| Recruiting | A Study to Learn About the Study Medicine Ibuzatrelvir in Adults With COVID-19 Who Are Severely Immunocompromi NCT07013474 | Pfizer | Phase 3 |
| Active Not Recruiting | A Study on the Effects in Healthy People of a New Drug Called PDI204 for Treating COVID-19 NCT06965751 | University of Melbourne | Phase 1 |
| Active Not Recruiting | A Study to Learn About How Well Yearly Updates to the COVID-19 Vaccine Work to Protect People From COVID-19 an NCT06923137 | Pfizer | — |
| Recruiting | A Trial of a Next Generation COVID-19 Vaccine Delivered by Inhaled Aerosol NCT06381739 | McMaster University | Phase 2 |
| Completed | Evaluation of Safety and Immunogenicity of a SARS-CoV-2(Severe Acute Respiratory Syndrome Coronavirus 2) Boost NCT06032000 | Lemonex | Phase 1 |
| Recruiting | A Vaccine Booster (GEO-CM04S1) for the Prevention of COVID-19 in Patients With Chronic Lymphocytic Leukemia NCT05672355 | City of Hope Medical Center | Phase 2 |
| Completed | Emotional Changes Between Emergency and Intensive Care Unit and On-site Counter Staffs After COVID-19 Infectio NCT05908058 | St. Martin De Porress Hospital | — |
| Completed | Study of WPV01 Compared With Placebo in Patients With Mild/Moderate COVID-19 Infection NCT05752175 | Westlake Pharmaceuticals (Hangzhou) Co., Ltd. | Phase 2 |
| Recruiting | Evaluation of COVID-19 Immune Barrier and Reinfection Risk NCT05774093 | Sun Yat-sen University | — |
| Recruiting | Integrated Mindfulness-based Health Qigong Intervention for COVID-19 Survivors and Caregivers NCT06194357 | The Hong Kong Polytechnic University | N/A |
| Unknown | UDCA in the Treatment of COVID-19 Infection and Its Clinical Prognosis in Patients With Autoimmune Liver Disea NCT05812612 | Beijing Ditan Hospital | — |
| Unknown | Novel Coronavirus Infection and Reproductive Function NCT05685992 | Jinling Hospital, China | — |
| Completed | A Controlled Study on Regulation of Systemic Inflammation by Fecal Bacteria Transplantation in Patients With C NCT05873348 | Shanghai 10th People's Hospital | N/A |
| Unknown | To Explore the Protective Effect of SARS-CoV-2 Vaccination on Cancer Patients Infected With SARS-CoV-2 NCT05774171 | Cancer Institute and Hospital, Chinese Academy of Medical Sciences | — |
| Unknown | Study of COVID-19 Infection and Its Clinical Prognosis in Chronic Hepatitis B Patients With Antiviral Therapy NCT05792878 | Beijing Ditan Hospital | — |
| Completed | Observational National Vaccine Study NCT05863429 | Health Institutes of Turkey | — |
| Completed | Association Between Prolactin Levels in Pregnant Women in COVID-19. Gether With Rates of Breastfeeding and the NCT05506280 | Universidad Católica de Ávila | — |
| Active Not Recruiting | Evaluation of Immunologic Response Following COVID-19 Vaccination in Children, Adolescents, and Young Adults W NCT05228275 | Children's Oncology Group | — |
| Completed | Prospective Observational Study to Evaluate a Possible Change in APS Antibody Profiles After COVID-19 Infectio NCT05313048 | Cardioangiologisches Centrum Bethanien | — |
| Completed | COVID-19 Among Children With Chronic Renal Diseases in Qatar NCT05275595 | Hamad Medical Corporation | — |
| Unknown | Evaluation of an Interactive Risk Information Tool to Increase COVID-19 Vaccination Incidence in Vaccine-hesit NCT05193903 | Charite University, Berlin, Germany | N/A |
| Completed | Extension Study in a Cohort of Adult Patients With COVID-19 Infection NCT05121740 | PharmaMar | Phase 1 / Phase 2 |
| Terminated | Pharmacokinetics of Sotrovimab as Pre-exposure Prophylaxis for COVID-19 in Hematopoietic Stem Cell Transplant NCT05135650 | Fred Hutchinson Cancer Center | Phase 1 |
| Terminated | An Open-Label Study of Apabetalone in Covid Infection NCT04894266 | Resverlogix Corp | Phase 2 / Phase 3 |
| Terminated | Study to Evaluate the Effect of Nicotinamide Mononucleotide (NMN) As an Adjuvant to Standard of Care (SOC) On NCT05175768 | Vedic Lifesciences Pvt. Ltd. | N/A |
| Completed | PREDICT: A PBRN Feasibility Study on COVID-19 Screening in Dental Practice NCT05123742 | Rutgers, The State University of New Jersey | — |
| Terminated | "CHANGE COVID-19 Severity" NCT04941703 | Vanderbilt University Medical Center | Phase 1 / Phase 2 |
| Active Not Recruiting | SARS-CoV-2 Vaccine (GEO-CM04S1) Versus mRNA SARS-COV-2 Vaccine in Patients With Blood Cancer NCT04977024 | GeoVax, Inc. | Phase 2 |
| Completed | Long Covid (Individuals with Ongoing COVID-19 Symptoms) Ongoing Effects NCT06528145 | Ziya Yildiz | — |
| Completed | Third Dose Vaccination With AstraZeneca or Pfizer COVID-19 Vaccine Among Adults Received Sinovac COVID-19 Vacc NCT05049226 | Mahidol University | Phase 2 |
| Completed | Oxford/AstraZeneca COVID-19 Vaccine Effectiveness in England NCT05047822 | AstraZeneca | — |
| Unknown | A Randomized, Double Blind, Placebo-controlled Study to Evaluate the Efficacy of Lavandula Angustifolia Contai NCT04974190 | The Grasses of Eden Ltd | N/A |
| Completed | SaRS-Cov-2 Antibodies Following Exposure to Coronavirus Disease 2019 (COVID-19) and/or Vaccination in Nursing NCT04964024 | Central Hospital, Nancy, France | — |
| Terminated | Trial to Determine the Efficacy/Safety of Plitidepsin vs Control in Patients With Moderate COVID-19 Infection NCT04784559 | PharmaMar | Phase 3 |
| Active Not Recruiting | Patient Perceptions of the Relational Empathy of Healthcare Practitioners From the Department of Emergency Med NCT05102656 | M.D. Anderson Cancer Center | N/A |
| Completed | Distress Associated with Coronavirus Disease 2019 and Telehealth on Supportive Care Patients with Advanced Can NCT05058339 | M.D. Anderson Cancer Center | — |
| Completed | Efficacy and Safety of COVID-19 Vaccine in Cancer Patients NCT04865133 | Mayo Clinic | — |
| Active Not Recruiting | Impact of COVID-19 on GU Disease NCT04761107 | Icahn School of Medicine at Mount Sinai | — |
| Unknown | Blood Types in Children With COVID-19 NCT04682912 | Mersin Training and Research Hospital | — |
| Unknown | Awake Pronation for Covid-19 Treatment NCT04667286 | IRCCS Azienda Ospedaliero-Universitaria di Bologna | N/A |
| Completed | Physical Activity Program Implementation in Hospitalized Positive COVID-19 Older Adults NCT04647682 | University Hospital, Toulouse | — |
| Completed | DISmantling COvid iNduced Neutrophil ExtraCellular Traps (DISCONNECT-1) NCT04409925 | McGill University Health Centre/Research Institute of the McGill University Health Centre | Phase 1 |
| Completed | Neurological and Neuropsychological Sequelae of COVID-19 Infection NCT04745611 | Maastricht University | — |
| Completed | A Synthetic MVA-based SARS-CoV-2 Vaccine, GEO-CM04S1, for the Prevention of COVID-19 Infection NCT04639466 | GeoVax, Inc. | Phase 1 / Phase 2 |
| Completed | CRISIS2: A Phase 2 Study of the Safety and Antiviral Activity of Brequinar in Non-hospitalized Pts With COVID- NCT04575038 | Clear Creek Bio, Inc. | Phase 2 |
| Recruiting | The Impact of COVID-19 on Pulmonary Procedures NCT05022446 | M.D. Anderson Cancer Center | — |
| Completed | IMPACT: IMPact of Antimalarials on Covid-19 Infections in RAPPORT NCT04347798 | University of Alberta | — |
| Completed | The Factors That Affect the Infection of COVID-19 NCT04848610 | Istanbul University - Cerrahpasa | — |
| Recruiting | Send-In Sample Collection for Comprehensive Analyses of Innate and Adaptive Immune Responses During Acute COVI NCT04582903 | National Institute of Allergy and Infectious Diseases (NIAID) | — |
| Unknown | Evaluating Clinical Parameters of COVID-19 in Pregnancy NCT04470583 | Chelsea and Westminster NHS Foundation Trust | — |
| Withdrawn | Efficacy of Human Coronavirus-immune Convalescent Plasma for the Treatment of COVID-19 Disease in Hospitalized NCT04377568 | The Hospital for Sick Children | Phase 2 |
| Terminated | A Trial Looking at the Use of Camostat in People Who Have Tested Positive for Coronavirus (COVID-19) (SPIKE-1) NCT04455815 | Cancer Research UK | Phase 2 |
| Completed | SARS-CoV-2 Donor-Recipient Immunity Transfer NCT04666025 | City of Hope Medical Center | — |
| Completed | The Status of Parathyroid Hormone Secretion in Covid-19 Patients NCT04662437 | Bezmialem Vakif University | — |
| Unknown | Double Blind Randomized Clinical Trial of Use of Colchicine Added to Standard Treatment in Hospitalized With C NCT04997551 | Biogipuzkoa Health Research Institute | Phase 3 |
| Completed | Thyroid Function Tests and Status of Thyroid Autoantibodies in Covid-19 Patients NCT04659200 | Bezmialem Vakif University | — |
| Completed | Expanded Evaluation of the Survivorship Wellness Group Program in the Context of COVID-19 and Telehealth NCT04630015 | University of California, San Francisco | — |
| Terminated | Randomized Open Label Phase II Study to Evaluate the Efficacy of Enzalutamide in High Risk Male Outpatients Wi NCT04456049 | Ricardo Pereira Mestre | Phase 2 |
| Completed | COVID-19 Convalescent Plasma Therapy NCT04747158 | Universidad Nacional de Asunción | Phase 2 / Phase 3 |
| Unknown | Evaluate the Safety and Efficacy of Allogeneic Umbilical Cord Mesenchymal Stem Cells in Patients With COVID-19 NCT05501418 | Ever Supreme Bio Technology Co., Ltd. | Phase 1 / Phase 2 |
| Recruiting | Study of Cord Blood Derived Mesenchymal Stem Cells for Treatment of Moderate, Severe or Critical Pneumonia NCT04565665 | M.D. Anderson Cancer Center | Phase 1 / Phase 2 |
| Completed | Immunity Against SARS-CoV2 in Children and Their Parents / COVID-19 NCT04355533 | Assistance Publique - Hôpitaux de Paris | N/A |
| Completed | Efficacy of Intranasal Probiotic Treatment to Reduce Severity of Symptoms in COVID19 Infection NCT04458519 | Centre hospitalier de l'Université de Montréal (CHUM) | N/A |
| Unknown | Clazakizumab vs. Placebo - COVID-19 Infection NCT04494724 | The Methodist Hospital Research Institute | Phase 2 |
| Completed | Effect of the COVID-19 Public Health Crisis on the Mental Health and Physical Well-Being of Cancer Patients, t NCT04652505 | M.D. Anderson Cancer Center | — |
| Recruiting | The Effect of COVID-19 Pandemic on Adolescent and Young Adult Cancer Patients and Survivors NCT04551378 | M.D. Anderson Cancer Center | — |
| Completed | Effect of Respiratory Versus Aerobic Training on Respiratory and Immunity Efficiency in Recovered COVID- 19 Pa NCT04613050 | Cairo University | N/A |
| Completed | ESICM UNITE COVID-19 Project (UNITE-COVID) NCT04836065 | University Hospital, Ghent | — |
| Completed | Covid-19 Breath Test NCT04459962 | Ancon Technologies Ltd | N/A |
| Active Not Recruiting | Breathing Techniques and Meditation for Health Care Workers During COVID-19 Pandemic NCT04482647 | M.D. Anderson Cancer Center | N/A |
| Unknown | Cardiac and Thoracic Imaging in Pediatric Patients With Evidence of Systemic Inflammation COVID19 Linked NCT04455347 | Imagine Institute | — |
| Active Not Recruiting | Well-Being and Health-Related Quality of Life in Cancer Patients and Survivors During the COVID-19 Pandemic NCT04500600 | M.D. Anderson Cancer Center | — |
| Recruiting | Well-Being and Health-Related Quality of Life in Melanoma Patients During COVID-19 Pandemic NCT04474301 | M.D. Anderson Cancer Center | — |
| Unknown | Changes in Seroprevalence and Wellness Over Time in Healthcare Workers (CONSERVE-HCW) NCT04595175 | Brian Tiffany, MD | — |
| Active Not Recruiting | NCI COVID-19 in Cancer Patients, NCCAPS Study NCT04387656 | National Cancer Institute (NCI) | — |
| Active Not Recruiting | Registry of Management Strategies for Patients With COVID-19 in Healthcare Establishments NCT05069389 | Centre Hospitalier Emile Roux | — |
| Active Not Recruiting | Well-being in Cancer Patients With Neuropathy During COVID-19 Who Participated in Prior Clinical Trials NCT04650178 | M.D. Anderson Cancer Center | — |
| Terminated | Neurodegeneration Markers and Neurological Course in Severe Covid-19 Infection NCT04361344 | Centre Hospitalier de PAU | N/A |
| Recruiting | Assessment of the Psychosocial Impact of the COVID-19 Pandemic on the MD Anderson Cancer Center Workforce NCT04491292 | M.D. Anderson Cancer Center | — |
| Completed | COVID-19 Epidemic and Patients With Myeloproliferative Neoplasias NCT04416438 | French Innovative Leukemia Organisation | — |
| Active Not Recruiting | Impact of the COVID-19 Pandemic and HRQOL in Cancer Patients and Survivors NCT04447222 | M.D. Anderson Cancer Center | — |
| Completed | Clinical Trial to Evaluate the Efficacy and Safety of an Immunomodulatory Therapy for the Treatment of Patient NCT04374032 | Bosnalijek D.D | Phase 2 / Phase 3 |
| Unknown | Immunosupressive Treatment in COVID-19 Patients NCT04382781 | Spanish Network for Research in Infectious Diseases | — |
| Terminated | Anakinra for COVID-19 Respiratory Symptoms NCT04364009 | University Hospital, Tours | Phase 3 |
| Terminated | Efficacy of Hydroxychloroquine, Telmisartan and Azithromycin on the Survival of Hospitalized Elderly Patients NCT04359953 | University Hospital, Strasbourg, France | Phase 3 |
| Terminated | Safety and Efficacy Trial of Zavegepant* Intranasal for Hospitalized Patients With COVID-19 Requiring Suppleme NCT04346615 | Pfizer | Phase 2 / Phase 3 |
| Completed | Convalescent Plasma for the Treatment of Patients With Severe COVID-19 Infection NCT04408209 | National and Kapodistrian University of Athens | N/A |
| Withdrawn | Use of Dexmedetomidine in Light to Moderate Sedation in the Patient in the Palliative Situation of a Sars-cov- NCT04350086 | University Hospital, Limoges | Phase 4 |
| Completed | Testing for COVID-19 Infection in Asymptomatic Persons NCT04345510 | German Cancer Research Center | — |
| Unknown | Study of Hemostasis in Case of Severe COVID-19 NCT04359992 | University Hospital, Strasbourg, France | — |
| Terminated | Protective Role of Inhaled Steroids for Covid-19 Infection NCT04331054 | Assistance Publique - Hôpitaux de Paris | Phase 3 |
| Completed | COVID-19 in Baselland: Investigation and Validation of Serological Diagnostic Assays and Epidemiological Study NCT04483908 | University Hospital, Basel, Switzerland | — |
| Unknown | Novel Point-of-Care Diagnostic Test for SARS-CoV-2 (COVID-19) NCT04513990 | M.D. Anderson Cancer Center | N/A |
| Unknown | COVID19-Convalescent Plasma for Treating Patients With Active Symptomatic COVID 19 Infection (FALP-COVID) NCT04384588 | Fundacion Arturo Lopez Perez | Phase 2 / Phase 3 |
| Unknown | Clinical Characteristics and Prognostic Factors of Patients With COVID-19 (Coronavirus Disease 2019) NCT04569851 | Savana Research | — |
| Recruiting | Impact of COVID-19 Pandemic on Out-of-Pocket Costs, Lost Wages, and Unemployment in Patients With Breast Cance NCT04169542 | M.D. Anderson Cancer Center | — |
| Recruiting | Researchers At UC San Diego Are Learning About the Benefits of Human Milk and How It Influences Infant and Chi NCT05553743 | University of California, San Diego | — |