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ClinicalTrials.gov public records Last synced Oct 22, 2026, 3:44 PM EDT

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Showing 1–24 of 60 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo Hydroxychloroquine Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate the Safety, Tolerability and Pharmacokinetics of Orally Inhaled Aerosolized Hydroxychloroquine Sulfate in Healthy Adult Volunteers

NCT04461353
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome Coronavirus 2
Interventions
Aerolized Hydroxychloroquine Sulfate, Placebo
Drug · Other
Lead sponsor
Pulmoquine Therapeutics, Inc
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 8, 2020 · Synced Oct 22, 2026, 3:44 PM EDT
Withdrawn Phase 2 Interventional

A Study of Hydroxycholoroquine Compared to Placebo as Treatment for People With COVID-19

NCT04379492
View directory record Official record
Conditions
COVID-19, COVID19, Sars-CoV2, SARS-Cov-2
Interventions
Hydroxychloroquine, Placebo
Drug · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 16, 2025 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 2 Interventional Results available

A Triple Combination Antiviral Coronavirus Therapy (TriACT) for COVID-19

NCT04605588
View directory record Official record
Conditions
SARS-CoV Infection, Covid19
Interventions
Nitazoxanide, Placebo Nitazoxanide, Ribavirin, Placebo Ribavirin, Hydroxychloroquine, Placebo Hydroxychloroquine
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
21 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated May 5, 2022 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Treatment for COVID-19 in High-Risk Adult Outpatients

NCT04354428
View directory record Official record
Conditions
COVID-19, SARS-CoV-2
Interventions
Ascorbic Acid, Hydroxychloroquine Sulfate, Azithromycin, Folic Acid, Lopinavir 200 MG / Ritonavir 50 MG [Kaletra]
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 80 Years
Enrollment
289 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
6
States / cities
Chicago, Illinois • New Orleans, Louisiana • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2022 · Synced Oct 22, 2026, 3:44 PM EDT
Completed Phase 3 Interventional Results available

Pre-exposure Prophylaxis for SARS-Coronavirus-2

NCT04328467
View directory record Official record
Conditions
COVID-19, Corona Virus Infection, ARDS, Acute Respiratory Distress Syndrome
Interventions
Hydroxychloroquine, Placebo
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
1,483 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 2, 2021 · Synced Oct 22, 2026, 3:44 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Hydroxychloroquine as Prophylaxis for COVID-19 in Healthcare Workers (HCQPreP)

NCT04363450
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 1 Interventional Results available

Study of Edecesertib in Participants With Cutaneous Lupus Erythematosus (CLE)

NCT04809623
View directory record Official record
Conditions
Cutaneous Lupus Erythematosus
Interventions
Edecesertib, Placebo, Standard of Care
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 75 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
5
States / cities
Beverly Hills, California • Clearwater, Florida • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2024 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 2 Interventional Results available

Hydroxychloroquine in Individuals At-risk for Type 1 Diabetes Mellitus

NCT03428945
View directory record Official record
Conditions
Type1 Diabetes Mellitus
Interventions
Hydroxychloroquine, Placebo
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
3 Years and older
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
37
States / cities
Los Angeles, California • San Francisco, California • Stanford, California + 33 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2024 · Synced Oct 22, 2026, 3:44 PM EDT
Completed Phase 4 Interventional Results available

Reducing Risk of Type 2 Diabetes: Hydroxychloroquine Use in Pre-Diabetes

NCT01326533
View directory record Official record
Conditions
Pre-diabetes
Interventions
hydroxychloroquine, Placebo
Drug · Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 85 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 26, 2016 · Synced Oct 22, 2026, 3:44 PM EDT
Completed Phase 3 Interventional Results available

To Evaluate The Safety of SAR153191 (REGN88) and Tocilizumab Added to Other RA Drugs in Patients With RA Who Are Not Responding to or Intolerant of Anti-TNF Therapy (SARIL-RA-ASCERTAIN)

NCT01768572
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
sarilumab SAR153191 (REGN88), tocilizumab, hydroxychloroquine, methotrexate, sulfasalazine, leflunomide, subcutaneous placebo, intravenous placebo
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
14
States / cities
Huntsville, Alabama • Colorado Springs, Colorado • Aventura, Florida + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2017 · Synced Oct 22, 2026, 3:44 PM EDT
Completed Phase 2 Interventional Results available

A Phase 2a, Efficacy and Safety Study of Ustekinumab in Systemic Lupus Erythematosus

NCT02349061
View directory record Official record
Conditions
Lupus Erythematosus, Systemic
Interventions
Ustekinumab IV, Placebo Infusion, Placebo SC, Ustekinumab SC, Concomitant Medication
Drug · Other
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
12
States / cities
Huntsville, Alabama • Beverly Hills, California • Tampa, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 24, 2020 · Synced Oct 22, 2026, 3:44 PM EDT
Completed Phase 2 Interventional Results available

University of Utah COVID-19 Hydrochloroquine Trial

NCT04342169
View directory record Official record
Conditions
Coronavirus Infection, Coronavirus, Infectious Disease
Interventions
Hydroxychloroquine, Placebo oral tablet
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
368 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 15, 2023 · Synced Oct 22, 2026, 3:44 PM EDT
Completed Phase 4 Interventional Results available

Myositis Interstitial Lung Disease Nintedanib Trial

NCT05799755
View directory record Official record
Conditions
Myositis Associated Interstitial Lund Disease (MA-ILD)
Interventions
Nintedanib, Placebo, Standard of Care
Drug
Lead sponsor
Rohit Aggarwal, MD
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
10
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Denver, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 22, 2026, 3:44 PM EDT
Completed Phase 3 Interventional Results available

Outcomes Related to COVID-19 Treated With Hydroxychloroquine Among In-patients With Symptomatic Disease

NCT04332991
View directory record Official record
Conditions
Coronavirus, Acute Respiratory Infection, SARS-CoV Infection
Interventions
Hydroxychloroquine, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
479 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
40
States / cities
Tucson, Arizona • Fresno, California • Los Angeles, California + 31 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2021 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Trial of Hydroxychloroquine In Covid-19 Kinetics

NCT04353271
View directory record Official record
Conditions
Covid 19, Corona Virus Infection
Interventions
Hydroxychloroquine, Placebo
Drug · Other
Lead sponsor
University of South Alabama
Other
Eligibility
19 Years to 85 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Mobile, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 3, 2022 · Synced Oct 22, 2026, 3:44 PM EDT
Withdrawn Phase 2 Interventional

Assessing Hydroxychloroquine in Patients With SARS-CoV-2 (COVID-19)

NCT04363866
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Oct 29, 2020 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Not applicable Interventional Results available

Metabolic Effects of Hydroxychloroquine

NCT02026232
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
Hydroxychloroquine, Hydroxychloroquine Placebo
Drug · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 28, 2023 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 3 Interventional

Preemptive Therapy for SARS-Coronavirus-2 (COVID-19 PEP Canada)

NCT04421664
View directory record Official record
Conditions
Corona Virus Infection, SARS-CoV Infection, Coronavirus
Interventions
Hydroxychloroquine, Placebo oral tablet
Drug
Lead sponsor
McGill University Health Centre/Research Institute of the McGill University Health Centre
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 15, 2024 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Will Hydroxychloroquine Impede or Prevent COVID-19

NCT04341441
View directory record Official record
Conditions
COVID-19, Coronavirus, Coronavirus Infections, SARS-CoV 2
Interventions
Hydroxychloroquine - Daily Dosing, Hydroxychloroquine - Weekly Dosing, Placebo oral tablet, Monitoring Visit - Baseline, Monitoring Visit - Week 4, Monitoring Visit - Week 8, Weekly Assessment
Drug · Other · Diagnostic Test
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years to 75 Years
Enrollment
624 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 21, 2022 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 2 Interventional Results available

CD40L Antagonism in Rheumatoid Arthritis (RA)

NCT05306353
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Placebo for VIB4920, VIB4920 with TNFi, VIB4920 without TNFi
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
5
States / cities
San Francisco, California • Aurora, Colorado • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

PATCH 2&3:Prevention & Treatment of COVID-19 (Severe Acute Respiratory Syndrome Coronavirus 2) With Hydroxychloroquine

NCT04353037
View directory record Official record
Conditions
Coronavirus, Corona Virus Infection
Interventions
Group 1 HCQ, Group 2 Placebo
Drug
Lead sponsor
UnitedHealth Group
Industry
Eligibility
18 Years to 75 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 19, 2021 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Hydroxychloroquine as Post-Exposure Prophylaxis Against COVID-19 Infection

NCT04372017
View directory record Official record
Conditions
COVID-19, SARS-CoV 2
Interventions
Hydroxychloroquine, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Sanford Health
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Sioux Falls, South Dakota
Source: ClinicalTrials.gov public record
Updated Dec 10, 2021 · Synced Oct 22, 2026, 3:44 PM EDT
Terminated Phase 2 Interventional Results available

Testing Dabrafenib and Trametinib With or Without Hydroxychloroquine in Stage IIIC or IV BRAF V600E/K Melanoma

NCT04527549
View directory record Official record
Conditions
Clinical Stage IV Cutaneous Melanoma AJCC v8, Locally Advanced Melanoma, Pathologic Stage IIIC Cutaneous Melanoma AJCC v8, Pathologic Stage IV Cutaneous Melanoma AJCC v8, Unresectable Melanoma
Interventions
Dabrafenib mesylate, Hydroxychloroquine, Placebo Administration, Trametinib dimethyl sulfoxide
Drug
Lead sponsor
ECOG-ACRIN Cancer Research Group
Network
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
199
States / cities
Anchorage, Alaska • Phoenix, Arizona • Scottsdale, Arizona + 139 more
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 22, 2026, 3:44 PM EDT
Completed Phase 3 Interventional Results available

Hydroxychloroquine Monotherapy and in Combination With Azithromycin in Patients With Moderate and Severe COVID-19 Disease

NCT04358081
View directory record Official record
Conditions
Covid-19
Interventions
HCQ, HCQ+AZT, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
7
States / cities
Fullerton, California • Los Angeles, California • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 11, 2021 · Synced Oct 22, 2026, 3:44 PM EDT