Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 23, 2026, 3:39 PM EDT

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Showing 577–600 of 1,235 matching trials from the live ClinicalTrials.gov search.
Conditions
Kidney Transplant Recipients, Liver Transplant Recipients
Interventions
Pfizer-BioNTech COVID-19 Vaccine 2023-2024, Moderna COVID-19 Vaccine 2023-2024, SOC IS Regimen, SOC IS Reduction
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
15
States / cities
San Diego, California • San Francisco, California • Atlanta, Georgia + 10 more
Completed Not applicable Interventional Accepts healthy volunteers Results available

Assessing Testing Strategies for Safe Return to K-12 Schools in an Underserved Population

NCT04875520
Conditions
Covid19
Interventions
Screening testing strategy, No screening testing strategy
Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
0 Years and older
Enrollment
1,390 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
5
States / cities
Hazelwood, Missouri • Jennings, Missouri • Saint Ann, Missouri + 2 more
Conditions
COVID-19, SARS-CoV-2
Interventions
Hydroxychloroquine, Placebo
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Portland, Oregon
Conditions
SARS-CoV2 Infection
Interventions
Not listed
Lead sponsor
MiCo BioMed Co., Ltd.
Industry
Eligibility
18 Years and older
Enrollment
218 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
5
States / cities
Starkville, Mississippi • Englewood Cliffs, New Jersey • Cincinnati, Ohio + 2 more
Completed Phase 3 Interventional Results available

Adaptive COVID-19 Treatment Trial (ACTT)

NCT04280705
Conditions
COVID-19
Interventions
Placebo, Remdesivir
Other · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
1,062 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
41
States / cities
Birmingham, Alabama • La Jolla, California • Los Angeles, California + 35 more
Recruiting No phase listed Observational Accepts healthy volunteers

Dysbiosis & Long COVID

NCT06825819
Conditions
COVID-19
Interventions
Subjects with and without Long COVID
Biological
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 80 Years
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Critically Illness, Sedation, Invasive Mechanical Ventilation, Acute Respiratory Distress Syndrome
Interventions
Intravenous sedation, Inhaled sedation
Drug
Lead sponsor
University Hospital, Clermont-Ferrand
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Covid-19, Deconditioning
Interventions
Biobehavioral Tele-rehabilitation Sessions
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
35 Years to 100 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Aurora, Colorado
Conditions
COVID-19
Interventions
nirmatrelvir, ritonavir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 50 Years · Female only
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
13
States / cities
Birmingham, Alabama • Cutler Bay, Florida • DeBary, Florida + 6 more
Conditions
COVID, Drug Effect, Drug Interaction, Risk Reduction
Interventions
Not listed
Lead sponsor
Tabula Rasa HealthCare
Industry
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Orlando, Florida
Conditions
Covid 19
Interventions
Targeted Wellness Formula C™ Sublingual Drops - 1200mg - 30 mL (Formula C)
Dietary Supplement
Lead sponsor
Endourage, LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Novato, California
Conditions
COVID-19
Interventions
ChAdV68-S, ChAdV68-S-TCE, SAM-LNP-S, SAM-LNP-S-TCE, Sodium Chloride, 0.9%
Biological · Other
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 99 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
4
States / cities
Decatur, Georgia • St Louis, Missouri • Houston, Texas + 1 more
Conditions
Covid19, Sequelae of; Infection, Cognitive Symptom
Interventions
Niagen
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Kidney Transplant Recipient
Interventions
Janssen Ad26.CoV2.S Vaccine, Reduction in Immunosuppression Medication, Maintenance in Immunosuppression Medication
Biological · Other
Lead sponsor
Mark Stegall
Other
Eligibility
18 Years and older
Enrollment
468 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
3
States / cities
Phoenix, Arizona • Jacksonville, Florida • Rochester, Minnesota
Conditions
Mood
Interventions
Botulinum Neurotoxin, Placebo
Drug
Lead sponsor
DeNova Research
Other
Eligibility
10 Years to 75 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Chicago, Illinois
Completed Phase 2 Interventional Results available

COVID-19 Protection After Transplant Pilot Study

NCT04969263
Conditions
Kidney Transplant Recipients
Interventions
BNT162b2 vaccine (Pfizer/BioNTech), mRNA-1273 vaccine (Moderna)
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Conditions
CoVid 19 Positive
Interventions
Hydroxychloroquine, Azithromycin, Hydroxychloroquine, Doxycycline, Hydroxychloroquine, Clindamycin, Hydroxychloroquine, Clindamycin, Primaquine - low dose., Hydroxychloroquine, Clindamycin, Primaquine - high dose., Remdesivir, Tocilizumab, Methylprednisolone, Interferon-Alpha2B, Losartan, Convalescent Serum
Drug
Lead sponsor
The Camelot Foundation
Other
Eligibility
Not listed
Enrollment
1,800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Los Angeles, California
Conditions
COVID-19
Interventions
Experimental: Primary Cohort, Placebo Comparator: Primary Cohort - Placebo
Drug · Other
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
280 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Vaccine Responses to SARS-CoV-2 and Other Emerging Infectious Diseases

NCT05078905
Conditions
COVID-19, Vaccination, Healthy Volunteer
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2050
U.S. locations
1
States / cities
Bethesda, Maryland
Conditions
COVID-19, Long COVID
Interventions
MouthLabTM
Device
Lead sponsor
Edith Nourse Rogers Memorial Veterans Hospital
Federal
Eligibility
18 Years and older
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Bedford, Massachusetts
Conditions
Severe Acute Respiratory Syndrome, COVID
Interventions
SARS-CoV-2 plasma
Drug
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Novi, Michigan • Southfield, Michigan • Warren, Michigan
Conditions
Covid 19
Interventions
Not listed
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Dallas, Texas
Conditions
Myocardial Injury, COVID-19, Vaccine Reaction
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Conditions
Long COVID
Interventions
Nirmatrelvir, Ritonavir, Placebo
Drug
Lead sponsor
Harlan M Krumholz
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
New Haven, Connecticut