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Clinical Trial Summary

The purpose of this study is to determine whether ARC-520 in combination with entecavir is effective in the treatment of patients with chronic HBV Infection.


Clinical Trial Description

Treatment with ARC-520 for injection is expected to reduce all HBV proteins and replicative intermediates via ribonucleic acid (RNA) interference. The magnitude of the reduction and duration of effect will depend on the dose. Since to date ARC-520 has not been administered to patients with chronic HBV infection, the effective therapeutic dose in patients with chronic HBV infection is unknown. This study is designed to assess the antiviral activity of ARC-520, especially its effect on HBsAg, in patients with chronic HBV infection at different dose levels.

This is a multicenter, randomized, double-blind, placebo-controlled, single-dose escalation study of ARC 520 in combination with entecavir administered to participants with hepatitis B virus e antigen (HBeAg)-negative (Cohorts 1 through 4) or HBeAg-positive (Cohort 5) immune active, chronic HBV infection, followed by a two-dose open-label cohort (Cohort 6), three open-label single-dose cohorts in treatment-naïve participants (Cohorts 7, 11 and 12) and an open-label multi-dose extension study (Cohorts 8, 9, 10). Cohort 6 will investigate ARC-520 in combination with entecavir administered in two doses to participants with HBeAg-positive immune-active chronic HBV infection. Cohorts 7, 11 and 12 will enroll treatment-naïve participants. Cohort 8 will only enroll participants previously completing Cohorts 1-4. Cohort 9 will only enroll participants previously completing Cohort 5 or 6. Cohort 10 will only enroll participants previously completing Cohort 7.

Participants will undergo the following evaluations at regular intervals during the study: medical history, physical examinations, vital sign measurements (blood pressure, heart rate, respiratory rate, and temperature), weight, adverse events (AEs), 12-lead electrocardiograms (ECGs), concomitant medication, blood sample collection for hematology, coagulation, chemistry, pharmacokinetic (PK) and exploratory pharmacodynamic (PD) measures, urinalysis, HBV serology, HBV genotyping and sequencing, follicle stimulating hormone (FSH) testing and pregnancy testing for females of childbearing potential. Clinically significant changes including AEs will be followed until resolution, until the condition stabilizes, until the event is otherwise explained, or until the participant is lost to follow-up. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02065336
Study type Interventional
Source Arrowhead Pharmaceuticals
Contact
Status Terminated
Phase Phase 2
Start date March 2014
Completion date January 2017

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