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Imdusiran

Phase 2

Chronic Hepatitis B | Small molecule | Infectious Disease |Arbutus Biopharma Corporation|Last Updated: Sep 11, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
UNCONTROLLEDBiomarker
Total Trials1
Total Enrollment10
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06154278Intrahepatic and Peripheral Responses to Imdusiran (AB-729) in Chronic Hepatitis BPHASE2 RECRUITING 10Jul 25, 2024Jul 1, 2027Sep 11, 20251 United States
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Study Endpoints
Primary Endpoints
Intrahepatic concentration of Imdusiran (AB-729)
During intervention (with first dose of Imdusiran) and after intervention (8 weeks after last dose of Imdusiran)

Intrahepatic drug concentration at day 0 (peak) and week 32 (trough)

Secondary Endpoints
Effect of Imdusiran (AB-729) on hepatitis B surface antigen production
Baseline through study completion, an average of 1 year
Effect of Imdusiran (AB-729) on hepatitis B surface antibody levels
Baseline through study completion, an average of 1 year
Effect of Imdusiran (AB-729) on hepatitis B virus RNA
Baseline through study completion, an average of 1 year
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Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeBASIC_SCIENCE
Treatment Arms
ArmTypeDescription
Imdusiran (AB-729)EXPERIMENTALParticipants receive subcutaneous injections of 60mg, one injection every 8 weeks for 4 doses.
Interventions
NameTypeDescription
Imdusiran (AB-729)DRUG60mg subcutaneously, every 8 weeks, for a total of 4 doses
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Provision of signed and dated informed consent form 2. Stated willingness to comply with all study procedures and availability for the duration of the study 3. Male or female, over 18 years of age on the date of screening 4. In good general health as evidenced by medical hist...

Countries:United States
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT06154278primaryCompletionDate: changed
LOWMay 24, 2026NCT06154278studyFirstPostDate: changed