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ClinicalTrials.gov public records Last synced Oct 18, 2026, 1:08 AM EDT

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

Showing 337–360 of 4,385 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Observational study Clear all
Active, not recruiting No phase listed Observational

A Study to Learn How Avacincaptad Pegol (Izervay™) is Used in Clinical Practice in People Who Have Geographic Atrophy

NCT06779773
View directory record Official record
Conditions
Geographic Atrophy, Macular Degeneration
Interventions
Avacincaptad pegol (ACP)
Drug
Lead sponsor
Astellas Pharma Global Development, Inc.
Industry
Eligibility
Not listed
Enrollment
489 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
58
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Laguna Hills, California + 53 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Oct 18, 2026, 1:08 AM EDT
Recruiting No phase listed Observational

A Prospective Registry Study to Assess Real-world Patient Characteristics, Treatment Patterns, and Longitudinal Outcomes in Patients Receiving Mavacamten and Other Treatments for Symptomatic Obstructive Hypertrophic Cardiomyopathy (Obstructive-HCM)

NCT05489705
View directory record Official record
Conditions
Obstructive Hypertrophic Cardiomyopathy
Interventions
Mavacamten, Non-mavacamten symptomatic oHCM therapy
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
1,700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
60
States / cities
Anchorage, Alaska • Tucson, Arizona • Little Rock, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 18, 2026, 1:08 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 18, 2026, 1:08 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Project 1: Diet and Exercise Modulate the Sperm Epigenome in Men

NCT04175678
View directory record Official record
Conditions
Healthy Lifestyle, Obese, Men
Interventions
Diet, Exercise, Standard care
Other
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Osteogenesis Imperfecta Blood Pressure Study

NCT04169568
View directory record Official record
Conditions
Osteogenesis Imperfecta
Interventions
Manual cuff blood pressure
Procedure
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
1 Year to 35 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Wilmington, Delaware
Source: ClinicalTrials.gov public record
Updated May 14, 2025 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational

To Assess the Effectiveness and Safety of Zepzelca in Adult Patients With Extensive Stage Small Cell Lung Cancer (SCLC)

NCT04894591
View directory record Official record
Conditions
Extensive-stage Small-cell Lung Cancer
Interventions
Zepzelca
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
272 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
32
States / cities
Huntsville, Alabama • Norwich, Connecticut • Brooksville, Florida + 29 more
Source: ClinicalTrials.gov public record
Updated Feb 27, 2026 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational Results available

A Study of Suboptimally Controlled Participants Previously Taking Injectable DMDs for RMS (CLICK-MS)

NCT03933215
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Cladribine
Drug
Lead sponsor
EMD Serono Research & Development Institute, Inc.
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
18
States / cities
Little Rock, Arkansas • Englewood, Colorado • Fort Collins, Colorado + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2025 · Synced Oct 18, 2026, 1:08 AM EDT
Not listed No phase listed Observational

Healthcare Decisions on Dietary and Environmental Allergen Exposure

NCT03144908
View directory record Official record
Conditions
Dietary Allergy, Environmental Allergy
Interventions
Standard Operating Procedures
Other
Lead sponsor
Data Collection Analysis Business Management
Other
Eligibility
Not listed
Enrollment
200 participants
Timeline
2017 – 2020
U.S. locations
1
States / cities
Land O' Lakes, Florida
Source: ClinicalTrials.gov public record
Updated Jan 23, 2019 · Synced Oct 18, 2026, 1:08 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Collection and Distribution of Biospecimens for Novel Research

NCT05080907
View directory record Official record
Conditions
Cancer, Healthy, Gastrointestinal Complication, Autoimmune Diseases, Infectious Disease, Women's Health: High-Risk Pregnancy, Dermatologic Disease, Blood Disease
Interventions
Observational
Other
Lead sponsor
iSpecimen Inc
Industry
Eligibility
1 Year to 99 Years
Enrollment
100,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2025
U.S. locations
7
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 9, 2022 · Synced Oct 18, 2026, 1:08 AM EDT
Completed Phase 3 Interventional

Safety and Efficacy Study of Vitrase for Clearance of Severe Vitreous Hemorrhage

NCT00198510
View directory record Official record
Conditions
Vitreous Hemorrhage, Diabetic Retinopathy
Interventions
Vitrase
Drug
Lead sponsor
Bausch & Lomb Incorporated
Industry
Eligibility
18 Years and older
Enrollment
750 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2003
U.S. locations
61
States / cities
Tucson, Arizona • Beverly Hills, California • Chula Vista, California + 51 more
Source: ClinicalTrials.gov public record
Updated Mar 15, 2013 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational

Electroencephalographic Changes Under General Anesthesia in Patients With Gynecologic Cancers With and Without History of Chemotherapy

NCT04593550
View directory record Official record
Conditions
Malignant Female Reproductive System Neoplasm
Interventions
Biospecimen Collection, BrainCheck Cognitive Assessment, Cognitive Assessment, Electroencephalography
Procedure · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
40 Years to 60 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 21, 2023 · Synced Oct 18, 2026, 1:08 AM EDT
Terminated No phase listed Observational

HIV-1 Viral Dynamics in Subjects Initiating Raltegravir Therapy

NCT00709397
View directory record Official record
Conditions
HIV-1 Infection
Interventions
blood drawing
Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 2, 2010 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Metabolomics During Testosterone Therapy

NCT01963390
View directory record Official record
Conditions
Testosterone Deficiency
Interventions
Testosterone Therapy
Drug
Lead sponsor
Men's Health Boston
Other
Eligibility
20 Years to 90 Years · Male only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2017
U.S. locations
1
States / cities
Chestnut Hill, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 19, 2018 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational Results available

Prospective Observational Long-term Safety Registry of Multiple Sclerosis Participants Who Have Participated in Cladribine Clinical Trials

NCT01013350
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Not listed
Lead sponsor
EMD Serono
Industry
Eligibility
Not listed
Enrollment
1,161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2018
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 15, 2019 · Synced Oct 18, 2026, 1:08 AM EDT
Completed Not applicable Interventional Results available

Vidatalk Communication Application: Usability, Acceptability and Efficacy Study

NCT02921776
View directory record Official record
Conditions
Nonverbal Communication, Critical Illness
Interventions
Aim 1 - VidaTalk - post-extubation, Aim 2 - VidaTalk - intubated, Aim 3 - VidaTalk tablet app, Aim 3 - attention-control with non-VidaTalk tablet
Other · Device
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 99 Years
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 31, 2022 · Synced Oct 18, 2026, 1:08 AM EDT
Terminated No phase listed Observational

Allosure in Simultaneous Pancreas Kidney Transplant

NCT04777617
View directory record Official record
Conditions
Kidney Pancreas Transplant
Interventions
DD-cfDNA
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
13 participants
Timeline
2021 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 7, 2024 · Synced Oct 18, 2026, 1:08 AM EDT
Recruiting Phase 2 Interventional

Expanding Liver Transplant Immunosuppression Minimization Via Everolimus

NCT06280950
View directory record Official record
Conditions
Liver Transplant
Interventions
Everolimus, Tacrolimus (continued reduction), Tacrolimus (maintain 50% reduction)
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
12
States / cities
Phoenix, Arizona • Los Angeles, California • San Diego, California + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Oct 18, 2026, 1:08 AM EDT
Terminated No phase listed Observational

REDAPT Retrospective-Prospective Modular Stem Study

NCT02661620
View directory record Official record
Conditions
Arthroplasties, Hip Replacement
Interventions
REDAPT Revision Femoral System modular stem
Device
Lead sponsor
Smith & Nephew, Inc.
Industry
Eligibility
Not listed
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
3
States / cities
Louisville, Kentucky • Detroit, Michigan • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 2, 2024 · Synced Oct 18, 2026, 1:08 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Acute Mechanical Response to Anti-arrhythmic Drug Therapy

NCT02575534
View directory record Official record
Conditions
Arrhythmias
Interventions
Procainamide
Drug
Lead sponsor
Evan Adelstein, MD
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 28, 2018 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational

A Study of HIV Levels During Pregnancy and After Childbirth

NCT00041964
View directory record Official record
Conditions
HIV Infections, Pregnancy
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older · Female only
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
31
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 21 more
Source: ClinicalTrials.gov public record
Updated Jul 24, 2012 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational

A Real-world Study to Assess the Use of Siponimod in Spain to Treat Patients With Secondary Progressive Multiple Sclerosis

NCT06588387
View directory record Official record
Conditions
Secondary Progressive Multiple Sclerosis
Interventions
Not listed
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 18, 2026, 1:08 AM EDT
Active, not recruiting No phase listed Observational Results available

Treatment Effects on Development of Chemotherapy-Induced Peripheral Neuropathy in Patients With Cancer

NCT03939481
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage IA Breast Cancer AJCC v8, Anatomic Stage IB Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage IIA Breast Cancer AJCC v8, Anatomic Stage IIB Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8, Anatomic Stage IIIB Breast Cancer AJCC v8, Anatomic Stage IIIC Breast Cancer AJCC v8, Lung Non-Small Cell Carcinoma, Prognostic Stage I Breast Cancer AJCC v8, Prognostic Stage IA Breast Cancer AJCC v8, Prognostic Stage IB Breast Cancer AJCC v8, Prognostic Stage II Breast Cancer AJCC v8, Prognostic Stage IIA Breast Cancer AJCC v8, Prognostic Stage IIB Breast Cancer AJCC v8, Prognostic Stage III Breast Cancer AJCC v8, Prognostic Stage IIIA Breast Cancer AJCC v8, Prognostic Stage IIIB Breast Cancer AJCC v8, Prognostic Stage IIIC Breast Cancer AJCC v8, Stage I Lung Cancer AJCC v8, Stage I Ovarian Cancer AJCC v8, Stage IA Ovarian Cancer AJCC v8, Stage IA1 Lung Cancer AJCC v8, Stage IA2 Lung Cancer AJCC v8, Stage IA3 Lung Cancer AJCC v8, Stage IB Lung Cancer AJCC v8, Stage IB Ovarian Cancer AJCC v8, Stage IC Ovarian Cancer AJCC v8, Stage II Lung Cancer AJCC v8, Stage II Ovarian Cancer AJCC v8, Stage IIA Lung Cancer AJCC v8, Stage IIA Ovarian Cancer AJCC v8, Stage IIB Lung Cancer AJCC v8, Stage IIB Ovarian Cancer AJCC v8, Stage III Lung Cancer AJCC v8, Stage III Ovarian Cancer AJCC v8, Stage IIIA Lung Cancer AJCC v8, Stage IIIA Ovarian Cancer AJCC v8, Stage IIIA1 Ovarian Cancer AJCC v8, Stage IIIA2 Ovarian Cancer AJCC v8, Stage IIIB Lung Cancer AJCC v8, Stage IIIB Ovarian Cancer AJCC v8, Stage IIIC Lung Cancer AJCC v8, Stage IIIC Ovarian Cancer AJCC v8
Interventions
Chemotherapy, Functional Assessment, Questionnaire Administration
Drug · Other
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older
Enrollment
1,336 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
166
States / cities
Antioch, California • Dublin, California • Fremont, California + 132 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 18, 2026, 1:08 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Connect Qualitative Interviews

NCT07444411
View directory record Official record
Conditions
Research Awareness, Qualitative Research
Interventions
Qualitative Interview, Qualitative Survey, Survey using a questionnaire.
Other
Lead sponsor
Baylor Research Institute
Other
Eligibility
30 Years to 70 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Oct 18, 2026, 1:08 AM EDT
Completed No phase listed Observational

ARI103094-Follow-Up Study for REDUCE Study Subjects

NCT00883909
View directory record Official record
Conditions
Neoplasms, Prostate
Interventions
dutasteride
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
50 Years and older · Male only
Enrollment
2,795 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
73
States / cities
Anchorage, Alaska • Phoenix, Arizona • Little Rock, Arkansas + 68 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Oct 18, 2026, 1:08 AM EDT