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Showing 1–24 of 198 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Chloroquine Phosphate Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Healthcare Worker Exposure Response and Outcomes of Hydroxychloroquine

NCT04334148
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine, Placebo oral tablet
Drug
Lead sponsor
Adrian Hernandez
Other
Eligibility
18 Years and older
Enrollment
1,360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
34
States / cities
Aurora, Colorado • Gainesville, Florida • Jacksonville, Florida + 27 more
Source: ClinicalTrials.gov public record
Updated Oct 11, 2021 · Synced Sep 2, 2026, 2:14 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Investigating the Anti-Human Immunodeficiency Virus (HIV) & Anti-inflammatory Effect of Chloroquine

NCT00308620
View directory record Official record
Conditions
HIV Infections
Interventions
chloroquine phosphate, Placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2020 · Synced Sep 2, 2026, 2:14 PM EDT
Terminated Phase 2 Interventional Results available

Pragmatic Factorial Trial of Hydroxychloroquine, Azithromycin, or Both for Treatment of Severe SARS-CoV-2 Infection

NCT04335552
View directory record Official record
Conditions
SARS-CoV-2
Interventions
Standard of care, Hydroxychloroquine, Azithromycin
Other · Drug
Lead sponsor
Duke University
Other
Eligibility
12 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
4
States / cities
Durham, North Carolina • Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated May 16, 2021 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Sanaria™ PfSPZ Challenge Vaccine

NCT01546389
View directory record Official record
Conditions
Malaria
Interventions
Sanaria™ PfSPZ Vaccine, Chloroquine
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 12, 2013 · Synced Sep 2, 2026, 2:14 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 26, 2021 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Early Phase 1 Interventional

Treatment of Muscle Cramps in Patients With Liver Cirrhosis

NCT01495403
View directory record Official record
Conditions
Liver Cirrhosis, Muscle Cramps
Interventions
Hydroxychloroquine
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 2, 2023 · Synced Sep 2, 2026, 2:14 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 16, 2021 · Synced Sep 2, 2026, 2:14 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 12, 2021 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Phase 4 Interventional Results available

Treatment of Early Aggressive Rheumatoid Arthritis (TEAR)

NCT00259610
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
methotrexate, sulfasalazine, hydroxychloroquine, etanercept
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
755 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 16, 2014 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Phase 1 Interventional

Hydroxychloroquine, Cyclophosphamide, Dexamethasone, and Sirolimus in Treating Patients With Relapsed or Refractory Multiple Myeloma

NCT01689987
View directory record Official record
Conditions
Recurrent Plasma Cell Myeloma, Refractory Plasma Cell Myeloma
Interventions
Cyclophosphamide, Dexamethasone, Hydroxychloroquine, Laboratory Biomarker Analysis, Pharmacological Study, Sirolimus
Drug · Other
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 6, 2017 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Phase 1 Interventional

Sirolimus or Vorinostat and Hydroxychloroquine in Advanced Cancer

NCT01266057
View directory record Official record
Conditions
Advanced Cancers
Interventions
Hydroxychloroquine, Sirolimus, Vorinostat
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
143 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 3, 2021 · Synced Sep 2, 2026, 2:14 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 15, 2025 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Chloroquine for Reducing Immune Activation in HIV- Infected Individuals

NCT00819390
View directory record Official record
Conditions
HIV Infections
Interventions
Chloroquine, Placebo
Drug
Lead sponsor
Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Network
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
15
States / cities
Birmingham, Alabama • San Diego, California • Aurora, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2014 · Synced Sep 2, 2026, 2:14 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 23, 2020 · Synced Sep 2, 2026, 2:14 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Ixabepilone and Hydroxychloroquine in Treating Patients With Metastatic Breast Cancer

NCT00765765
View directory record Official record
Conditions
Breast Cancer
Interventions
hydroxychloroquine, ixabepilone
Drug
Lead sponsor
University of Medicine and Dentistry of New Jersey
Other
Eligibility
18 Years to 120 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
2
States / cities
Hamilton, New Jersey • New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 8, 2023 · Synced Sep 2, 2026, 2:14 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 25, 2016 · Synced Sep 2, 2026, 2:14 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 28, 2020 · Synced Sep 2, 2026, 2:14 PM EDT
Active, not recruiting Early Phase 1 Interventional

PHL Treatment in Pancreatic Cancer

NCT05365893
View directory record Official record
Conditions
Pancreatic Ductal Adenocarcinoma
Interventions
Paricalcitol, Hydroxychloroquine, Losartan, Neoadjuvant therapy and surgery only (Control)
Combination Product · Other
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 21, 2026 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Phase 2 Interventional Results available

Chloroquine With Taxane Chemotherapy for Advanced or Metastatic Breast Cancer After Anthracycline Failure (CAT)

NCT01446016
View directory record Official record
Conditions
Breast Neoplasms, Breast Cancer
Interventions
Paclitaxel, Docetaxel, Abraxane, Ixabepilone
Drug
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
3
States / cities
Houston, Texas • Sugar Land, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2023 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Dose Escalation PfSPZ-CVac

NCT03083847
View directory record Official record
Conditions
Malaria
Interventions
Chloroquine Phosphate, Pyrimethamine, Sanaria PfSPZ Challenge
Drug · Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 50 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 31, 2021 · Synced Sep 2, 2026, 2:14 PM EDT
Terminated Phase 3 Interventional

Treatment in Patients With Suspected or Confirmed COVID-19 With Early Moderate or Severe Disease

NCT04344444
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine, Azithromycin
Drug
Lead sponsor
LCMC Health
Other
Eligibility
18 Years to 100 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Sep 2, 2026, 2:14 PM EDT
Completed Phase 1 Interventional

Exploratory Platform Trial to Evaluate Immunotherapy Combinations With Chemotherapy for the Treatment of Patients With Previously Untreated Metastatic Pancreatic Adenocarcinoma

NCT04787991
View directory record Official record
Conditions
Metastatic Pancreatic Adenocarcinoma
Interventions
Nivolumab (Cohort A), Ipilimumab (Cohort A, B and C), Hydroxychloroquine (HCQ) (Cohort B), Nab-paclitaxel (nP) (Cohort A, B and C), Gemcitabine (gem) (Cohort A, B and C), NG350A (Cohort C)
Drug
Lead sponsor
Cancer Insight, LLC
Industry
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
6
States / cities
Los Angeles, California • San Francisco, California • Stanford, California + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2025 · Synced Sep 2, 2026, 2:14 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 22, 2025 · Synced Sep 2, 2026, 2:14 PM EDT
Terminated Phase 3 Interventional Results available

Hydroxychloroquine,Hydroxychloroquine,Azithromycin in the Treatment of SARS CoV-2 Infection

NCT04341727
View directory record Official record
Conditions
Coronavirus Infection
Interventions
Hydroxychloroquine Sulfate, Azithromycin, Chloroquine Sulfate
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Sep 2, 2026, 2:14 PM EDT