Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 14, 2026, 4:49 AM EDT

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Showing 1–24 of 130 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Conditions
COVID-19 Infection
Interventions
Placebo Administration, Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1
Drug · Biological
Lead sponsor
GeoVax, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
3
States / cities
Claremont, California • Duarte, California • Thousand Oaks, California
Conditions
Coronavirus Disease 2019 (COVID-19)
Interventions
Garadacimab, Factor XIIa Antagonist Monoclonal Antibody, Placebo
Biological · Drug
Lead sponsor
CSL Behring
Industry
Eligibility
18 Years and older
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
14
States / cities
Bradenton, Florida • St. Petersburg, Florida • Mason City, Iowa + 11 more
Terminated Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Hydroxychloroquine Post Exposure Prophylaxis for Coronavirus Disease (COVID-19)

NCT04318444
Conditions
COVID-19, Corona Virus Infection
Interventions
Hydroxychloroquine, Placebo oral tablet
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
New York, New York
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of Ad26.COV2.S and Influenza Vaccines in Healthy Adults

NCT05091307
Conditions
COVID-19 Prevention
Interventions
Ad26.COV2.S, Placebo, Influenza Vaccine
Biological · Other
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years and older
Enrollment
861 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
17
States / cities
Tempe, Arizona • San Diego, California • Coral Gables, Florida + 12 more
Conditions
COVID-19 Prevention
Interventions
Q-Griffithsin 3.0, Q-Griffithsin 6.0
Drug
Lead sponsor
Kenneth Palmer
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Louisville, Kentucky
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of Ad26.COV2.S for the Prevention of SARS-CoV-2-Mediated COVID-19 in Adult Participants

NCT04505722
Conditions
Participants With or Without Stable Co-morbidities Associated With Progression to Severe COVID-19 at Different Stages of the Protocol
Interventions
Ad26.COV2.S, Placebo
Biological · Other
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years and older
Enrollment
44,325 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
117
States / cities
Birmingham, Alabama • Huntsville, Alabama • Glendale, Arizona + 77 more
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

GLS-1200 Topical Nasal Spray to Prevent SARS-CoV-2 Infection (COVID-19)

NCT04408183
Conditions
SARS-CoV 2, Infection
Interventions
GLS-1200, Placebo
Drug
Lead sponsor
GeneOne Life Science, Inc.
Industry
Eligibility
18 Years and older
Enrollment
184 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
3
States / cities
Baton Rouge, Louisiana • Philadelphia, Pennsylvania • Conroe, Texas
Conditions
Covid19 Pneumonia
Interventions
EC-18, Placebo
Drug
Lead sponsor
Enzychem Lifesciences Corporation
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
2
States / cities
The Bronx, New York • Warwick, Rhode Island
Conditions
Chronic Lymphocytic Leukemia, COVID-19 Infection
Interventions
Biospecimen Collection, mRNA COVID-19 Vaccine, Synthetic MVA-based SARS-CoV-2 Vaccine COH04S1
Procedure · Biological
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Duarte, California
Conditions
Immunocompromised
Interventions
casirivimab+imdevimab, Placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
12 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
66
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Long Beach, California + 48 more
Conditions
COVID-19 Prevention
Interventions
Ad26.COV2.S
Biological
Lead sponsor
Janssen Vaccines & Prevention B.V.
Industry
Eligibility
18 Years to 55 Years
Enrollment
1,609 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
18
States / cities
Little Rock, Arkansas • Anaheim, California • Long Beach, California + 15 more
Conditions
COVID-19, Corona Virus Infection, Wuhan Coronavirus, Prophylaxis, Healthcare Worker, Sars-CoV2, Hydroxychloroquine
Interventions
Hydroxychloroquine, Placebo
Drug
Lead sponsor
Louisiana State University Health Sciences Center in New Orleans
Other
Eligibility
18 Years and older
Enrollment
1,700 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Lafayette, Louisiana
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Hydroxychloroquine for COVID-19 Post-exposure Prophylaxis (PEP)

NCT04328961
Conditions
COVID-19, Corona Virus Infection, SARS (Severe Acute Respiratory Syndrome), SARS-CoV-2
Interventions
Hydroxychloroquine Sulfate, Ascorbic Acid
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 80 Years
Enrollment
943 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
8
States / cities
Los Angeles, California • New Orleans, Louisiana • Baltimore, Maryland + 4 more
Conditions
COVID 19
Interventions
MR or M-M-R II ® vaccine, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
3,411 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Conditions
COVID -19, COVID-19 (Prevention)
Interventions
MDX2301, Normal Saline
Biological
Lead sponsor
ModeX Therapeutics, An OPKO Health Company
Industry
Eligibility
18 Years to 64 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
2
States / cities
Las Vegas, Nevada • Austin, Texas
Conditions
COVID-19, Coronavirus Infection, Sars-CoV2, Corona Virus Infection, COVID, Coronavirus, Coronavirus-19, Coronavirus 19
Interventions
Hydroxychloroquine, Vitamin C, Vitamin D, Zinc
Drug · Dietary Supplement
Lead sponsor
ProgenaBiome
Other
Eligibility
18 Years and older
Enrollment
254 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Ventura, California
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Vitamin D Supplementation in the Prevention and Mitigation of COVID-19 Infection

NCT04482673
Conditions
COVID-19, Vitamin D Deficiency, Respiratory Viral Infection
Interventions
Daily Vitamin D3, Daily placebo, Bolus vitamin D3, Bolus placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
50 Years and older
Enrollment
95 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Charleston, South Carolina
Conditions
HIV-1-infection, Hypertension
Interventions
EXTRA-CVD Virtual Care
Other
Lead sponsor
Case Western Reserve University
Other
Eligibility
18 Years and older
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
3
States / cities
Durham, North Carolina • Cleveland, Ohio
Conditions
SARS-CoV Infection, COVID-19
Interventions
Mitoquinone/mitoquinol mesylate, Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Completed Phase 3 Interventional Accepts healthy volunteers

Vitamin D for COVID-19 Trial

NCT04536298
Conditions
COVID-19
Interventions
vitamin D, Placebo
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
2,024 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
COVID, Coronavirus Infection
Interventions
Chloroquine, Placebo oral tablet
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New York, New York
Conditions
COVID-19
Interventions
Nitric Oxide
Drug
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Boston, Massachusetts
Completed Not applicable Interventional Results available

SAFE Workplace Intervention for People With IDD

NCT06112249
Conditions
Communicable Diseases, Prevention, Workplace Intervention
Interventions
SAFE Employment Training
Behavioral
Lead sponsor
Temple University
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
2
States / cities
Collingswood, New Jersey • Philadelphia, Pennsylvania
Completed Phase 1 Interventional Accepts healthy volunteers

dMAbs for Prevention of COVID-19

NCT05293249
Conditions
Healthy Volunteers
Interventions
dMAb AZD5396, dMAb AZD8076, CELLECTRA™ 2000 with Side Port needle, OpBlock 0078 Electroporation device, Hylenex, CELLECTRA™ 2000 with Side Port needle, OpBlock 0070 Electroporation device
Combination Product · Drug
Lead sponsor
Pablo Tebas
Other
Eligibility
18 Years to 60 Years
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania