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ClinicalTrials.gov public records Last synced Oct 1, 2026, 1:21 PM EDT

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Showing 25–48 of 59 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo Hydroxychloroquine Clear all
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 1, 2026, 1:21 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 1, 2026, 1:21 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 1, 2026, 1:21 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 1, 2026, 1:21 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 1, 2026, 1:21 PM EDT
Not listed Phase 4 Interventional

Hydroxychloroquine Use in Hospitalized Patients With COVID-19: Impact on Progression to Severe or Critical Disease

NCT04429867
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine, Placebo
Drug
Lead sponsor
WellStar Health System
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Marietta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 16, 2020 · Synced Oct 1, 2026, 1:21 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 1, 2026, 1:21 PM EDT
Recruiting Phase 3 Interventional

Effects of Stopping Hydroxychloroquine in Elderly Lupus Disease

NCT05799378
View directory record Official record
Conditions
Systemic Lupus Erythematosus
Interventions
Hydroxychloroquine, Placebo
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
55 Years and older
Enrollment
330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
12
States / cities
Los Angeles, California • San Diego, California • Atlanta, Georgia + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 1, 2026, 1:21 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 1, 2026, 1:21 PM EDT
Recruiting Early Phase 1 Interventional

HCQ in Resectable Localized Prostate Cancer

NCT06408298
View directory record Official record
Conditions
Resectable Localized Prostate Cancer
Interventions
Hydroxychloroquine Sulfate 400Mg Tab, Placebo
Drug
Lead sponsor
Lionel.D.Lewis, MD
Other
Eligibility
18 Years and older · Male only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Oct 1, 2026, 1:21 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 1, 2026, 1:21 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 1, 2026, 1:21 PM EDT
Withdrawn Phase 2 Interventional

Hydroxychloroquine (HCQ) for Recurrent Pregnancy Loss

NCT02379650
View directory record Official record
Conditions
Recurrent Pregnancy Loss, Miscarriage
Interventions
Hydroxychloroquine (HCQ), Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
2
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 12, 2016 · Synced Oct 1, 2026, 1:21 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 1, 2026, 1:21 PM EDT
Recruiting Phase 1Phase 2 Interventional

Targeting Ischemia-Induced Autophagy Dependence in Hepatocellular Carcinoma

NCT05842174
View directory record Official record
Conditions
Hepatocellular Carcinoma
Interventions
Hydroxychloroquine, Lipiodol, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Oct 1, 2026, 1:21 PM EDT
Suspended Phase 3 Interventional

VA Remote and Equitable Access to COVID-19 Healthcare Delivery (VA-REACH TRIAL)

NCT04363203
View directory record Official record
Conditions
SARS-CoV-2, COVID-19
Interventions
Hydroxychloroquine, Azithromycin, Placebo oral tablet
Drug
Lead sponsor
Salomeh Keyhani MD
Federal
Eligibility
216 Months and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 22, 2020 · Synced Oct 1, 2026, 1:21 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 1, 2026, 1:21 PM EDT
Completed Phase 3 Interventional Results available

Filgotinib Versus Placebo in Adults With Active Rheumatoid Arthritis (RA) Who Have an Inadequate Response to Biologic Disease-modifying Anti-rheumatic Drug(s) (DMARDs) Treatment

NCT02873936
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Filgotinib, Placebo to match filgotinib, csDMARDs
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
449 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
55
States / cities
Huntsville, Alabama • Gilbert, Arizona • Covina, California + 52 more
Source: ClinicalTrials.gov public record
Updated May 13, 2021 · Synced Oct 1, 2026, 1:21 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 1, 2026, 1:21 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 1, 2026, 1:21 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study of Hydroxychloroquine, Vitamin C, Vitamin D, and Zinc for the Prevention of COVID-19 Infection

NCT04335084
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Oct 1, 2026, 1:21 PM EDT
Completed Phase 3 Interventional Results available

Triple III Comparison of Leflunomide Alone Versus Two DMARD Combinations in the Treatment of Rheumatoid Arthritis

NCT00579878
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
Leflunomide, Methotrexate-Sulfasalazine-Hydroxychloroquine, Leflunomide-Sulfasalazine-Hydroxychloroquine
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 80 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2010
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 2, 2023 · Synced Oct 1, 2026, 1:21 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 Aug 6, 2026 · Synced Oct 1, 2026, 1:21 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 1, 2026, 1:21 PM EDT