NCT02527980
View directory record Official record
Conditions
Smoking, Nicotine Dependence
Interventions
No intervention: observation only
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 99 Years
Enrollment
422 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
2
States / cities
Madison, Wisconsin • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 9, 2019 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational Results available

Developing a Down Syndrome Health Instrument

NCT04631237
View directory record Official record
Conditions
Down Syndrome, Health, Subjective
Interventions
Observational, no intervention
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
758 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 26, 2026 · Synced Sep 26, 2026, 2:24 AM EDT
Recruiting Phase 2 Interventional

Stereotactic Body Radiation Therapy Plus Immediate or Delayed Androgen Receptor Pathway Inhibitor and Androgen Deprivation Therapy or Salvage Radiation Therapy for the Treatment of Prostate Cancer, DIVINE Trial

NCT06378866
View directory record Official record
Conditions
Recurrent Castration-Sensitive Prostate Carcinoma, Recurrent Prostate Cancer, Castration-resistant Prostate Cancer, Biochemically Recurrent Prostate Carcinoma
Interventions
Abiraterone, Apalutamide, Biospecimen Collection, Bone Scan, Computed Tomography, Darolutamide, Degarelix, Enzalutamide, Goserelin, Histrelin, Leuprolide, Magnetic Resonance Imaging, Patient Observation, Positron Emission Tomography, Prednisone, Questionnaire Administration, Relugolix, Stereotactic Body Radiation Therapy, Triptorelin, Radiation Therapy, Image-Guided Therapy
Drug · Procedure · Other + 1 more
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Male only
Enrollment
532 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
3
States / cities
Phoenix, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sputum Studies of Anti-Citrullinated Protein Antibodies (ACPA) and Rheumatoid Arthritis (RA) Origins

NCT04474392
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
N/A (Observational Study)
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 100 Years
Enrollment
340 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational

Voice Technology to Identify Opioid Use

NCT07603778
View directory record Official record
Conditions
Opioid Use
Interventions
Not applicable- observational study
Other
Lead sponsor
Tenvos Inc.
Industry
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational

A Study of the Incidence of Intraocular Inflammation and Suspected Endophthalmitis Among Patients Treated With Aflibercept, Vial and Pre-filled Syringe, 2014-2022

NCT05791695
View directory record Official record
Conditions
Intraocular Inflammation, Suspected Endophthalmitis
Interventions
Non Applicable
Other
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
155,413 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Nov 30, 2023 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational

TrinetX Study of Hypereosinophilic Syndrome (HES) Without an Identifiable Non-haematological Secondary Cause

NCT06172751
View directory record Official record
Conditions
Hypereosinophilic Syndrome (HES)
Interventions
no intervention
Other
Lead sponsor
AstraZeneca
Industry
Eligibility
Not listed
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 11, 2025 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational

An Observational Study of Environmental and SocioEconomic Factors in Opioid Recovery

NCT03604861
View directory record Official record
Conditions
Opioid-use Disorder, Opioid-related Disorders
Interventions
Not applicable - no defined intervention
Other
Lead sponsor
Indivior Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
534 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
35
States / cities
Haleyville, Alabama • Hamilton, Alabama • Little Rock, Arkansas + 30 more
Source: ClinicalTrials.gov public record
Updated Apr 17, 2019 · Synced Sep 26, 2026, 2:24 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Clinical Time and Temporal Dynamics Study (CLIN-TIME)

NCT07812831
View directory record Official record
Conditions
Longitudinal Studies, Prospective Studies, Biomarkers, Predictive Value of Tests, Telemedicine, Time of Death, Time Perception, Time Reaction, Time Efficiency, Time Management, Population, Population Groups, Epidemic Disease, Pandemic, Sex Behavior, Sex Characteristics, Sex Hormone, Cardio-pulmonary, Surgical, Drugs of Abuse, Health Risks, Clinical Outcomes
Interventions
No Study-Assigned Intervention
Other
Lead sponsor
Truway Health, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2076
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Fecal Microbiota Transplantation (FMT) in Multiple Sclerosis

NCT03975413
View directory record Official record
Conditions
Multiple Sclerosis, Relapsing-Remitting
Interventions
Fecal Microbiota Transplantation (FMT)
Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 7, 2020 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational

Initial and Chronic Methicillin Resistant Staphylococcus Aureus (MRSA) Infection in Cystic Fibrosis (CF)

NCT02684422
View directory record Official record
Conditions
Methicillin-Resistant Staphylococcus Aureus, Cystic Fibrosis
Interventions
Intervention N/A. Observational study
Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
4 Years to 99 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
3
States / cities
Birmingham, Alabama • Chapel Hill, North Carolina • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 19, 2022 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational

Historical Data Analysis of Hematological Remission and Survival in Adults With R/R Acute Lymphoblastic Leukemia

NCT02003612
View directory record Official record
Conditions
Acute Lymphoblastic Leukemia
Interventions
Not applicable - observational study
Other
Lead sponsor
Amgen
Industry
Eligibility
15 Years and older
Enrollment
2,373 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
2
States / cities
Boston, Massachusetts • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 6, 2022 · Synced Sep 26, 2026, 2:24 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Specimen and Data Collection in South Carolina Medicaid-Enrolled Patients With Type 2 Diabetes (T2D) and Metabolically Healthy Controls

NCT07731399
View directory record Official record
Conditions
Type 2 Diabetes, Healthy (Controls)
Interventions
Not applicable- observational study
Other
Lead sponsor
Guardian Research Network, Inc.
Other
Eligibility
40 Years to 70 Years
Enrollment
1,200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
2
States / cities
Orangeburg, South Carolina • Walhalla, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 26, 2026, 2:24 AM EDT
Completed No phase listed Observational

Studying Rehabilitation Treatments Using Video to Improve Recovery for Adults With Physical Disabilities

NCT07092293
View directory record Official record
Conditions
Stroke, Spinal Cord Injury, Occupational Therapy
Interventions
occupational therapy
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 26, 2026, 2:24 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Kesimpta (Ofatumumab) Pregnancy Registry

NCT05634967
View directory record Official record
Conditions
Multiple Sclerosis, Pregnancy
Interventions
Kesimpta
Other
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
725 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2033
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2025 · Synced Sep 26, 2026, 2:24 AM EDT