Study to Evaluate the Effects of RO7496998 (AT-527) in Non-Hospitalized Adult and Adolescent Participants With Mild or Moderate COVID-19

NCT ID: NCT04889040

Last Updated: 2024-01-05

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE3

Total Enrollment

216 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-04-28

Study Completion Date

2021-12-02

Brief Summary

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This study will evaluate the efficacy, safety, antiviral activity, and pharmacokinetics of study drug RO7496998 (AT-527) compared to placebo in non-hospitalized adult and adolescent participants with mild to moderate coronavirus disease 2019 (COVID-19) in the outpatient setting.

Detailed Description

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Conditions

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COVID-19

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Placebo

The dose and regimen of the placebo will match that of AT-527.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Matching tablets

RO7496998 (AT-527)

Orally administered, 550 mg twice daily (BID) for 5 days

Group Type EXPERIMENTAL

RO7496998

Intervention Type DRUG

275 mg tablets

Interventions

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RO7496998

275 mg tablets

Intervention Type DRUG

Placebo

Matching tablets

Intervention Type DRUG

Other Intervention Names

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AT-527

Eligibility Criteria

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Inclusion Criteria

* Positive SARS-CoV-2 diagnostic test (RT-PCR or validated rapid antigen test) ≤72 hours prior to randomization
* At least three of the following symptoms of at least moderate (score ≥2 as per COVID-19 Symptom Diary) intensity: nasal congestion or runny nose, sore throat, cough, shortness of breath, muscle or body aches, fatigue, headache, chills or sweats, feeling hot or feverish, nausea, vomiting, or diarrhea.
* Has symptoms consistent with mild or moderate COVID-19, as determined by the investigator, with onset ≤5 days before dosing on Day 1

Exclusion Criteria

* Clinical signs indicative of COVID-19 illness requiring hospitalization
* Admitted to a hospital prior to randomization or is hospitalized (inpatient) at randomization due to COVID-19
* In the opinion of the investigator, is likely to experience imminent deterioration and require hospitalization
* Treatment with an investigational drug within 5 half-lives or 3 months (whichever is longer) of randomization
* Treatment with a COVID-19 therapeutic agent including, but not limited to, other direct or indirect acting antivirals against SARS-CoV-2 (such as remdesivir or favipiravir), systemic or inhaled steroids (such as dexamethasone or inhaled budesonide), colchicine, ivermectin, interferons, convalescent plasma, monoclonal antibodies against SARS CoV-2 or interleukin 6 (IL-6), intravenous immunoglobulin or other EUA-approved treatments within 3 months or less than 5 drug elimination half-lives (whichever is longer) prior to the screening visit
* Concomitant use of P-glycoprotein inhibitors or inducers listed as prohibited therapy in the protocol
* Known allergy or hypersensitivity to components of study drug
* Abnormal laboratory test results at screening
* Requirement of any prohibited medications during the study
* Other known active viral or bacterial infection at the time of screening, such as influenza
* Any clinically significant medical condition or laboratory abnormality that, in the opinion of the investigator, could jeopardize the safety of the patient or affect patient compliance or safety/efficacy observations during the study
* COVID-19 vaccination within ≤ 40-days prior to enrollment (second dose if applicable)
Minimum Eligible Age

12 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Atea Pharmaceuticals, Inc.

INDUSTRY

Sponsor Role collaborator

Hoffmann-La Roche

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Clinical Trials

Role: STUDY_DIRECTOR

Hoffmann-La Roche

Locations

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Instituto Ave Pulmo

Mar del Plata, , Argentina

Site Status

Maison Médicale La Brèche

Châtelineau, , Belgium

Site Status

Private Practice Dr Jean Benoit Martinot

Erpent, , Belgium

Site Status

Medif

Gozée, , Belgium

Site Status

L2 Ip Instituto de Pesquisas Clinicas Ltda ME; Centro Medico Hospitalar

Brasília, Federal District, Brazil

Site Status

Chronos Pesquisa Clinica

Taguatinga, Federal District, Brazil

Site Status

Hospital Nossa Senhora das Graças

Curitiba, Paraná, Brazil

Site Status

Hospital Agamenon Magalhães

Recife, Pernambuco, Brazil

Site Status

Conjunto Hospitalar do Mandaqui

São Paulo, São Paulo, Brazil

Site Status

Aalborg Universitetshospital

Aalborg, , Denmark

Site Status

Rigshospitalet Copenhagen University Hospital

Copenhagen, , Denmark

Site Status

Praxis am Ebertplatz

Cologne, , Germany

Site Status

Higashiosaka city Medical Center

Higashiosaka-Shi, , Japan

Site Status

Rinku General Medical Center

Izumisano, , Japan

Site Status

Sagamihara Kyodo Hospital

Kanagawa, , Japan

Site Status

Misyuku hospital

Meguro-Ku, , Japan

Site Status

IUHW Narita Hospital

Narita, , Japan

Site Status

Houjin Syadan Kouhoukai Takagi Hospital

Okawa-Shi, , Japan

Site Status

Okayama City Hospital

Okayama, , Japan

Site Status

Ome Municipal General Hospital

Ome-Shi, , Japan

Site Status

National Hospital Organization Kinki-Chuo Chest Medical Center

Sakaishi, , Japan

Site Status

Tokyo Shinagawa Hospital Medical Corporation Association Tokyokyojuno-kai

Shinagawa City, , Japan

Site Status

Edogawa Medicare Hospital

Tokyo, , Japan

Site Status

Center Hospital of the National Center for Global Health and Medicine

Tokyo, , Japan

Site Status

Tokyo Medical University Hachioji Medical Center

Tokyo, , Japan

Site Status

CIMAB SA de CV

Torreón, Coahuila, Mexico

Site Status

Panamerican Clinical Research S.A de C.V.

Guadalajara, Jalisco, Mexico

Site Status

Clinstile S.A de C.V.

Mexico City, Mexico CITY (federal District), Mexico

Site Status

PanAmerican Clinical Research, Querétaro

Queréaro, Querétaro, Mexico

Site Status

Instituto Jalisciense de Investigacion Clinica S.A. de C.V.

Guadalajara, , Mexico

Site Status

Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran

México, , Mexico

Site Status

Unidade Local de Saude de Matosinhos SA

Matosinhos Municipality, , Portugal

Site Status

Prof. Dr. Matei Bals Institute of Infectious Diseases

Bucharest, , Romania

Site Status

County Hospital Caracal

Caracal, , Romania

Site Status

Sibiu Emergency Clinical County Hospital

Sibiu, , Romania

Site Status

Hôpital Universitaire de Genève (HUG)

Geneva, , Switzerland

Site Status

Universitätsspital Zürich

Zurich, , Switzerland

Site Status

Gazi Universitesi Tip Fakultesi

Ankara, , Turkey (Türkiye)

Site Status

Ankara University Medical Faculty - PPDS

Çankaya, , Turkey (Türkiye)

Site Status

Ege University Medical Faculty

Izmir, , Turkey (Türkiye)

Site Status

Karadeniz Technical University Faculty of Medicine

Trabzon, , Turkey (Türkiye)

Site Status

Municipal Non-profit Enterprise ?City Clinical Hospital #13? of Kharkiv City Council

Kharkiv, Kharkiv Governorate, Ukraine

Site Status

Public Non-Profit Enterprise ?City Outpatient Clinic #9? of Kharkiv City Council

Kharkiv, Kharkiv Governorate, Ukraine

Site Status

CNPE City Clinical Hospital #6 of DCC

Dnipro, Kholm Governorate, Ukraine

Site Status

Medical Center LLC "Harmony of Beauty"

Kyiv, KIEV Governorate, Ukraine

Site Status

CNE Kyiv City Clinical Hospital#1 of Exec. Body

Kyiv, KIEV Governorate, Ukraine

Site Status

Kyiv Railway Clinical Hospital No2 of Branch Health Center of the JSC Ukrainian Rail

Kyiv, KIEV Governorate, Ukraine

Site Status

Polyclinic of Center of Medical Service and Rehabilitation of State JSHC Artem

Kyiv, KIEV Governorate, Ukraine

Site Status

Communal Non-Commercial Enterprise Vinnytsia City Clinical Hospital 1

Vinnytsia, Podolia Governorate, Ukraine

Site Status

Communal Non-Profit Enterprise City Hospital #7 of Zaporizhzhia City Council

Zaporizhzhia, Tavria Okruha, Ukraine

Site Status

Countries

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Argentina Belgium Brazil Denmark Germany Japan Mexico Portugal Romania Switzerland Turkey (Türkiye) Ukraine

References

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Horga A, Saenz R, Yilmaz G, Simon-Campos A, Pietropaolo K, Stubbings WJ, Collinson N, Ishak L, Zrinscak B, Belanger B, Granier C, Lin K, C Hurt A, Zhou XJ, Wildum S, Hammond J. Oral bemnifosbuvir (AT-527) vs placebo in patients with mild-to-moderate COVID-19 in an outpatient setting (MORNINGSKY). Future Virol. 2023 Oct:10.2217/fvl-2023-0115. doi: 10.2217/fvl-2023-0115. Epub 2023 Nov 1.

Reference Type DERIVED
PMID: 37928891 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Other Identifiers

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2020-005759-18

Identifier Type: EUDRACT_NUMBER

Identifier Source: secondary_id

CV43043

Identifier Type: -

Identifier Source: org_study_id

NCT05126576

Identifier Type: -

Identifier Source: nct_alias

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