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Clinical Trials List

Protocol NumberABI-H2158-201
NCT Number(ClinicalTrials.gov Identfier)NCT04398134

2020-10-01 - 2023-06-05

Phase II

Not yet recruiting5

ICD-10B18.1

Chronic viral hepatitis B without delta-agent

ICD-9070.32

Viral hepatitis B without mention of hepatic coma, chronic, without mention of hepatitis delta

A Phase 2a, Multicenter, Single-Blind, Placebo-Controlled, Multiple Cohort Study Evaluating ABI-H2158-Containing Regimens in Chronic Hepatitis B Infection

  • Trial Applicant

    Syneos Health

  • Sponsor

    Assembly Biosciences, Inc.

  • Trial scale

    Multi-Regional Multi-Center

  • Update

    2025/08/20

Investigators and Locations

Principal Investigator Cheng-Yuan Peng Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Not yet recruiting

Principal Investigator Chao-Wei Hsu Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Not yet recruiting

Principal Investigator 王鴻源 Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Not yet recruiting

Principal Investigator Chun-Jen Liu Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Not yet recruiting

Principal Investigator Wan-Long Chuang Digestive System Department

Co-Principal Investigator

The Actual Total Number of Participants Enrolled

0 Not yet recruiting

Condition/Disease

Chronic Hepatitis B Infection

Objectives

This Phase 2a study will assess the safety, antiviral activity, and pharmacokinetics (PK) of ABI-H2158 administered once daily for up to 72 weeks in combination with entecavir (ETV) in participants with chronic hepatitis B virus (HBV) infection.

Test Drug

ABI-H2158

Active Ingredient

ABI-H2158

Dosage Form

tablet

Dosage

100

Endpoints

Primary Outcome Measures :
Number of Participants with One or More Adverse Events [ Time Frame: Up to 96 weeks ]
Number of Participants with Premature Treatment Discontinuation due to an Adverse Event [ Time Frame: Up to 96 weeks ]
Change from Baseline in Mean log10 HBV DNA [ Time Frame: Baseline and Week 24 ]

Secondary Outcome Measures :
Trough Plasma Concentration of ABI-H2158 [ Time Frame: Predose on Day 1, Week 4, Week 48, and Week 72 ]
Trough-to-Peak Plasma Concentration Ratio of ABI-H2158 [ Time Frame: Predose on Day 1 and Weeks 4, 48, and 72 and at pre-specified intervals after dosing on Day 1 and Weeks 2, 8, 12, 16, 20, 24, and 28 ]
Trough Plasma Concentration of ETV [ Time Frame: Predose on Day 1, Week 4, Week 48, and Week 72 ]
Trough-to-Peak Plasma Concentration Ratio of ETV [ Time Frame: Predose on Day 1 and Weeks 4, 48, and 72 and at pre-specified intervals after dosing on Day 1 and Weeks 2, 8, 12, 16, 20, 24, and 28 ]
Change from Baseline in Mean log10 HBV Pre-genomic RNA (pgRNA) [ Time Frame: Baseline and Week 24 ]
Number of Participants with Reduction in HBV DNA Below the Assay Lower Limit of Quantitation [ Time Frame: Up to 96 weeks ]
Number of Participants with Reduction in HBV pgRNA Below the Assay Lower Limit of Quantitation [ Time Frame: Up to 96 weeks ]
Change from Baseline in Plasma HBV Surface Antigen (HBsAg) [ Time Frame: Baseline and up to 96 weeks ]
Change from Baseline in Plasma HBV "e" Antigen (HBeAg) [ Time Frame: Baseline and up to 96 weeks ]
Change from Baseline in Plasma HBV Core-related Antigen (HBcrAg) [ Time Frame: Baseline and up to 96 weeks ]
Number of Participants with Normal Serum Alanine Aminotransferase (ALT) [ Time Frame: Baseline and up to Week 24 ]
Number of Participants with HBV Core Protein Gene Sequence Variation Potentially Associated with Treatment Nonresponse [ Time Frame: Up to 96 weeks ]

Inclution Criteria

Inclusion Criteria:
Body mass index of 18 - 36 kg/m^2 and body weight ≥45 kg
HBeAg ≥500 IU/mL at Screening
In good general health except for chronic HBV infection for ≥6 months documented, for example, by at least two measurements of HBsAg positivity and/or detectable HBV DNA ≥6 months apart
Lack of cirrhosis or advanced liver disease

Exclusion Criteria

Exclusion Criteria:

Prior treatment for chronic HBV infection with lamivudine, telbivudine, adefovir, standard of care nucleoside or nucleotide analogue (NrtI), HBV core inhibitors, or an investigational agent for HBV infection
History or evidence of advanced liver disease or hepatic decompensation (including jaundice, ascites, portal hypertension, gastrointestinal bleeding, esophageal varices, hepatic encephalopathy)
History or presence of clinically significant medical conditions requiring frequent medical management or pharmacologic or surgical treatment

The Estimated Number of Participants

  • Taiwan

    15 participants

  • Global

    80 participants