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Long-Term Follow-up Study for Subjects With CHB Previously Treated With Imdusiran (AB729)

A Long-Term Follow-up Study for Subjects With Chronic Hepatitis B Previously Treated With Imdusiran (AB-729)

Who can join

Ages 20 to 70 · All sexes

Key Inclusion Criteria:

* Have participated in a prior imdusiran clinical trial,
* Have discontinued NA therapy in that trial and remain off NA therapy,
* Have completed less than 3 years of follow-up visits after NA discontinuation in the parent study.
* Have the ability to review and provide signed informed consent which includes compliance with all protocol-specified visit schedules and requirements.

Exclusion Criteria:

* Not applicable

About the study

This is a long term follow-up study for chronic hepatitis B (CHB) subjects who have received imdusiran treatment in a prior clinical trial, stopped NA therapy during that trial, and remain off therapy. Subjects may enroll after completing the end of study visit (baseline visit within 12 weeks ± 1 week from the end of study \[EOS\] visit) from their imdusiran clinical trial (the "parent study"). No interventions will be performed in this study other than blood sample collections, review of current medications, and reporting of any adverse events related to study procedures or NA therapy if restarted. Study participation will be for approximately 2 years (to complete a total of at least 3 years of follow-up while off NA therapy, inclusive of parent study participation).

What is being tested

• Non-interventional (other)

Sponsor: Arbutus Biopharma Corporation · Participants: 50 · Started: Jul 11, 2024

Contact the study team

• Michael Child · Phone: 267-332-6213

Official record on ClinicalTrials.gov — NCT06277037

Locations in the U.S.

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.