CompletedPhase 2
A Phase 2, Safety and Efficacy of Bemnifosbuvir (BEM) and Ruzasvir (RZR) in Subjects With Chronic HCV
Key facts
- Who runs it
- Atea Pharmaceuticals, Inc.
- Where
- San Antonio, United StatesSee the siteAlso in 13 other countries, 49 sites
- Status
- Completed
- Phase
- Phase 2
- People taking part
- 275 people enrolled
- Started
- 30 May 2023
- Ended
- 28 Jan 2025
- Type of study
- Interventional
- Treatments tested
- Bemnifosbuvir
- Ruzasvir
- Record updated
- 21 October 2025
Who can take part
- Age
- 18 years to 85 years
- Sex
- Women and men
- Healthy volunteers
- Cannot take part
The registry criteria, word for word
Show all 17 criteriaShow less
Who can take part
- Willing and able to provide written informed consent
- Male or female subjects between ≥ 18 years of age (or the legal age of consent per local regulations) and ≤ 85 years of age
- Female subjects of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or to the use of an acceptable effective contraception
- Females must have a negative pregnancy test at Screening and at Day 1 prior to dosing
- Subjects must be direct-acting antiviral (DAA)-treatment-naïve, defined as never exposed to an approved or experimental DAA for HCV
- Documented medical history compatible with chronic HCV
- Liver disease staging assessment as follows:; Absence of cirrhosis (F0 to F3); Compensated cirrhosis (F4)
Who cannot take part
- Abuse of alcohol and/or illicit drug use that could interfere with adherence to study requirements as judged by the investigator
- Prior exposure to any HCV DAA
- Use of other investigational drugs within 30 days of dosing or plans to enroll in another clinical trial of an investigational agent while participating in the present study
- Co-infected with hepatitis B virus (HBV; positive for hepatitis B surface antigen [HBsAg]) and/or human immunodeficiency virus (HIV)
- Subject with known allergy to the study medications or any of their components
- History or signs of decompensated liver disease: ascites, variceal bleeding, hepatic encephalopathy, spontaneous bacterial peritonitis, or other clinical signs of portal hypertension or hepatic insufficiency
- History of hepatocellular carcinoma (HCC) or findings suggestive of possible HCC
- Any other clinically significant medical condition that, in the opinion of the investigator, would jeopardize the safety of the subject or impact the validity of the study results
- Female subject is pregnant or breastfeeding
- Cirrhotic and has a Child-Pugh score >6, corresponding to a Child-Pugh Class B or C
Where in United States
Also in 13 other countries, 49 sites
- San Antonio, TexasHospital not named in the registryNo longer taking part
About the trial
What the trial wants to find out
This is an open-label trial to evaluate safety and efficacy of treatment with BEM + RZR in subjects with chronic HCV infection.
The group in the trial
- Bemnifosbuvir and RuzasvirTreatment being tested
Bemnifosbuvir (BEM; AT-527) Tablets Ruzasvir (RZR; AT-038) Capsules
Treatment: Bemnifosbuvir and Ruzasvir
Data and sources
- Registry record
- Listed on ClinicalTrials.gov and on the EU's official list of trials (CTIS).
- Official title
- A Phase 2, Open-label Study to Assess the Safety and Efficacy of Bemnifosbuvir (BEM) and Ruzasvir (RZR) in Subjects With Chronic Hepatitis C Virus (HCV) Infection
- Record updated
- 21 October 2025