| Completed | Relative Bioavailability Study of CX2101A for the Treatment of COVID-19 NCT06864182 | Heronova Pharmaceuticals | Phase 1 |
| Terminated | International Sites: Novel Experimental COVID-19 Therapies Affecting Host Response NCT05593770 | NEAT ID Foundation | Phase 2 / Phase 3 |
| Withdrawn | Safety, Tolerability and Immunogenicity of INO-4800 for COVID19 in Healthy Volunteers NCT05430958 | Inovio Pharmaceuticals | Phase 1 |
| Unknown | Fourth Dose of mRNA COVID-19 Vaccine in Residents of LTCFs NCT04978038 | Mark Loeb | Phase 4 |
| Unknown | NA-831, Atazanavir and Dexamethasone Combination Therapy for the Treatment of COVID-19 Infection NCT04452565 | Biomed Industries, Inc. | Phase 2 / Phase 3 |
| Unknown | Clinical Assessment of Oral Lactoferrin as a Safe Antiviral and Immunoregulatory in Treating COVID-19 Disease NCT04412395 | National Research Centre, Egypt | Phase 2 |
| Completed | Efficacy of Oral Rinses for Inactivation of COVID-19 (MOR2) NCT05178173 | University of North Carolina, Chapel Hill | N/A |
| Unknown | Arformoterol/Budesonide for COVID-19 NCT05055414 | Korea United Pharm. Inc. | Phase 2 |
| Unknown | SPI-1005 Treatment in Moderate COVID-19 Patients NCT04484025 | Sound Pharmaceuticals, Incorporated | Phase 2 |
| Unknown | SPI-1005 Treatment in Severe COVID-19 Patients NCT04483973 | Sound Pharmaceuticals, Incorporated | Phase 2 |
| Terminated | Clinical Study of the Safety and Immunogenicity of a Recombinant Viral Vector AAV5 (Adeno-Associated Virus Typ NCT05037188 | Biocad | Phase 1 / Phase 2 |
| Completed | Novel Experimental COVID-19 Therapies Affecting Host Response NCT04924660 | Sean Collins | Phase 2 / Phase 3 |
| Completed | COVFIS-HOME: COVID-19 Pilot Study of Fisetin to Alleviate Dysfunction and Decrease Complications NCT04771611 | James L. Kirkland, MD, PhD | Phase 2 |
| Withdrawn | Effects of DPP4 Inhibition on COVID-19 NCT04341935 | University of Miami | Phase 4 |
| Completed | Effectiveness of Colchicine Among Patients With COVID-19 Infection NCT04867226 | Hawler Medical University | Phase 2 |
| Completed | Annexin A5 in Patients With Severe COVID-19 Disease NCT04748757 | London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's | Phase 2 |
| Terminated | Apple Respiratory Study NCT04912180 | Apple Inc. | — |
| Completed | Effect of Respiratory Exerciser on Pulmonary Functions of COVID-19 Patients NCT04826731 | Diskapi Yildirim Beyazit Education and Research Hospital | — |
| Completed | Infection Control for Severe Acute Respiratory Syndrome Coronavirus 2 NCT04665960 | NMC Specialty Hospital | — |
| Terminated | Antiviral Efficacy and Acceptability of Mouth Rinses for Inactivation of COVID-19 NCT04748783 | University of North Carolina, Chapel Hill | Phase 2 |
| Unknown | Evaluate the Impact, Safety, Tolerability and Immunogenicity of the Coronavac Vaccine in Kidney Transplant Rec NCT04801667 | Hospital do Rim e Hipertensão | Phase 4 |
| Completed | Comparison Between Prednisolone and Dexamethasone on Mortality in Patients on Oxygen Therapy, with CoViD-19 NCT04765371 | Hôpital NOVO | Phase 3 |
| Completed | Renal Involvement in Hospitalized Children With COVID-19 NCT04788394 | Hamad Medical Corporation | — |
| Unknown | Spironolactone and Dexamethasone in Patients Hospitalized With COVID-19 NCT04826822 | Chita State Regional Clinical Hospital Number 1 | Phase 3 |
| Completed | Covid-19, Hospitalized, PatIents, Nasafytol NCT04844658 | Tilman S.A. | N/A |
| Completed | Community Collaboration to Combat COVID-19 (C-FORWARD) NCT04673292 | Johns Hopkins University | N/A |
| Recruiting | Post COVID-19 Biorepository NCT04885504 | University of Kansas Medical Center | — |
| Terminated | Camostat With Bicalutamide for COVID-19 NCT04652765 | Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins | Phase 1 |
| Unknown | Evaluation of the Psychosocial Impact on Health Professionals Exposed During COVID 19 Coronavirus Pandemic NCT04752839 | Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau | — |
| Terminated | Steam Inhalations in COVID-19 Patients NCT04743349 | Meyer Children's Hospital IRCCS | N/A |
| Completed | Telerehabilitation Program in Persistent COVID-19 NCT04996212 | University of Valencia | N/A |
| Suspended | Fluvoxamine for Adults With Mild to Moderate COVID-19 NCT04711863 | Asan Medical Center | Phase 2 |
| Completed | Piclidenoson for Treatment of COVID-19 NCT04333472 | Can-Fite BioPharma | Phase 2 |
| Unknown | COvid iMaging With POSitron Emission Tomography NCT05009563 | Semmelweis University Heart and Vascular Center | N/A |
| Terminated | Mouth Rinses for Inactivation of COVID-19 NCT04584684 | University of North Carolina, Chapel Hill | Phase 2 |
| Completed | Index Individuals in SARS-CoV-2 Prevention Research Studies (COVID-19 Index Individuals Companion Study) NCT05074719 | University of Washington | — |
| Completed | Efficacy of Probiotics in the Treatment of Hospitalised Patients With Novel Coronavirus Infection NCT04854941 | I.M. Sechenov First Moscow State Medical University | N/A |
| Completed | Trial of Combination Therapy to Treat COVID-19 Infection NCT04482686 | ProgenaBiome | Phase 1 |
| Completed | Hospitalization or Outpatient ManagEment of Patients With SRAS-CoV-2 Infection - Revised HOME-CoV Score Study NCT04657471 | University Hospital, Angers | N/A |
| Terminated | Safety, Immunogenicity, and Efficacy of INO-4800 for COVID-19 in Adults at High Risk of SARS-CoV-2 Exposure NCT04642638 | Inovio Pharmaceuticals | Phase 2 / Phase 3 |
| Completed | COVID-19 Health Professional Impact Study NCT04527432 | The Royal Wolverhampton Hospitals NHS Trust | N/A |
| Unknown | Efficacy of Ivermectin in Outpatients With Non-severe COVID-19 NCT04834115 | Universidad Nacional de Asunción | Phase 3 |
| Unknown | Efficacy of Subcutaneous Ivermectin With or Without Zinc in COVID-19 Patients NCT04472585 | Sohaib Ashraf | Phase 1 / Phase 2 |
| Completed | MOIST Study: Multi-Organ Imaging With Serial Testing in COVID-19 Infected Patients NCT04525404 | University of Alberta | — |
| Completed | Clinical Characteristics of Critically Ill Patients With COVID-19 NCT04413435 | Nevsehir Public Hospital | — |
| Completed | Canakinumab in Patients With COVID-19 and Type 2 Diabetes NCT04510493 | University Hospital, Basel, Switzerland | Phase 3 |
| Unknown | The Study of "Gam-COVID-Vac" Vaccine Against COVID-19 With the Participation of Volunteers of 60 y.o and Older NCT04587219 | Gamaleya Research Institute of Epidemiology and Microbiology, Health Ministry of the Russian Federation | Phase 2 |
| Completed | SARS-CoV-2 (COVID-19) Immune Surveillance Among a Population Based Sample of Adults in Florida NCT04596579 | H. Lee Moffitt Cancer Center and Research Institute | — |
| Completed | COG-UK Project Hospital-Onset COVID-19 Infections Study NCT04405934 | University College, London | N/A |
| Terminated | NasoVAX in Patients With Early Coronavirus Infectious Disease 2019 (COVID-19) NCT04442230 | Altimmune, Inc. | Phase 2 |
| Terminated | Coronavirus Induced Acute Kidney Injury: Prevention Using Urine Alkalinization NCT04530448 | West Virginia University | Phase 4 |
| Unknown | P2Et Extract in the Symptomatic Treatment of Subjects With COVID-19 NCT04410510 | Hospital Universitario San Ignacio | Phase 2 / Phase 3 |
| Withdrawn | Role of Ibuprofen and Other Medicines on Severity of Coronavirus Disease 2019 NCT04383899 | University Hospital, Bordeaux | — |
| Completed | COVID-19-Related Health and Practices Among Dental Hygienists NCT04542915 | American Dental Association | — |
| Completed | Blood Biomarkers as Predictors of COVID-19 Disease Progression in Recently Infected Kidney Transplant Patients NCT04369456 | Centre Hospitalier Universitaire de Nice | N/A |
| Completed | Pilot Study of Ensifentrine or Placebo Delivered Via pMDI in Hospitalized Patients With COVID-19 NCT04527471 | Verona Pharma Inc | Phase 2 |
| Unknown | Prevention of COVID19 Infection in Nursing Homes by Chemoprophylaxis With Hydroxychloroquine (PREVICHARM) NCT04400019 | University of Malaga | Phase 2 / Phase 3 |
| Completed | Taste and Smell Impairment in Critically Ill COVID-19 Patients NCT04532632 | Pinar Ay Sayin | — |
| Terminated | Pilot Study of Single Dose Bevacizumab as Treatment for Acute Respiratory Distress Syndrome (ARDS) in COVID-19 NCT04954014 | Maimónides Biomedical Research Institute of Córdoba | Phase 2 |
| Suspended | Cytokine Adsorption in Patients With Severe COVID-19 Pneumonia Requiring Extracorporeal Membrane Oxygenation NCT04385771 | Dr. Alexander Supady | N/A |
| Completed | Randomized Phase IIA Clinical Trial to Evaluate the Efficacy of Ivermectin to Obtain Negative PCR Results in P NCT04635943 | Universidad Peruana Cayetano Heredia | Phase 2 |
| Completed | Epidemiological Study of the Covid-19 Presto Test - The "COVIDOR" Study NCT04387968 | Raphael Serreau | — |
| Completed | Vadadustat for the Prevention and Treatment of Acute Respiratory Distress Syndrome (ARDS) in Hospitalized Pati NCT04478071 | The University of Texas Health Science Center, Houston | Phase 2 |
| Unknown | Yoga Pranayama Adjuvant to Treat Burden COVID-19 NCT04413747 | Health Ricerca e Sviluppo S.R.L. | N/A |
| Completed | COHIVE: Coronavirus (COVID-19) Outcomes in HIV Evaluation in Resource Limited Settings NCT04371835 | Kirby Institute | — |
| Unknown | Characteristics in Post Covid-19 Patients NCT04514705 | Universidade Metodista de Piracicaba | N/A |
| Completed | Convalescent Plasma for Patients With COVID-19: A Randomized, Single Blinded, Parallel, Controlled Clinical St NCT04332835 | Universidad del Rosario | Phase 2 / Phase 3 |
| Completed | WGS Analysis of COVID-19 Positive Patients NCT04353401 | Vanda Pharmaceuticals | — |
| Completed | Important Data on COVID-19 Profile in Africa NCT04847817 | Centre de Recherche Médicale de Lambaréné | — |
| Completed | Sars-CoV-2/COVID-19 Ivermectin Navarra-ISGlobal Trial NCT04390022 | Clinica Universidad de Navarra, Universidad de Navarra | Phase 2 |
| Completed | Post-intensive Care Follow-up of Patients Hospitalized for an Acute Respiratory Distress Syndrome Caused by CO NCT04619368 | University Hospital, Toulouse | — |
| Completed | Nitric Oxide Therapy for COVID-19 Patients With Oxygen Requirement NCT04476992 | Tomsk National Research Medical Center of the Russian Academy of Sciences | Phase 1 / Phase 2 |
| Terminated | Early Treatment With Ivermectin and LosarTAN for Cancer Patients With COVID-19 Infection NCT04447235 | Instituto do Cancer do Estado de São Paulo | Phase 2 |
| Completed | Retrospective Case Series of COVID19+ Patients Undergoing Orthopedic Surgery NCT05881343 | Istituto Ortopedico Rizzoli | — |
| Terminated | STerOids in COVID-19 Study NCT04416399 | University of Oxford | Phase 2 |
| Completed | TranSfUsion of coNvalescent plAsma for the Early Treatment of pneuMonIa in COVID-19 Patients NCT04716556 | Istituto Superiore di Sanità | N/A |
| Completed | Comparison of Tocilizumab Plus Dexamethasone vs. Dexamethasone for Patients With Covid-19 NCT04476979 | Assistance Publique - Hôpitaux de Paris | Phase 2 |
| Completed | COVID-19 Seroprevalence Study in French Guiana NCT04490850 | Institut Pasteur | N/A |
| Completed | Quality of Life and Long-term Outcomes After Hospitalization for COVID-19 NCT04376658 | Hospital Moinhos de Vento | — |
| Completed | Safety, Tolerability and Immunogenicity of INO-4800 Followed by Electroporation in Healthy Volunteers for COVI NCT04447781 | International Vaccine Institute | Phase 1 / Phase 2 |
| Terminated | A Study to Assess Pulsed Inhaled Nitric Oxide vs Placebo in Subjects With Mild or Moderate COVID-19 NCT04421508 | Bellerophon Pulse Technologies | Phase 3 |
| Completed | COVID-19: Epidemiological Study of the Spread of SARS-CoV-2 in the Household of a Person Who Has Had a COVID-1 NCT04511949 | Centre de Recherches et d'Etude sur la Pathologie Tropicale et le Sida | N/A |
| Completed | Lung Ultrasound Changes in Covid 19 Patients Discharged From Hospital NCT05062603 | Chelsea and Westminster NHS Foundation Trust | — |
| Completed | A Pragmatic Randomized Controlled Trial of Therapeutic Anticoagulation Versus Standard Care as a Rapid Respons NCT04444700 | University of Sao Paulo General Hospital | Phase 3 |
| Completed | COVID-19 and Lactating Mothers NCT04558320 | University of Rochester | — |
| Unknown | Assessing the Impact of the COVID-19 Lockdown on Metabolic Control and Access to Health Care in Patients With NCT04485351 | Central Hospital, Nancy, France | — |
| Terminated | A Study to Compare the Efficacy and Safety of Different Doses of Ivermectin for COVID-19 NCT04431466 | Universidade Federal de Sao Carlos | Phase 2 |
| Unknown | Northeast COVID-19 and Pregnancy Study Group NCT04462367 | Instituto Materno Infantil Prof. Fernando Figueira | — |
| Withdrawn | A Study of Combination Therapies to Treat COVID-19 Infection NCT04459702 | ProgenaBiome | Phase 2 |
| Unknown | Hesperidin and Diosmin for Treatment of COVID-19 NCT04452799 | Tanta University | EARLY_Phase 1 |
| Completed | Monovalent Recombinant COVID19 Vaccine NCT04453852 | Vaxine Pty Ltd | Phase 1 |
| Completed | Epidemiological Study of Seroprevalence Against the SARS-CoV-2 Virus (COVID-19) NCT04448769 | Central Hospital, Nancy, France | N/A |
| Completed | A Study of Hydroxychloroquine, Vitamin C, Vitamin D, and Zinc for the Prevention of COVID-19 Infection NCT04335084 | ProgenaBiome | Phase 2 |
| Completed | Full Anticoagulation Versus Prophylaxis in COVID-19: COALIZAO ACTION Trial NCT04394377 | Brazilian Clinical Research Institute | Phase 4 |
| Completed | Efficacy of Intravenous Melatonin on Mortality in Adult Patients Admitted to the Intensive Care Unit With COVI NCT04568863 | Pharmamel S.L. | Phase 2 |
| Completed | Assessment of the Presence of the SARS-COV-2 Virus in the Peritoneum of COVID-19 Patients NCT04361396 | Hôpital NOVO | N/A |
| Unknown | Quality of Life and Patient-centered Outcomes After ICU Admission for COVID-19 NCT04416464 | Universidade do Porto | — |
| Completed | Observational Study in Diagnosed Patients COVID-19, Supported on an Outpatient Basis. (COVID-PSL) NCT04402905 | Centre de Recherches et d'Etude sur la Pathologie Tropicale et le Sida | — |
| Completed | Early Prone Position on Coronavirus Disease 2019 Pneumonia NCT04427969 | Sisli Hamidiye Etfal Training and Research Hospital | — |
| Terminated | Tannin Specific Natural Extract for COVID-19 Infection NCT04403646 | Hospital de Clinicas José de San Martín | N/A |
| Recruiting | Mesenchymal Stromal Cell Therapy for Severe Covid-19 Infection NCT04445454 | University of Liege | Phase 1 / Phase 2 |
| Unknown | The Assessment of the Prevalence, Clinical Course and Treatment of COVID-19 Complications NCT04453748 | Silesian Centre for Heart Diseases | — |
| Unknown | Change in the Ratio of Mean Platelet Volume (MPV) to Platellet(PLT) in Covid-19 Pneumonia Patients NCT04408378 | Gaziosmanpasa Research and Education Hospital | — |
| Unknown | Hydroxychloroquine and Lopinavir/ Ritonavir to Improve the Health of People With COVID-19: "The Hope Coalition NCT04403100 | Cardresearch | Phase 3 |
| Completed | COVID-19 Infection and Transmission in Exposed, Confined and Community-based Infants NCT04413968 | Assistance Publique - Hôpitaux de Paris | N/A |
| Completed | To Compare Videolaryngoscope Against Direct Laryngoscope for Intubation When Powered Air Purifying Respirator NCT04424953 | Singapore General Hospital | N/A |
| Completed | Renal Biomarkers in AKI and COVID-19 NCT04517630 | Instituto Nacional de Enfermedades Respiratorias | — |
| Unknown | Effects on the Qt Interval of COVID-19 Coronavirus Infection NCT04422535 | Matilde Zaballos | — |
| Completed | A Study of APL-9 in Adults With Mild to Moderate ARDS Due to COVID-19 NCT04402060 | Apellis Pharmaceuticals, Inc. | Phase 1 / Phase 2 |
| Completed | Rapid Development and Implementation of a Remote ECG-monitored Prospective Randomized Clinical Trial During a NCT04652648 | Bryn Mawr Hospital | Phase 4 |
| Completed | Cancer: Rapid Diagnostics and Immune Assessment for SARS-CoV-2 (COVID-19) NCT04427280 | Royal Marsden NHS Foundation Trust | — |
| Completed | PREPARE-IBD: Physician Responses to Disease Flares and Patient Adaptation in Relation to Events in Inflammator NCT04410484 | Hull University Teaching Hospitals NHS Trust | — |
| Completed | Prevention of Coronavirus Disease (COVID-19) Outbreaks With Nitazoxanide NCT04406246 | Materno-Perinatal Hospital of the State of Mexico | Phase 4 |
| Completed | GlitazOne Treatment for Coronavirus HypoxiA, a Safety and Tolerability Open Label With Matching Cohort Pilot S NCT04473274 | Samaritan Health Services | Phase 4 |
| Terminated | The COVID-19 ICU PRAYER Study NCT04361838 | Kansas City Heart Rhythm Institute | N/A |
| Completed | The Impact of COVID-19 Outbreak on Trans-population's Health in Italy NCT04448418 | Unita Complessa di Ostetricia e Ginecologia | — |
| Completed | Assessment of N-95 Facemask for Use in COVID-19 Pandemic in Case of Shortage of Personal Protective Equipment NCT04416919 | University of Oklahoma | N/A |
| Completed | Facilitating AcceLerated Clinical Validation Of Novel Diagnostics for COVID-19 (FALCON-C19) NCT04408170 | Manchester University NHS Foundation Trust | — |
| Completed | HFNC Treatment in COVID-19 Pneumonia NCT04424836 | Sisli Hamidiye Etfal Training and Research Hospital | — |
| Completed | COVid-19: Awake Proning and High-flow Nasal Cannula in respiratorY DistrEss NCT04395144 | Hôpital de Verdun | N/A |
| Completed | Microvascular Flow and Reactivity in Patients Presenting in the Acute Phase of COVID-19. NCT04406545 | National Institute of Cardiology, Laranjeiras, Brazil | — |
| Recruiting | Capturing MultiORgan Effects of COVID-19 NCT04510025 | University of Oxford | — |
| Unknown | Natural Killer Cell (CYNK-001) Infusions in Adults With COVID-19 NCT04365101 | Celularity Incorporated | Phase 1 / Phase 2 |
| Completed | Determinants of COVID-19 Pneumonia (MC-19) NCT04387799 | Catholic University of the Sacred Heart | — |
| Unknown | Describing Chinese Herbal Medicine Telehealth Care for Symptoms Related to Infectious Diseases Such as COVID-1 NCT04380870 | Center for Integrated Care | — |
| Completed | Antibody Seroprevalence and Rate of Asymptomatic Infections With SARS-CoV-2 in Austrian Hospital Personnel. NCT04354779 | AUVA | — |
| Completed | A Phase II, Controlled Clinical Study Designed to Evaluate the Effect of ArtemiC in Patients Diagnosed With CO NCT04382040 | MGC Pharmaceuticals d.o.o | Phase 2 |
| Unknown | Efficacy of Captopril in Covid-19 Patients With Severe Acute Respiratory Syndrome (SARS) CoV-2 Pneumonia (CAPT NCT04355429 | Assistance Publique - Hôpitaux de Paris | Phase 2 |
| Completed | Serologic Testing of Household Contacts of Confirmed Cases of COVID-19 NCT04393142 | Hospital Universitario Dr. Jose E. Gonzalez | — |
| Unknown | SINUS WASH Pilot Study in Adults Testing Positive for COVID-19 NCT04393792 | Hampshire Hospitals NHS Foundation Trust | Phase 1 |
| Completed | Study to Evaluate the Effect of a Probiotic in COVID-19 NCT04390477 | Bioithas SL | N/A |
| Completed | Sequencing and Tracking of Phylogeny in COVID-19 Study NCT04359849 | Portsmouth Hospitals NHS Trust | — |
| Completed | Convalescent Plasma for Patients With COVID-19 NCT04385199 | Henry Ford Health System | Phase 2 |
| Completed | Study of the Pathogenesis of Olfactory Disorders in COVID-19 NCT04366934 | Institut Pasteur | — |
| Completed | C-reactive Protein Levels Among Individuals With COVID-19 NCT04373798 | Henning Bliddal | — |
| Unknown | HUNgarian COronaVirus Disease-19 Epidemiological Research NCT04370067 | Semmelweis University Heart and Vascular Center | — |
| Completed | Convalescent Plasma for Patients With COVID-19: A Pilot Study NCT04332380 | Universidad del Rosario | Phase 2 |
| Completed | Early Intervention in COVID-19: Favipiravir Verses Standard Care NCT04373733 | Chelsea and Westminster NHS Foundation Trust | Phase 3 |
| Unknown | Inhaled Ibuprofen to Treat COVID-19 NCT04382768 | Química Luar SRL | N/A |
| Unknown | Gerontological Telemonitoring of Older Adults Living in Nursing Homes With COVID-19 Disease NCT04337788 | University Hospital, Limoges | N/A |
| Withdrawn | Evaluation of Activity and Safety of Two Regimens of Low Dose Oral Selinexor in Participants With Moderate or NCT04355676 | Karyopharm Therapeutics Inc | Phase 2 |
| Completed | Honey & Nigella Sativa Trial Against COVID-19 NCT04347382 | Sohaib Ashraf | Phase 3 |
| Completed | Convalescent Plasma Compared to the Best Available Therapy for the Treatment of SARS-CoV-2 Pneumonia NCT04358783 | Hospital Universitario Dr. Jose E. Gonzalez | Phase 2 |
| Terminated | COlchicine in Moderate-severe Hospitalized Patients Before ARDS to Treat COVID-19 NCT04363437 | Maimonides Medical Center | Phase 2 |
| Completed | LDCT in COVID-19 Pneumonia: a Prospective Moscow Study NCT04379531 | Research and Practical Clinical Center for Diagnostics and Telemedicine Technologies of the Moscow Health Care Department | N/A |
| Completed | An Observational Study to Assess the Protocol for the COVID-19 Treatment in Burkina Faso NCT04445441 | Centre Muraz | — |
| Completed | Clinical Evaluation of Cordio Application in Adult COVID-19 Virus Positive Patients NCT04325048 | Cordio Medical | — |
| Completed | St. Jude Tracking of Viral and Host Factors Associated With COVID-19 NCT04362995 | St. Jude Children's Research Hospital | — |
| Terminated | Saved From COVID-19 - Chloroquine (CQ) Prophylaxis for Health Care Workers at Risk for COVID NCT04349371 | Columbia University | Phase 2 |
| Completed | Inhaled Corticosteroid Treatment of COVID19 Patients With Pneumonia NCT04355637 | Sara Varea | Phase 4 |
| Completed | ACCESS A Master Digital Surveillance Protocol for COVID-19 NCT04363268 | Medable Inc. | — |
| Completed | BCG Vaccine for Health Care Workers as Defense Against COVID 19 NCT04348370 | Texas A&M University | Phase 4 |
| Completed | Efficacy of Melatonin in the Prophylaxis of Coronavirus Disease 2019 (COVID-19) Among Healthcare Workers. NCT04353128 | Instituto de Investigación Hospital Universitario La Paz | Phase 2 / Phase 3 |
| Recruiting | ARMOR Study: COVID-19 Seroprevalence Among Healthcare Workers NCT04367857 | Columbia University | — |
| Unknown | Pilot Study on Cytokine Filtration in COVID-19 ARDS NCT04361526 | Manuel Castellà | N/A |
| Completed | Evaluation of Activity and Safety of Oral Selinexor in Participants With Severe COVID-19 Infection NCT04349098 | Karyopharm Therapeutics Inc | Phase 2 |
| Completed | CONTAIN COVID-19: Convalescent Plasma to Limit COVID-19 Complications in Hospitalized Patients NCT04364737 | NYU Langone Health | Phase 2 |
| Recruiting | Convalescent Plasma Collection and Treatment in Pediatrics and Adults NCT04376034 | West Virginia University | Phase 3 |
| Completed | Awake Proning in COVID-19 Patients With Hypoxemic Respiratory Failure NCT04408222 | Columbia University | — |
| Terminated | Convalescent Antibodies Infusion in Critically Ill COVID 19 Patients NCT04346589 | A.O. Ospedale Papa Giovanni XXIII | N/A |
| Unknown | The McMaster Multi-Regional COVID-19 Hospital Case Registry NCT04508959 | McMaster University | — |
| Completed | Assessment of Exam Findings in Coronavirus Disease 2019 (COVID-19) With Point-of-Care Ultrasonography (POCUS) NCT04339998 | University of Minnesota | — |
| Completed | Randomized Clinical Trial for the Prevention of SARS-CoV-2 Infection (COVID-19) in Healthcare Personnel NCT04334928 | Plan Nacional sobre el Sida (PNS) | Phase 3 |
| Terminated | Observational Study of COVID-19 Treatment Efficacy NCT04369989 | OSF Healthcare System | — |
| Terminated | Post-Exposure Prophylaxis for Asymptomatic SARS-CoV-2 COVID-19 Patients With choloroquinE Compounds NCT04346667 | Government of Punjab, Specialized Healthcare and Medical Education Department | Phase 4 |
| Enrolling By Invitation | ODYSSEY: A Study to Investigate the Efficacy of Tradipitant in Treating Severe or Critical COVID-19 Infection NCT04326426 | Vanda Pharmaceuticals | Phase 3 |
| Terminated | COVID-19-associated ARDS Treated With Dexamethasone: Alliance Covid-19 Brasil III NCT04327401 | Hospital Sirio-Libanes | Phase 3 |
| Completed | Study of Ruxolitinib Plus Simvastatin in the Prevention and Treatment of Respiratory Failure of COVID-19. NCT04348695 | Fundación de investigación HM | Phase 2 |
| Completed | Physical Activity Level, Stress Level, Sleep Quality in Pregnant Women During Covid-19 Quarantine NCT04336787 | Istanbul Kültür University | — |
| Terminated | Hydroxychloroquine in Outpatient Adults With COVID-19 NCT04333654 | Sanofi | Phase 1 |
| Terminated | Hydroxychloroquine Plus Azithromycin Versus Hydroxychloroquine for COVID-19 Pneumonia (COVIDOC Trial) NCT04345861 | University Hospital, Montpellier | Phase 2 / Phase 3 |
| Completed | Beaumont Health Large-scale Automated Serologic Testing for COVID-19 NCT04349202 | Corewell Health East | — |
| Completed | HOME-CoV: Hospitalization or Outpatient ManagEment of Patients With a SARS-CoV-2 Infection NCT04338841 | University Hospital, Angers | N/A |
| Completed | Anxiety and Work Resilience Among Tertiary University Hospital Workers During the COVID-19 Outbreak: An Online NCT04358640 | Centre Hospitalier Universitaire de Nīmes | — |
| Completed | Point Of Care UltraSonography for Risk-stratification of COVID-19 Patients NCT04338100 | University Hospital, Angers | — |
| Terminated | Hydroxychloroquine vs Nitazoxanide in Patients With COVID-19 NCT04341493 | Hugo Mendieta Zeron | Phase 4 |
| Completed | University of Utah COVID-19 Hydrochloroquine Trial NCT04342169 | University of Utah | Phase 2 |
| Terminated | Hydroxychloroquine,Hydroxychloroquine,Azithromycin in the Treatment of SARS CoV-2 Infection NCT04341727 | Washington University School of Medicine | Phase 3 |
| Completed | Safety, Tolerability and Immunogenicity of INO-4800 for COVID-19 in Healthy Volunteers NCT04336410 | Inovio Pharmaceuticals | Phase 1 |
| Unknown | Prone Positioning in Spontaneously Breathing Nonintubated Covid-19 Patient: a Pilot Study NCT04344106 | ELHARRAR Xavier | N/A |
| Unknown | Prevalence and Incidence of COVID-19 Infection in Patients With Chronic Plaque Psoriasis on Immunosuppressant NCT04324866 | Universita di Verona | — |
| Completed | Study of the Treatment and Outcomes in Critically Ill Patients With COVID-19 NCT04343898 | Brigham and Women's Hospital | — |
| Completed | Efficacy and Tolerability of Hydroxychloroquine in Adult Patients With COVID-19 NCT04384380 | Taoyuan General Hospital | N/A |
| Withdrawn | Safety And Efficacy Of Hydroxychloroquine For At Risk Population (SHARP) Against COVID-19 NCT04342156 | Tan Tock Seng Hospital | Phase 3 |
| Completed | Treating COVID-19 With a Bidirectional Oxygenation Valve NCT04326452 | TMC HealthCare | N/A |
| Unknown | Oxygen-Ozone as Adjuvant Treatment in Early Control of COVID-19 Progression and Modulation of the Gut Microbia NCT04366089 | Roberto Poscia MD, PhD | Phase 2 |
| Completed | Acquiring Convalescent Specimens for COVID-19 Antibodies NCT04342195 | Columbia University | — |
| Unknown | Use of cSVF Via IV Deployment for Residual Lung Damage After Symptomatic COVID-19 Infection NCT04326036 | Black Tie Medical, Inc. | EARLY_Phase 1 |
| Completed | Efficacay of Chloroquine or Hydroxychloroquine in COVID-19 Treatment NCT04353336 | Tanta University | Phase 2 / Phase 3 |
| Unknown | Active Monitoring And Determinants of Incidence Infection of COVDI-19 NCT04326400 | Fundación Teófilo Hernando, Spain | — |
| Unknown | COVID-19 and Pregnancy Outcomes NCT04416373 | Universidade Nova de Lisboa | — |
| Unknown | Proflaxis Using Hydroxychloroquine Plus Vitamins-Zinc During COVID-19 Pandemia NCT04326725 | Istinye University | — |
| Unknown | Mechanisms for Covid-19 Disease Complications NCT04314232 | University Hospital, Akershus | — |
| Completed | Outcomes in Hospitalized Older Patients With COVID-19 NCT04385212 | University Hospital, Geneva | — |
| Withdrawn | Utility of Empiric Antibiotics for Non-intubated Novel Coronavirus Diseases 2019 Patients NCT04674410 | National Institutes of Health Clinical Center (CC) | — |
| Completed | Surfactant Protein Genetic Variants in COVID-19 Infection NCT04650191 | Milton S. Hershey Medical Center | — |
| Completed | Prediction Models for Diagnosis and Prognosis of Severe COVID-19 NCT04525287 | Second Affiliated Hospital, School of Medicine, Zhejiang University | — |
| No Longer Available | Pulsed Inhaled Nitric Oxide for the Treatment of Patients With Mild or Moderate COVID-19 NCT04358588 | Bellerophon | — |