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ClinicalTrials.gov public records Last synced Oct 18, 2026, 8:09 AM EDT

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

Showing 481–504 of 4,385 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Observational study Clear all
Completed No phase listed Observational

Interagency Registry for Mechanically Assisted Circulatory Support (Intermacs)

NCT00119834
View directory record Official record
Conditions
Cardiovascular Diseases, Heart Diseases, Heart Failure, Congestive
Interventions
Mechanical Circulatory Support Device (MCSD)
Device
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
1 Day and older
Enrollment
23,472 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2017
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 9, 2018 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Bipolar and Schizophrenia Consortium for Parsing Intermediate Phenotypes

NCT00666432
View directory record Official record
Conditions
Schizophrenia, Bipolar
Interventions
This is an observational study model that is family based
Other
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
15 Years and older
Enrollment
3,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2019
U.S. locations
6
States / cities
Hartford, Connecticut • Chicago, Illinois • Baltimore, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated May 3, 2021 · Synced Oct 18, 2026, 8:09 AM EDT
Recruiting Not applicable Interventional

The LYMPH Trial - Microsurgical Versus Conservative Treatment of Chronic Breast Cancer Associated Lymphedema

NCT05890677
View directory record Official record
Conditions
Lymphedema, Breast Cancer
Interventions
Surgical Intervention, Conservative Complex Physical Decongestion Therapy
Procedure
Lead sponsor
University Hospital, Basel, Switzerland
Other
Eligibility
18 Years and older
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2036
U.S. locations
4
States / cities
New Haven, Connecticut • Boston, Massachusetts • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 18, 2026, 8:09 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Establishing Normal Cognitive Test Scores for Adults Using a Voice-Enabled Digital Testing Platform Across the Lifespan

NCT07763392
View directory record Official record
Conditions
Cognition, Cognition Disorders, Cognition - Other, Dementia, Alzheimer Disease, Memory, Neurocognition
Interventions
Voice-based Cognitive Testing
Diagnostic Test
Lead sponsor
The Neurology Center of Southern California
Other
Eligibility
18 Years to 100 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Carlsbad, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 18, 2026, 8:09 AM EDT
Recruiting Phase 1Phase 2 Interventional

Pre-emptive Therapy With DEC-C to Improve Outcomes in MDS Patients With Measurable Residual Disease Post Allogeneic Hematopoietic Cell Transplant

NCT04742634
View directory record Official record
Conditions
Myelodysplastic Syndromes
Interventions
DEC-C, MyeloSeq-HD
Drug · Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
209 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2033
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational

Transfusion Requirements During Spinal Surgery for Severe Scoliosis

NCT01490164
View directory record Official record
Conditions
Scoliosis
Interventions
Not listed
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
Up to 19 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 13, 2013 · Synced Oct 18, 2026, 8:09 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

ASSESS ALL ALS Study

NCT06578195
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
Not listed
Lead sponsor
St. Joseph's Hospital and Medical Center, Phoenix
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
36
States / cities
Birmingham, Alabama • Phoenix, Arizona • Irvine, California + 31 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Oct 18, 2026, 8:09 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Maternal Choline Supplementation and Cannabis Use During Pregnancy: Impact on Early Brain Development

NCT06379971
View directory record Official record
Conditions
Child Development, Cannabis Use
Interventions
Placebo, Choline
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational

An Observational Study in Differentiated Thyroid Cancer Which is Radioactive Iodine (RAI) Refractory to Assess the Use of Multikinase Inhibitors

NCT02303444
View directory record Official record
Conditions
Thyroid Neoplasms
Interventions
Sorafenib (Nexavar, BAY43-9006), Other Multikinase inhibitors
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older
Enrollment
667 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
16
States / cities
Birmingham, Alabama • Los Angeles, California • Torrance, California + 13 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2023 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Lorcaserin: Real World Experience in an Insurance-Based Weight Management Clinic

NCT03552107
View directory record Official record
Conditions
Obesity, Weight Loss, Overweight
Interventions
Lorcaserin
Drug
Lead sponsor
Scripps Whittier Diabetes Institute
Other
Eligibility
18 Years and older
Enrollment
157 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Oct 18, 2026, 8:09 AM EDT
Completed Not applicable Interventional

Distracting Through Procedural Pain and Distress

NCT04892160
View directory record Official record
Conditions
Chronic Illness, Hematologic Malignancy, Bone Marrow Transplant Infection, Oncology, Sickle Cell Disease
Interventions
Guided Imagery, Virtual Reality
Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
8 Years to 25 Years
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
2
States / cities
Milwaukee, Wisconsin • Wauwatosa, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 19, 2021 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

An Observational Clinical Study of the T3 Dental Implant System

NCT05062863
View directory record Official record
Conditions
Edentulous Jaw
Interventions
T3 dental implant system
Device
Lead sponsor
ZimVie
Industry
Eligibility
18 Years and older
Enrollment
139 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
3
States / cities
Gainesville, Florida • Neptune City, New Jersey • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Oct 18, 2026, 8:09 AM EDT
Terminated No phase listed Observational

VitalScan MCG Rule-out Multi-centre Pivotal Study - US

NCT03546933
View directory record Official record
Conditions
Acute Coronary Syndrome
Interventions
VitalScan Magnetocardiograph
Device
Lead sponsor
Creavo Medical Technologies Ltd
Industry
Eligibility
18 Years and older
Enrollment
651 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
5
States / cities
Indianapolis, Indiana • Winston-Salem, North Carolina • Cincinnati, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2019 · Synced Oct 18, 2026, 8:09 AM EDT
Completed Not applicable Interventional Results available

Dietary Treatment Study of Pediatric NAFLD

NCT02513121
View directory record Official record
Conditions
Nonalcoholic Fatty Liver Disease
Interventions
Dietary modification
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
11 Years to 16 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
2
States / cities
San Diego, California • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 28, 2020 · Synced Oct 18, 2026, 8:09 AM EDT
Recruiting No phase listed Observational

Key Longitudinal Associations With Risk and Glioblastoma Outcomes

NCT06625684
View directory record Official record
Conditions
Glioblastoma
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational

Observational Study of Treated and Untreated Acute and Early HIV-1 Infection

NCT00219934
View directory record Official record
Conditions
HIV Infections
Interventions
Antiretroviral therapy
Drug
Lead sponsor
Rockefeller University
Other
Eligibility
16 Years and older
Enrollment
399 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 17, 2012 · Synced Oct 18, 2026, 8:09 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

The Covid-19 HEalth caRe wOrkErS (HEROES) Study

NCT04352634
View directory record Official record
Conditions
Covid-19, Mental Health Disorder, Stress Disorder, Anxiety, Depression, SARS-CoV-2
Interventions
Exposure to the SARS-CoV-2 and its consequences
Other
Lead sponsor
University of Chile
Other
Eligibility
18 Years and older
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 1, 2021 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

St. Mary's Duluth Clinic (SMDC) Pacemaker Magnetic Resonance Imaging (MRI) Study

NCT00631904
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Not listed
Lead sponsor
Essentia Health
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2011
U.S. locations
1
States / cities
Duluth, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 2, 2011 · Synced Oct 18, 2026, 8:09 AM EDT
Not listed No phase listed Observational

Short Term Status of Free Dermal Fat Autografts for Complex Craniofacial Wounds

NCT03872544
View directory record Official record
Conditions
Wound; Head, Multiple, Wound; Head, Scalp, Wound; Head, Wound Infection, Wound Complication, Wound Dehiscence, Wound of Skin, Wound Open, Wounds, Penetrating, Wounds, Nonpenetrating, Wounds and Injuries, Wounds, Disturbance of Wound Healing, Facial Bones Fracture, Soft Tissue Injuries, Skull Fractures, Surgical Wound, Surgical Wound Infection, Wound Healing
Interventions
Not listed
Lead sponsor
Dufresne, Craig, MD, PC
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fairfax, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 16, 2022 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational

Patient Reported Outcomes in Adults With Pediatric-onset Hypophosphatasia Treated With Strensiq® (Asfotase Alfa)

NCT04195763
View directory record Official record
Conditions
Hypophosphatasia
Interventions
asfotase alfa
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 99 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Palm Harbor, Florida
Source: ClinicalTrials.gov public record
Updated Jul 10, 2024 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational

Assessing Change in Patient-reported Quality of Life After Elective Surgery: an Observational Comparison Study

NCT02771964
View directory record Official record
Conditions
Quality of Life, Surgical Procedure, Unspecified
Interventions
Quality of life survey
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
17,850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 12, 2019 · Synced Oct 18, 2026, 8:09 AM EDT
Completed Phase 1 Interventional

A Clinical and Histological Analysis of Mesenchymal Stem Cells in Amputation

NCT02685098
View directory record Official record
Conditions
Ischemia, Peripheral Arterial Disease, Peripheral Vascular Disease, Vascular Disease, Arterial Occlusive Disease, Arteriosclerosis, Atherosclerosis, Cardiovascular Disease, Pathologic Processes, Orthopedic Procedures, Amputation
Interventions
Allogeneic bone marrow derived mesenchymal stem cells
Biological
Lead sponsor
Indiana University
Other
Eligibility
40 Years to 90 Years
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Oct 18, 2026, 8:09 AM EDT
Completed No phase listed Observational

Carotid Ultrasound Sub-Study of the Familial Atherosclerosis Study-observational Study

NCT00976014
View directory record Official record
Conditions
Carotid Stenosis
Interventions
Not listed
Lead sponsor
University of Washington
Other
Eligibility
Male only
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 16, 2021 · Synced Oct 18, 2026, 8:09 AM EDT
Not listed No phase listed Observational

Observational Study of the Sleuth Implantable ECG Monitoring System

NCT00717106
View directory record Official record
Conditions
Syncope, Presyncope, Fainting, Cardiac Arrhythmia
Interventions
Not listed
Lead sponsor
Transoma Medical
Industry
Eligibility
Not listed
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
8
States / cities
Atlanta, Georgia • Cumberland, Maryland • Lapeer, Michigan + 5 more
Source: ClinicalTrials.gov public record
Updated May 5, 2009 · Synced Oct 18, 2026, 8:09 AM EDT