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ClinicalTrials.gov public records Last synced Oct 25, 2026, 9:23 PM EDT

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Showing 1–24 of 60 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: HCQ Placebo Clear all
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 25, 2026, 9:23 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 25, 2026, 9:23 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 25, 2026, 9:23 PM EDT
Terminated Phase 2 Interventional Results available

A Study of Hydroxychloroquine vs Placebo to Prevent COVID-19 Infection in Patients Receiving Radiotherapy

NCT04381988
View directory record Official record
Conditions
COVID-19, Cancer
Interventions
Hydroxychloroquine, Placebo, Radiation therapy
Drug · Other · Radiation
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2021 · Synced Oct 25, 2026, 9:23 PM EDT
Completed Not applicable Interventional Results available

Rheumatoid Arthritis: Comparison of Active Therapies in Patients With Active Disease Despite Methotrexate Therapy

NCT00405275
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Etanercept, methotrexate, Sulfasalazine, Hydroxychloroquine, Placebo, triple, Placebo, etanercept
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
353 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
28
States / cities
Loma Linda, California • Long Beach, California • San Francisco, California + 23 more
Source: ClinicalTrials.gov public record
Updated Dec 3, 2013 · Synced Oct 25, 2026, 9:23 PM EDT
Completed Phase 2 Interventional Results available

Hydroxychloroquine and Metabolic Outcomes in Patients Undergoing TPAIT

NCT03283566
View directory record Official record
Conditions
Chronic Pancreatitis, Insulin Dependent Diabetes
Interventions
Hydroxychloroquine, Placebo
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 8, 2022 · Synced Oct 25, 2026, 9:23 PM EDT
Completed Phase 3 Interventional Results available

To Evaluate The Effect Of SAR153191 (REGN88) Added To Other RA Drugs In Patients With RA Who Are Not Responding To Or Intolerant Of Anti-TNF Therapy (SARIL-RA-TARGET)

NCT01709578
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Sarilumab, placebo, hydroxychloroquine, methotrexate, sulfasalazine, leflunomide
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
546 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
56
States / cities
Anniston, Alabama • Birmingham, Alabama • Phoenix, Arizona + 52 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2017 · Synced Oct 25, 2026, 9:23 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 25, 2026, 9:23 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Strategy to Prevent the Onset of Clinically-Apparent Rheumatoid Arthritis

NCT02603146
View directory record Official record
Conditions
Healthy Participants, Rheumatoid Arthritis (RA) Prevention
Interventions
Hydroxychloroquine, HCQ Placebo
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
14
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2025 · Synced Oct 25, 2026, 9:23 PM EDT
Completed Phase 3 Interventional Results available

Atherosclerosis Prevention in Pediatric Lupus Erythematosus (APPLE)

NCT00065806
View directory record Official record
Conditions
Lupus Erythematosus, Systemic
Interventions
Atorvastatin, Placebo atorvastatin
Drug
Lead sponsor
Laura Schanberg
Other
Eligibility
10 Years to 21 Years
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 15, 2013 · Synced Oct 25, 2026, 9:23 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 25, 2026, 9:23 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 25, 2026, 9:23 PM EDT
Completed Phase 3 Interventional Results available

A Study of Tocilizumab in Combination With DMARDs in Patients With Moderate to Severe Rheumatoid Arthritis

NCT00531817
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Tocilizumab, Placebo, Permitted DMARDs
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
619 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
156
States / cities
Birmingham, Alabama • Montgomery, Alabama • Lake Havasu City, Arizona + 135 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2012 · Synced Oct 25, 2026, 9:23 PM EDT
Terminated Phase 2 Interventional Results available

Hydroxychloroquine in Cardiovascular Disease in Patients With Chronic Kidney Disease: A Proof of Concept Study

NCT01537315
View directory record Official record
Conditions
Kidney Failure, Chronic, Cardiovascular Disease, Arteriosclerosis
Interventions
Hydroxychloroquine, Matching Placebo
Drug · Other
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
3
States / cities
Little Rock, Arkansas • Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 19, 2014 · Synced Oct 25, 2026, 9:23 PM EDT
Terminated Phase 1 Interventional

Hydroxychloroquine in Outpatient Adults With COVID-19

NCT04333654
View directory record Official record
Conditions
Coronavirus Infection
Interventions
Hydroxychloroquine SAR321068, Placebo
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Oct 25, 2026, 9:23 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 25, 2026, 9:23 PM EDT
Completed Phase 2 Interventional Results available

Study of Anti-Malarials in Incomplete Lupus Erythematosus

NCT03030118
View directory record Official record
Conditions
Systemic Lupus Erythematosus
Interventions
Hydroxychloroquine, Placebo Oral Capsule
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
15 Years to 49 Years
Enrollment
187 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
7
States / cities
Los Angeles, California • Aurora, Colorado • Great Neck, New York + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced Oct 25, 2026, 9:23 PM EDT
Completed Phase 3 Interventional Results available

Post-exposure Prophylaxis / Preemptive Therapy for SARS-Coronavirus-2

NCT04308668
View directory record Official record
Conditions
Corona Virus Infection, Acute Respiratory Distress Syndrome, SARS-CoV Infection, Coronavirus, Coronavirus Infections
Interventions
Hydroxychloroquine, Placebo
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
1,312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 13, 2021 · Synced Oct 25, 2026, 9:23 PM EDT
Completed Phase 2 Interventional Results available

Management of Cardiovascular Disease in Kidney Disease (MaCK) Study

NCT03636152
View directory record Official record
Conditions
Chronic Kidney Disease, Cardiovascular Disease, Inflammation, Atherosclerosis, Aortic Stiffness
Interventions
MRI carotid, APWV, Hydroxychloroquine, Matching Placebo
Procedure · Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 25, 2026, 9:23 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 25, 2026, 9:23 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 25, 2026, 9:23 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 25, 2026, 9:23 PM EDT
Completed Phase 2 Interventional

A Study of Quintuple Therapy to Treat COVID-19 Infection

NCT04334512
View directory record Official record
Conditions
COVID-19, Corona Virus Infection, Coronavirus-19, Sars-CoV2
Interventions
Hydroxychloroquine, Azithromycin, Vitamin C, Vitamin D, Zinc
Drug · Dietary Supplement
Lead sponsor
ProgenaBiome
Other
Eligibility
18 Years and older
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Feb 29, 2024 · Synced Oct 25, 2026, 9:23 PM EDT
Withdrawn Phase 3 Interventional

Azithromycin Plus Hydroxychloroquine for COVID-19 Infection

NCT05026801
View directory record Official record
Conditions
Respiratory Tract Infection Viral
Interventions
Azithromycin plus hydroxychloroquine
Drug
Lead sponsor
Iterum Therapeutics, International Limited
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Waterbury, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Oct 25, 2026, 9:23 PM EDT