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ARO-HBV

Phase 1

Hepatitis B | Small molecule | Infectious Disease |Arrowhead Pharmaceuticals, Inc.|Last Updated: Oct 22, 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
RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment114
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03365947Study of ARO-HBV in Normal Adult Volunteers and Patients With Hepatitis B Virus (HBV)PHASE1 COMPLETED 114Mar 27, 2018Apr 23, 2020Oct 22, 20257 Australia, Hong Kong +1
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Study Endpoints
Primary Endpoints
Number of Participants With Treatment Emergent Adverse Events (TEAEs) Possibly or Probably Related to Treatment
NHV participants: up to Day 29 (± 2 days); CHB participants: Day 113 (± 2 days)

An adverse event (AE) is any untoward medical occurrence which does not necessarily have to have a causal relationship with this treatment. TEAEs were defined as AEs with onset after administration of the study drug, or when a preexisting medical condition increases in severity or frequency after study drug administration. Assessment of causality utilized 3 possible categories: not related, possibly related and probably related.

Secondary Endpoints
Part A, Pharmacokinetics (PK) of ARO-HBV Analytes: Maximum Observed Plasma Concentration (Cmax)
Day 1: 0 (pre-dose), 15 minutes, 0.5, 1, 2, 3, 6, 24 & 48 hours post-dose
Part A, PK of ARO-HBV Analytes : Time to Maximum Plasma Concentration (Tmax)
Day 1: 0 (pre-dose), 15 minutes, 0.5, 1, 2, 3, 6, 24 & 48 hours post-dose
Part A, PK of ARO-HBV Analytes: Area Under the Plasma Concentration Versus Time Curve From Zero to 24 Hours (AUC0-24)
Day 1: 0 (pre-dose), 15 minutes, 0.5, 1, 2, 3, 6, 24 hours post-dose
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ARO-HBV 35 mgEXPERIMENTALSingle dose of ARO-HBV 35 mg subcutaneous (sc) injection in normal healthy volunteers
ARO-HBV 100 mgEXPERIMENTALSingle dose of ARO-HBV 100 mg sc injection in normal healthy volunteers
ARO-HBV 200 mgEXPERIMENTALSingle dose of ARO-HBV 200 mg sc injection in normal healthy volunteers
ARO-HBV 300 mgEXPERIMENTALSingle dose of ARO-HBV 300 mg sc injection in normal healthy volunteers
ARO-HBV 400 mgEXPERIMENTALSingle dose of ARO-HBV 400 mg sc injection in normal healthy volunteers
PlaceboPLACEBO_COMPARATORSterile normal saline (0.9% NaCl) sc injection in normal healthy volunteers
ARO-HBV 25 mg, Q28DEXPERIMENTALARO-HBV 25 mg sc injection every 28 days (Q28D) in participants with chronic hepatitis B
ARO-HBV 50 mg Q28DEXPERIMENTALARO-HBV 50 mg sc injection Q28D in participants with chronic hepatitis B
ARO-HBV 100 mg Q28DEXPERIMENTALARO-HBV 100 mg sc injection Q28D in participants with chronic hepatitis B
ARO-HBV 200 mg Q28DEXPERIMENTALARO-HBV 200 mg sc injection Q28D in participants with chronic hepatitis B
ARO-HBV 300 mg Q28DEXPERIMENTALARO-HBV 300 mg sc injection Q28D in participants with chronic hepatitis B
ARO-HBV 400 mg Q28DEXPERIMENTALARO-HBV 400 mg sc injection Q28D in participants with chronic hepatitis B
ARO-HBV 100 mg Q14DEXPERIMENTALARO-HBV 100 mg sc injection every 14 days (Q14D) in participants with chronic hepatitis B
ARO-HBV 100 mg Q7DEXPERIMENTALARO-HBV 100 mg sc injection every 7 days (Q7D) in participants with chronic hepatitis B
ARO-HBV 300 mg, Q28D, HBeAg+/ Trt NaïveEXPERIMENTALARO-HBV 300 mg sc injection Q28D in hepatitis B e antigen positive/treatment naïve (HBeAg+/Trt Naïve) participants with chronic hepatitis B
ARO-HBV 300 mg, Q28D, HBeAg+/ NUCEXPERIMENTALARO-HBV 300 mg sc injection Q28D in HBeAg+/nucleotide or nucleoside analog treated (HBeAg+/NUC) participants with chronic hepatitis B
ARO-HBV 200 mg, Q7DEXPERIMENTALARO-HBV 200 mg sc injection Q7D in participants with chronic hepatitis B
ARO-HBV 300 mg, Q7DEXPERIMENTALARO-HBV 300 mg sc injection Q7D in participants with chronic hepatitis B
ARO-HBV 200 mg Q28D + JNJ-56136379 250 mgEXPERIMENTALARO-HBV 200 mg sc injection Q28D plus JNJ-56136379 250 mg in participants with chronic hepatitis B
Interventions
NameTypeDescription
ARO-HBVDRUGsc injection
Sterile Normal Saline (0.9% NaCl)OTHERsc injection
JNJ-56136379DRUGoral tablets
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Eligibility Criteria
Age Range18 Years — 65 Years
SexALL
Healthy VolunteersYes
Study Sites7

Inclusion Criteria for Parts A \& B: * Women of childbearing potential must have a negative pregnancy test, cannot be breast feeding, and must be willing to use contraception. * Willing to provide written informed consent and comply with study requirements Additional Inclusion Criteria for Part B:...

Countries:AustraliaHong KongNew Zealand
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