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Showing 1–24 of 60 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Hydroxychloroquine 200 mg 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 7, 2022 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Rapid Development and Implementation of a Remote ECG-monitored Prospective Randomized Clinical Trial During a Pandemic: Hydroxychloroquine Prophylaxis in COVID-19 Household Contacts

NCT04652648
View directory record Official record
Conditions
Covid19, Hydroxychloroquine, Coronavirus Infection, Transmission, Prophylaxis
Interventions
Hydroxychloroquine
Drug
Lead sponsor
Bryn Mawr Hospital
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
3
States / cities
Bryn Mawr, Pennsylvania • Paoli, Pennsylvania • Wynnewood, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 2, 2020 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Hydroxychloroquine, Radiation, and Temozolomide Treating Patients With Newly Diagnosed Glioblastoma Multiforme

NCT00486603
View directory record Official record
Conditions
Brain and Central Nervous System Tumors
Interventions
hydroxychloroquine, temozolomide, pharmacological study, Radiation
Drug · Other · Radiation
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years to 120 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
9
States / cities
Birmingham, Alabama • Tampa, Florida • Atlanta, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2019 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 2Phase 3 Interventional

The Fleming [FMTVDM] Directed CoVid-19 Treatment Protocol

NCT04349410
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Nov 11, 2020 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 2 Interventional

A Study of ABC294640 Alone and in Combination With HCQ Sulfate in the Treatment of Advanced Cholangiocarcinoma

NCT03377179
View directory record Official record
Conditions
Cholangiocarcinoma, Cholangiocarcinoma Non-resectable, Cholangiocarcinoma, Perihilar, Cholangiocarcinoma, Extrahepatic, Cholangiocarcinoma, Intrahepatic
Interventions
ABC294640, Hydroxychloroquine Sulfate 200 MG
Drug
Lead sponsor
RedHill Biopharma Limited
Industry
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
5
States / cities
Phoenix, Arizona • Atlanta, Georgia • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2025 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 2 Interventional Results available

COVID-19 PrEP HCW HCQ Study

NCT04354870
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine (HCQ)
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 13, 2022 · Synced Sep 24, 2026, 2:38 AM EDT
Suspended Phase 4 Interventional

Hydroxychloroquine in Patients With Newly Diagnosed COVID-19 Compared to Standard of Care

NCT04334967
View directory record Official record
Conditions
COVID-19, Corona Virus Infection, SARS-CoV-2, 2019-nCoV, 2019 Novel Coronavirus
Interventions
Hydroxychloroquine, Vitamin C
Drug · Dietary Supplement
Lead sponsor
Providence Health & Services
Other
Eligibility
45 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 15, 2020 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Hydroxychloroquine in the Prevention of COVID-19 Infection in Healthcare Workers

NCT04333225
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine
Drug
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years to 75 Years
Enrollment
221 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 19, 2021 · Synced Sep 24, 2026, 2:38 AM 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 12, 2021 · Synced Sep 24, 2026, 2:38 AM 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 15, 2025 · Synced Sep 24, 2026, 2:38 AM EDT
Recruiting Phase 3 Interventional

Randomized, Embedded, Multifactorial Adaptive Platform Trial for Community- Acquired Pneumonia

NCT02735707
View directory record Official record
Conditions
Community-acquired Pneumonia, Influenza, COVID-19
Interventions
Ceftriaxone, Moxifloxacin or Levofloxacin, Piperacillin-tazobactam, Ceftaroline, Amoxicillin-clavulanate, Standard course macrolide, Extended course macrolide, No systemic corticosteroid, Fixed-duration Hydrocortisone, Shock-dependent hydrocortisone, Fixed-duration higher dose Hydrocortisone, No antiviral agent for influenza, Five-days oseltamivir, Ten-days oseltamivir, No antiviral agent for COVID-19, Lopinavir / Ritonavir, Hydroxychloroquine, Hydroxychloroquine + lopinavir/ritonavir, Ivermectin, No immune modulation for COVID-19, Interferon beta-1a, Anakinra, Tocilizumab, Sarilumab, Local standard venous thromboprophylaxis, Therapeutic dose anticoagulation, Conventional low dose thromboprophylaxis, Intermediate dose thromboprophylaxis, Continuation of therapeutic dose anticoagulation, No immunoglobulin, Convalescent plasma, Delayed administration of convalescent plasma, No vitamin C, Vitamin C, No antiplatelet, Aspirin, P2Y12 inhibitor, No simvastatin, Simvastatin, Eritoran, Apremilast, Clinician-preferred mechanical ventilation strategy, Protocolised mechanical ventilation strategy, No renin-angiotensin system inhibitor, Angiotensin converting enzyme inhibitor, Angiotensin Receptor Blockers, ARB + DMX-200, No cysteamine, Cysteamine, Fixed-duration dexamethasone, Baloxavir Marboxil, Five-days oseltamivir + baloxavir marboxil, Ten-days oseltamivir + baloxavir marboxil, No endothelial modulator, Imatinib, No Immune Modulator for Influenza, Baricitinib, Nirmatrelvir/ritonavir, Remdesivir, Nirmatrelvir/ritonavir + remdesivir
Drug · Other · Biological + 1 more
Lead sponsor
UMC Utrecht
Other
Eligibility
18 Years and older
Enrollment
20,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2028
U.S. locations
11
States / cities
Jacksonville, Florida • Augusta, Georgia • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Sep 24, 2026, 2:38 AM 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 4, 2022 · Synced Sep 24, 2026, 2:38 AM 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 25, 2017 · Synced Sep 24, 2026, 2:38 AM 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 2, 2022 · Synced Sep 24, 2026, 2:38 AM EDT
Withdrawn Phase 1 Interventional

Hydroxychloroquine, Abemaciclib and Endocrine Therapy in Hormone Receptor Positive (HR+)/Her 2 Negative Breast Cancer

NCT04316169
View directory record Official record
Conditions
Solid Tumor, Advanced Breast Cancer
Interventions
Abemaciclib, Hydroxychloroquine 200 mg, Faslodex, Anastrazole, Letrozole, Hydroxychloroquine 400 mg, Hydroxychloroquine 600 mg
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 22, 2022 · Synced Sep 24, 2026, 2:38 AM 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 28, 2020 · Synced Sep 24, 2026, 2:38 AM EDT
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Efficacy of Hydroxychloroquine Prophylaxis for Health Care Workers at High Risk for COVID-19

NCT04435808
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Feb 13, 2022 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 4 Interventional

Hydroxychloroquine and Zinc With Either Azithromycin or Doxycycline for Treatment of COVID-19 in Outpatient Setting

NCT04370782
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine, Azithromycin, Zinc Sulfate, Doxycycline
Drug
Lead sponsor
St. Francis Hospital, New York
Other
Eligibility
30 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Roslyn, New York
Source: ClinicalTrials.gov public record
Updated Dec 8, 2020 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Binimetinib and Hydroxychloroquine in Patients With Advanced KRAS Mutant Non-Small Cell Lung Cancer

NCT04735068
View directory record Official record
Conditions
Non-Small Cell Lung Cancer, KRAS Mutation-Related Tumors
Interventions
Binimetinib Pill, Hydroxychloroquine Pill
Drug
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 31, 2025 · Synced Sep 24, 2026, 2:38 AM 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 7, 2017 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 2 Interventional Results available

Hydroxychloroquine in Treating Patients With Rising PSA Levels After Local Therapy for Prostate Cancer

NCT00726596
View directory record Official record
Conditions
Prostate Cancer
Interventions
hydroxychloroquine
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older · Male only
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
5
States / cities
Hamilton, New Jersey • Morristown, New Jersey • New Brunswick, New Jersey + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 15, 2022 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Early Phase 1 Interventional

Hydroxychloroquine in Patients With Stage III or Stage IV Melanoma That Can Be Removed by Surgery

NCT00962845
View directory record Official record
Conditions
Melanoma (Skin)
Interventions
hydroxychloroquine
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 120 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 6, 2022 · Synced Sep 24, 2026, 2:38 AM EDT
Withdrawn Phase 1Phase 2 Interventional

Gedatolisib, Hydroxychloroquine or the Combination for Prevention of Recurrent Breast Cancer ("GLACIER")

NCT03400254
View directory record Official record
Conditions
Breast Cancer
Interventions
Hydroxychloroquine (HCQ), Gedatolisib
Drug
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 27, 2020 · Synced Sep 24, 2026, 2:38 AM EDT
Completed Phase 1 Interventional Results available

Safety Study of Sirolimus and Hydroxychloroquine in Women With Lymphangioleiomyomatosis

NCT01687179
View directory record Official record
Conditions
Lymphangioleiomyomatosis
Interventions
"Sirolimus" and "Hydroxychloroquine" 200 mg, "Sirolimus" and "Hydroxychloroquine" 400 mg
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 85 Years · Female only
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 10, 2018 · Synced Sep 24, 2026, 2:38 AM EDT