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Efficacy and Safety of Bemnifosbuvir in High-Risk Outpatients With COVID-19

A Phase 3 Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Efficacy and Safety of Bemnifosbuvir in High-Risk Outpatients With COVID-19

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2071240070
Enrollment
2510
Registered
2024-10-16
Start date
2022-11-25
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

SARS CoV 2 Infection/COVID-19

Interventions

- Drug: Bemnifosbuvir (BEM) - BEM tablets administered orally every 12 hours (twice a day) for a total of 5 days - Other Names: - AT-527 - Drug: Placebo - Placebo tablets administered

Sponsors

Hamada Ryusuke
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: - Positive SARS-CoV-2 test conducted =rs OR 2. Age >=55 years with one of the following: i) obesity (body mass index [BMI] >=30 kg/m2) ii) diabetes mellitus iii) cardiovascular disease or hypertension iv) chronic lung disease requiring routine therapy OR 3. Age 50 to 54 years with two of the following: i) obesity (BMI >=30 kg/m2) ii) diabetes mellitus iii) cardiovascular disease or hypertension iv) chronic lung disease requiring routine therapy OR 4. Age >=18 years with one of the following: i) Down syndrome, sickle cell disease, dementia, Parkinson's disease, or care home residents ii) One of the following immunocompromising conditions or immunosuppressive treatments: receiving chemotherapy for cancer, hematologic malignancy, being within 2 years of a hematopoietic stem cell transplant, receipt of a solid organ transplant and on immunosuppressive therapy, human immunodeficiency virus (HIV) infection untreated or with CD4+ T lymphocyte count <350 cells per cubic millimeter, moderate/severe primary immunodeficiency, taking immunosuppressive medications - Use of adequate contraception for females of childbearing potential

Exclusion criteria

Exclusion criteria: - Severe or critical COVID-19 illness - Admitted to a hospital within 90 days prior to randomization due to COVID-19 - Use of other investigational drugs within 30 days prior to planned dosing, or plans to enroll in another clinical trial of an investigational agent while participating in the present study - Initiation or planned initiation of remdesivir for treatment of the current SARS-CoV-2 infection - Requirement of prohibited medications, including hydroxychloroquine or amiodarone within 3 months prior to screening. Note: Subjects who had already initiated any COVID-19 drug with antiviral effects intended to treat symptomatic SARS-CoV-2 infection (>= 24 hours prior to randomization) will be excluded. During screening (or within 24 hours prior to or after randomization), locally available COVID-19 drugs with antiviral effects (including but not limited to nirmatrelvir/ritonavir, molnupiravir, favipiravir, monoclonal antibodies) will be permitted. - Other known active viral or bacterial infection at the time of screening, such as influenza and respiratory syncytial virus (RSV). Note: This exclusion does not apply to subjects with stable chronic viral infections, such as chronic hepatitis C virus (HCV) or HIV providing other eligibility criteria are met. - Receiving dialysis or have known severe renal impairment - History of severe hepatic impairment (Child-Pugh Class C) - Known allergy or hypersensitivity to components of study drug

Design outcomes

Primary

MeasureTime frame
Proportion of subjects hospitalized for any cause or died due to any cause [Time Frame: Day 1 through Day 29]

Secondary

MeasureTime frame
1. Proportion of subjects hospitalized due to COVID-19 or died due to any cause [Time Frame: Day 1 through Day 29] 2. Proportion of subjects who died due to any cause [Time Frame: Day 1 through Day 29; Day 1 through Day 60] 3. Proportion of subjects with COVID-19-related complications [Time Frame: Day 1 through Day 29] 4. Proportion of subjects with COVID-19-medically attended visits (hospitalization, emergency room (ER) visit, urgent care visit, physician's office visit, or telemedicine visit) or who died due to any cause [Time Frame: Day 1 through Day 29; Day 1 through Day 60] 5. Proportion of subjects with COVID-19 symptom relapse [Time Frame: Day 1 through Day 29] 6. Proportion of subjects with viral load rebound [Time Frame: Day 1 through Day 29]

Countries

Argentina, Brazil, Canada, Germany, India, Japan, Latvia, Mexico, Netherlands, Pakistan, Philippines, Romania, South Africa, Spain, Sweden, Tunisia, Turkey, United Kingdom, United States

Contacts

Public ContactReceipt Center jRCT Inquiry

IQVIA Services Japan G.K.

ryusuke.hamada@iqvia.com+81-3-6859-9500

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026