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Investigate the Efficacy and Safety of BRII-835 (VIR-2218) and PEG-IFNα Combination Therapy in Chronic HBV Patients

A Phase 2 Multicenter, Randomized, Open-label Study to Investigate the Efficacy and Safety of BRII-835 (VIR-2218) and Pegylated Interferon Alpha (PEG-IFNα) Combination Therapy for the Treatment of Chronic Hepatitis B Virus (HBV) Infection

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05970289
Enrollment
86
Registered
2023-08-01
Start date
2023-08-22
Completion date
2026-02-28
Last updated
2025-09-05

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

Conditions

Chronic Hepatitis B Virus Infection

Brief summary

This study will evaluate the efficacy and safety of PEG-IFNα alone or in combination with different dose levels of BRII-835 (VIR-2218) in participants with chronic hepatitis B virus (HBV) infection.

Interventions

BIOLOGICALPEG-IFNα

PEG-IFNα will be given via subcutaneous injection

DRUGBRII-835

BRII-835 will be given via subcutaneous injection

Sponsors

Vir Biotechnology, Inc.
CollaboratorINDUSTRY
Brii Biosciences Limited
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
No

Inclusion criteria

* Male or female aged 18-60. * Body mass index ≥ 18 kg/m2 and ≤ 32 kg/m2. * Chronic HBV infection for ≥ 6 months. * On NRTI therapy for at least 6 months.

Exclusion criteria

* Any clinically significant chronic or acute medical condition that makes the participant unsuitable for participation. * Significant liver fibrosis or cirrhosis. * History or evidence of drug or alcohol abuse. * History of intolerance to SC injection. * History of chronic liver disease from any cause other than chronic HBV infection. * History of hepatic decompensation. * Contraindications to the use of Peg-IFNα.

Design outcomes

Primary

MeasureTime frame
Proportion of participants with HBsAg loss at end of treatmentUp to Week 48
Proportion of participants with HBsAg loss at 24 weeks post-end of treatmentUp to Week 72
Proportion of participants with treatment-emergent adverse events (TEAEs)Up to Week 72
Proportion of participants with serious adverse events (SAEs)Up to Week 72

Countries

Australia, China, Singapore, South Korea, Thailand

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026