Study to Compare Tenofovir Alafenamide (TAF) Versus Tenofovir Disoproxil Fumarate (TDF) in Participants With Chronic Hepatitis B Infection Who Are Negative for Hepatitis B e Antigen
HBeAg-negative Chronic Hepatitis B
About this trial
This is an interventional treatment trial for HBeAg-negative Chronic Hepatitis B focused on measuring Hepatitis, Tenofovir, Viread
Eligibility Criteria
Key Inclusion Criteria:
- Ability to understand and sign a written informed consent form, which must be obtained prior to initiation of study procedures
- Adult males and non-pregnant, non-lactating females
- Documented evidence of chronic HBV infection
Hepatitis e antigen (HBeAg)-negative, chronic hepatitis B with all of the following:
- HBeAg-negative and hepatitis B e antibody (HBeAb) positive at screening
- Screening HBV DNA ≥ 2 x 10^4 IU/mL
- Screening serum alanine aminotransferase (ALT) level > 60 U/L (males) or > 38 U/L (females) and ≤ 10 x the upper limit of the normal range (ULN)
- Treatment-naive participants (defined as < 12 weeks of oral antiviral treatment with any nucleoside or nucleotide analogue), OR treatment-experienced participants (defined as participants meeting all entry criteria [including HBV DNA and serum ALT criteria] and with ≥ 12 weeks of previous treatment with any nucleoside or nucleotide analogue)
- Previous treatment with interferon (pegylated or non pegylated) must have ended at least 6 months prior to the baseline visit.
- Adequate renal function
- Normal ECG
Key Exclusion Criteria:
- Females who are breastfeeding
- Males and females of reproductive potential who are unwilling to use an "effective", protocol-specified method(s) of contraception during the study
- Co-infection with hepatitis C virus, HIV, or hepatitis D virus
- Evidence of hepatocellular carcinoma
- Any history of, or current evidence of, clinical hepatic decompensation
- Abnormal hematological and biochemical parameters, including aspartate aminotransferase (AST) > 10 x ULN
- Received solid organ or bone marrow transplant
- History of malignancy within the past 5 years, with the exception of specific cancers that are cured by surgical resection; individuals under evaluation for possible malignancy are not eligible
- Currently receiving therapy with immunomodulators (eg, corticosteroids), investigational agents, nephrotoxic agents, or agents capable of modifying renal excretion
- Individuals receiving ongoing therapy with drugs not to be used with tenofovir alafenamide or tenofovir disoproxil fumarate or individuals with a known hypersensitivity to study drugs, metabolites, or formulation excipients
- Current alcohol or substance abuse judged by the investigator to potentially interfere with participant compliance
- Any other clinical condition or prior therapy that, in the opinion of the Investigator, would make the participant unsuitable for the study or unable to comply with dosing requirements
Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Sites / Locations
- Asian Pacific Liver Center
- Stanford University Medical Center
- Huntington Medical Research Institutes
- Research and Education, Inc.
- University California San Francisco (UCSF)
- Silicon Valley Research Institute
- University of Miami
- Digestive Disease Associates, PA
- Henry Ford Health System
- ID Care
- Sing Chan Private Practice
- New Discovery, LLC
- Xiaoli Ma, PC
- Hunter Holmes McGuire VA DVMC
- Monash Medical Centre
- St. Vincent's Hospital
- Royal Melbourne Hospital
- Sir Charles Gairdner Hospital
- Royal Perth Hospital
- University of Calgary
- Zeidler Ledcor Centre Division of Gastroenterology
- Liver and Intestinal Research Centre
- Gordon and Leslie Diamond Health Care Centre
- Dr. John Farley Inc.
- Vancouver Infectious Disease Research and Care Centre
- Gastrointestinal Research Institute (GIRI)
- University of Manitoba
- Toronto General Hospital
- Inspiration Research Limited
- Toronto Liver Centre
- Hôpital de la Croix Rousse
- Hopital Civil de Strasbourg- CHU Service
- Queen Mary Hospital
- Princess Margaret Hospital
- Prince of Wales Hospital
- Alice Ho Miu Ling Nethersole Hospital
- Global Hospitals
- Centre for Liver Research & Diagnostic, Deccan College of Medical Sciences and Allied Hospitals
- All India Institute of Medical Sciences
- Nirmal Hospital
- Seth GS Medical College and KEM Hospital
- Global Hospital Super Specialty & Transplant Centre
- S. R Kalla Memorial Gastro & General Hospital
- Institute of Post Graduate Medical Education And Research
- Postgraduate Institute of Medical Education and Research
- Institute of Liver and Biliary Sciences
- IRCCS Ospedale Casa Sollievo della Sofferenza
- Azienda Ospedaliera S. Orsola - Malpighi
- Azienda Ospedaliero Universitaria Ospedali
- Azienda Ospedaliero- Universitaria Pisana
- Kurume University Hospital
- Kyushu University Hospital Fukuoka
- National Hospital Organization Nagasaki Medical Center
- Osaka University Hospital
- Shin-Kokura Hospital
- Kobe City Medical Center General Hospital
- Japan Red Cross Musashino Hospital
- The Hospital of Hyogo College of Medicine
- Osaka Red Cross Hospital
- Hokkaido University Hospital
- Medical Hospital of Tokyo Medical and Dental University
- Pusan National University Yangsan Hospital
- Kyungpook National University Hospital
- Keimyung University Dongsan Medical Center
- Yonsei University, Severance Hospital
- Asan Medical Center
- Gangnam Severance Hospital
- Samsung Medical Center
- Seoul Saint Mary Hospital
- Chung-Ang University Hospital
- Korea University Guro Hospital
- Auckland Clinical Studies Limited
- Uniwersytecki Szpital Kliniczny w Bialymstoku Klinika
- Szpital Specjalistyczny w Chorzowie Oddział
- SPZOZ, Wojewódzki Specjalistyczny Szpital
- Centrum Badan Klinicznych - Przychodnia Badan
- Institutul National de Boli Infectioase "Prof. Dr. Matei Bals"
- Centrul Medical de Diagnostic si Tratament "Dr. Victor Babes"
- Institutul National de Boli Infectioase Prof.Dr. Matei Bals
- Spitatul Clinic de Boli Infectioase Constanta
- Gastromedica SRL
- Infection Center LLC Building 20, MSH #163 Territory Koltsovo
- 1st Moscow State Medical University University Clinical Hospital #3
- Limited Liability Company "Modern Medicine Clinic"
- Infectious Clinical Hospital #1 of Moscow Healthcare Department
- Novosibirsk State Medical University
- State Novosibirsk Regional Clinical Hospital
- Scientific Research Institute of Clinical Immunology
- Clinical Infectious Hospital named after S.P.Botkin
- Kirov Medical Military Academy
- Research Institute of Influenza
- Hospital Universitari Vall d'Hebron
- Hualien Tzu Chi Hospital
- Kaohsiung Medical University Hospital
- Taichung Veterans General Hospital
- National Cheng Kung University Hospital
- National Taiwan University Hospital
- Dicle University Medical Faculty Department of Infectious Diseases
- Ankara Üniversitesi Gastroenteroloji Bilim Dalı Cebeci
- Uludag Üniversitesi Tıp Fakültesi Gastroenteroloji
- Istanbul Universitesi Cerrahpassa Tip Fakultesi Hastanesi
- Ege Universitesi Tip Fakultesi Hastanesi
- Nottingham University Hospitals NHS Trust
- Barts and The London NHS Trust Royal London Hospital
- King's College Hospital
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Active Comparator
Experimental
TAF 25 mg
TDF 300 mg
Open-label TAF
TAF + TDF placebo for 96 weeks (per amendment 1 & 2) or 144 weeks (per amendment 3).
TDF + TAF placebo for 96 weeks (per amendment 1 & 2) or 144 weeks (per amendment 3).
All participants who complete the double-blind period (96 weeks or 144 weeks) will be eligible to receive open-label TAF until Week 384 of the study. After the end of study treatment, participants can either switch to commercially available anti-HBV treatments in their country or will be followed every 4 weeks, for up to 24 weeks off treatment (treatment-free follow-up (TFFU)) for safety assessment.