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AB-729

Phase 2

Chronic Hepatitis b | Small molecule | Infectious Disease |Arbutus Biopharma Corporation|Last Updated: Apr 29, 2026

Success Probability
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Market & Valuation
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Trial Design
RandomizedCONTROLLEDDMC
Total Trials1
Total Enrollment43
FDA Designations
No designations recorded
Clinical trial landscape

AB-729 · 1 trial · 1 indication

Phase 2 1
NCT04980482Open-Label Study of AB-729, Nucleos(t)Ide Analogue and Pegylated Interferon Alfa-2a in Subjects With Chronic Hepatitis B InfectionChronic Hepatitis b
COMPLETED43 Analytics
PHASE2COMPLETED
Open-Label Study of AB-729, Nucleos(t)Ide Analogue and Pegylated Interferon Alfa-2a in Subjects With Chronic Hepatitis B Infection
Chronic Hepatitis bUnlock trial analytics
Study Endpoints
Primary Endpoints
The Frequency and Severity of Treatment Emergent Adverse Events (TEAEs), Discontinuations Due to AEs and Lab Abnormalities After Dosing With AB-729 Plus Peg-IFNα-2a
Up to 124 weeks
Secondary Endpoints
Change From Baseline in HBsAg and Other Virologic Markers at Each Time Point
Up to 124 weeks
Proportion of Subjects With HBsAb Seroconversion at Each Timepoint
Up to 124 weeks
Proportion of Subjects Who Are Eligible to Stop NA After Week 24 of Follow up
Up to 76 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Cohort A, Group 1EXPERIMENTALAB-729 60 mg SC every 8 weeks + NA for 24 weeks, then randomized to: AB-729 60 mg SC every 8 weeks + NA + Peg-IFNα-2a 180 mcg SC every week for 24 weeks.
Cohort A, Group 2EXPERIMENTALAB-729 60 mg SC every 8 weeks + NA for 24 weeks, then randomized to: NA + Peg-IFNα-2a 180 mcg SC every week for 24 weeks.
Cohort B, Group 1EXPERIMENTALAB-729 60 mg SC every 8 weeks + NA for 24 weeks, then randomized to: AB-729 60 mg SC every 8 weeks + NA + Peg-IFNα-2a 180 mcg SC every week for 12 weeks.
Cohort B, Group 2EXPERIMENTALAB-729 60 mg SC every 8 weeks + NA for 24 weeks, then randomized to: NA + Peg-IFNα-2a 180 mcg SC every week for 12 weeks.
Interventions
NameTypeDescription
AB-729DRUGsubcutaneous injection
Peg-IFNα-2aDRUGsubcutaneous injection
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Eligibility Criteria
Age Range18 Years to 60 Years
SexALL
Healthy VolunteersNo
Study Sites17

Inclusion Criteria: * Chronic hepatitis B virus infection with documentation at least 6 months prior to screening * Subjects must have been receiving either TAF, TDF (or equivalent), or ETV consistently for ≥12 months prior to dosing Day 1 * HBV DNA \<LLOQ at Screening * HBsAg between 100 and 5,000...

Countries:United StatesAustraliaHong KongMoldovaSouth KoreaTaiwanUkraine
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Recent Changes (Last 90 Days)
MEDIUMMay 30, 2026NCT04980482TRIAL_REMOVED: changed
MEDIUMMay 30, 2026NCT04980482TRIAL_REMOVED: changed
MEDIUMMay 30, 2026NCT04980482TRIAL_REMOVED: changed
MEDIUMMay 30, 2026NCT04980482TRIAL_REMOVED: changed