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ClinicalTrials.gov public records Last synced Oct 30, 2026, 8:17 AM EDT

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

Showing 145–168 of 2,011 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Observational Study Clear all
Completed No phase listed Observational Accepts healthy volunteers

KYleena Satisfaction Study / Observational Study on User Satisfaction With the Levonorgestrel Intrauterine Delivery System Kyleena (LNG-IUS 12) in New Contraceptive Users and After Switching From Another Contraceptive Method

NCT03182140
View directory record Official record
Conditions
Contraception
Interventions
Kyleena
Drug
Lead sponsor
Bayer
Industry
Eligibility
Female only
Enrollment
1,134 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
12
States / cities
Lakewood, Colorado • Sarasota, Florida • Wellington, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2021 · Synced Oct 30, 2026, 8:17 AM EDT
Completed No phase listed Observational

Study to Determine if Avonex and Rebif Work Comparably Well in Subjects With Relapsing Multiple Sclerosis

NCT00599274
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Interferon beta-1a
Drug
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 50 Years
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
8
States / cities
Los Angeles, California • Walnut Creek, California • Shreveport, Louisiana + 5 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2010 · Synced Oct 30, 2026, 8:17 AM EDT
Recruiting No phase listed Observational

Vascular Events In Patients Undergoing Same-day Noncardiac Surgery (VALIANCE) Study

NCT04973397
View directory record Official record
Conditions
Preoperative Care, Surgery--Complications, Myocardial Infarction
Interventions
Not listed
Lead sponsor
Centre hospitalier de l'Université de Montréal (CHUM)
Other
Eligibility
45 Years and older
Enrollment
15,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
5
States / cities
Winston-Salem, North Carolina • Cleveland, Ohio • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Oct 30, 2026, 8:17 AM EDT
Recruiting No phase listed Observational

COOL-IT-PRO: Cryoablation of Breast Cancer in Non-surgical Patients

NCT05972343
View directory record Official record
Conditions
Breast Cancer, Cancer of the Breast
Interventions
Cryoablation
Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2031
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Oct 30, 2026, 8:17 AM EDT
Terminated Phase 2 Interventional Results available

Letrozole Versus Observation in Patients With Newly Diagnosed Uterine Leiomyosarcoma

NCT00414076
View directory record Official record
Conditions
Leiomyosarcoma, Uterine Neoplasm
Interventions
Letrozole
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 20, 2018 · Synced Oct 30, 2026, 8:17 AM EDT
Completed No phase listed Observational Results available

Control-IQ Observational (CLIO) Post-Approval Study

NCT04503174
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
t:slim X2 pump with Control-IQ technology
Device
Lead sponsor
Tandem Diabetes Care, Inc.
Industry
Eligibility
6 Years and older
Enrollment
3,157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 8, 2023 · Synced Oct 30, 2026, 8:17 AM EDT
Recruiting No phase listed Observational

Efficacy, Safety & Utilisation of Nuwiq, Octanate and Wilate in Previously Untreated & Minimally Treated Haemophilia A Patients

NCT03695978
View directory record Official record
Conditions
Haemophilia A
Interventions
Not listed
Lead sponsor
Octapharma
Industry
Eligibility
Not listed
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2030
U.S. locations
5
States / cities
Miami, Florida • New Orleans, Louisiana • St Louis, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Oct 30, 2026, 8:17 AM EDT
Completed No phase listed Observational Results available

Safety and Effectiveness of BENLYSTA (Belimumab) in Systemic Lupus Erythematosus (SLE) Registry

NCT01729455
View directory record Official record
Conditions
Systemic Lupus Erythematosus
Interventions
Benlysta, Standard of Care (SoC) Therapy
Biological · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
3,138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2025
U.S. locations
102
States / cities
Birmingham, Alabama • Glendale, Arizona • Goodyear, Arizona + 85 more
Source: ClinicalTrials.gov public record
Updated Mar 20, 2026 · Synced Oct 30, 2026, 8:17 AM EDT
Active, not recruiting No phase listed Observational

Fragility Fractures of the Pelvis (FFP)

NCT04182776
View directory record Official record
Conditions
Pelvic Fracture
Interventions
Not listed
Lead sponsor
AO Innovation Translation Center
Other
Eligibility
65 Years and older
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 30, 2026, 8:17 AM EDT
Terminated Phase 3 Interventional Results available

Microsurgical Varicocelectomy Versus No Surgery in Men With a Palpable Varicocele and an Abnormal Semen Analysis

NCT00767338
View directory record Official record
Conditions
Pregnancy, Infertility
Interventions
Timed intercourse, Microsurgical varicocelectomy, Intrauterine insemination
Behavioral · Procedure
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
9
States / cities
Aurora, Colorado • New Haven, Connecticut • Ann Arbor, Michigan + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2013 · Synced Oct 30, 2026, 8:17 AM EDT
Active, not recruiting No phase listed Observational

CRC Detection Reliable Assessment With Blood

NCT05551052
View directory record Official record
Conditions
Colorectal Cancer, Adenomas Colon, Colon Cancer, Rectal Cancer, Colon Neoplasm, Colon Lesion, Colon Disease, Colon Polyp, Polyps, Adenoma, Rectal Diseases, Rectal Polyp, Gastrointestinal Neoplasms, Intestinal Neoplasms, Colonic Diseases, Functional, Intestinal Disease
Interventions
Next-Gen CRC Screening Test
Diagnostic Test
Lead sponsor
New Day Diagnostics
Network
Eligibility
45 Years and older
Enrollment
196 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
3
States / cities
Chula Vista, California • San Diego, California
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Oct 30, 2026, 8:17 AM EDT
Completed Phase 2 Interventional

A Study to Compare Anti-HIV Drugs Given Twice a Day or Once a Day, With or Without Direct Observation

NCT00036452
View directory record Official record
Conditions
HIV Infections
Interventions
lopinavir/ritonavir, emtricitabine, stavudine, tenofovir DF
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
402 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2006
U.S. locations
27
States / cities
Los Angeles, California • Sacramento, California • San Diego, California + 20 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2021 · Synced Oct 30, 2026, 8:17 AM EDT
Completed No phase listed Observational

Glycemic Observation and Metabolic Outcomes in Mothers and Offspring

NCT04860336
View directory record Official record
Conditions
Gestational Diabetes, Pregnancy Related
Interventions
Observational
Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
2,179 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
9
States / cities
New Haven, Connecticut • Honolulu, Hawaii • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Oct 30, 2026, 8:17 AM EDT
Completed No phase listed Observational

Donor Breast Milk and Serum Ferritin Levels in Very Preterm Infants

NCT06843278
View directory record Official record
Conditions
Ferritin Levels in Very Preterm Infants
Interventions
maternal breast milk, Donor breast milk
Other
Lead sponsor
AdventHealth
Other
Eligibility
2 Weeks to 4 Weeks
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Oct 30, 2026, 8:17 AM EDT
Recruiting Phase 2 Interventional

Hypofractionated Radiotherapy Followed by Surgical Resection in the Treatment of Soft Tissue Sarcomas

NCT04506008
View directory record Official record
Conditions
Soft Tissue Sarcomas
Interventions
Ultra-Hypo-fractionation Radiotherapy, Resection, Questionnaire Administration, Moderately-Hypo-fractionation Radiotherapy
Radiation · Procedure · Other
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 28, 2025 · Synced Oct 30, 2026, 8:17 AM EDT
Completed Not applicable Interventional Results available

Electrically Evoked Compound Action Potentials Human Observation Medtronic Algorithm Comparison Study

NCT04765735
View directory record Official record
Conditions
Chronic Pain
Interventions
Open-loop testing, Closed-loop testing - External Spinal Cord Stimulator (SCS)
Device
Lead sponsor
MedtronicNeuro
Industry
Eligibility
22 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
9
States / cities
Carlsbad, California • Duluth, Minnesota • Edina, Minnesota + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2024 · Synced Oct 30, 2026, 8:17 AM 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 30, 2026, 8:17 AM EDT
Completed No phase listed Observational

Grass Observational Study

NCT02075138
View directory record Official record
Conditions
Grass Allergy, Rhinoconjunctivitis
Interventions
Not listed
Lead sponsor
Circassia Limited
Industry
Eligibility
12 Years to 65 Years
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
5
States / cities
Washington D.C., District of Columbia • Normal, Illinois • Sylvania, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2015 · Synced Oct 30, 2026, 8:17 AM EDT
Recruiting No phase listed Observational

Early Detection of COPD Exacerbations Using Home Monitoring Device

NCT07554352
View directory record Official record
Conditions
COPD Exacerbation
Interventions
RespirAI
Device
Lead sponsor
RespirAI US Inc
Industry
Eligibility
21 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Oct 30, 2026, 8:17 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

REFINE Study: A Study In a Novel Interspinous Fusion Device In Subjects With Low Back Pain

NCT05504499
View directory record Official record
Conditions
Lumbar Spinal Stenosis
Interventions
Interspinous Fusion
Device
Lead sponsor
Pacific Research Institute
Network
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2028
U.S. locations
10
States / cities
Santa Rosa, California • Jupiter, Florida • Slidell, Louisiana + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Oct 30, 2026, 8:17 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Single-incision Sling vs Urethral Bulking During Prolapse Surgery for Occult Stress Incontinence

NCT05210738
View directory record Official record
Conditions
Stress Incontinence, Female
Interventions
Single incision sling, Bulkamid bulking agent
Device · Drug
Lead sponsor
The Christ Hospital
Other
Eligibility
18 Years to 85 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 27, 2022 · Synced Oct 30, 2026, 8:17 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Advancing Stillbirth Prevention Through Innovative Risk Evaluation (ASPIRE) Clinical Study

NCT07669935
View directory record Official record
Conditions
GDM, Preterm Preeclampsia, Preeclampsia, Fetal Growth Restriction (FGR), Pregnancy Complications
Interventions
None (this is an observational study with no intervention)
Other
Lead sponsor
Medicines360
Other
Eligibility
18 Years to 99 Years · Female only
Enrollment
5,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
2
States / cities
Baton Rouge, Louisiana • Potsdam, New York
Source: ClinicalTrials.gov public record
Updated Sep 30, 2026 · Synced Oct 30, 2026, 8:17 AM EDT
Withdrawn No phase listed Observational

Sonic Window Study Evaluation Plan

NCT02137148
View directory record Official record
Conditions
Non-palpable Veins
Interventions
Use of Ultrasound to assist in needle placement
Device
Lead sponsor
Analogic Corporation
Industry
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Englewood, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 4, 2015 · Synced Oct 30, 2026, 8:17 AM EDT
Recruiting No phase listed Observational

Observational Study of Cardiac Arrhythmias During Treatment With BTK Inhibitors or Venetoclax

NCT05724121
View directory record Official record
Conditions
Chronic Lymphocytic Leukemia (CLL), Waldenstr(SqrRoot)(Delta)m s Macroglobulinemia, Mantle Cell Lymphoma, Sudden Cardiac Death, Cardiac Arrhythmias, Hematologic Malignancies
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 110 Years
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 29, 2026 · Synced Oct 30, 2026, 8:17 AM EDT