Study to Compare Tenofovir Alafenamide (TAF) Versus Tenofovir Disoproxil Fumarate (TDF) in Participants With Chronic Hepatitis B Infection Who Are Positive for Hepatitis B e Antigen
HBeAg-positive Chronic Hepatitis B
About this trial
This is an interventional treatment trial for HBeAg-positive 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
HBeAg-positive, chronic hepatitis B with all of the following:
- HBeAg-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
- Coalition of Inclusive Medicine
- Stanford University Medical Center
- Huntington Medical Research Institutes
- Research and Education, Inc.
- Silicon Valley Research Institute
- University of Miami
- Digestive Disease Associates, PA
- Tufts Medical Center, Inc
- Henry Ford Health System
- Sing Chan Private Practice
- New Discovery, LLC
- Jefferson Medical College
- Xiaoli Ma, PC
- Texas Clinical Research Institute, LLC
- Kelsey Research Foundation
- Royal Prince Alfred Hospital
- Concord Repatriation General Hospital
- Westmead Hospital Westmead
- Royal Adelaide Hospital
- Monash Medical Centre
- St. Vincent's Hospital
- Footscray Hospital
- Austin Health
- The Alfred Hospital
- The Royal Melbourne Hospital
- Royal Perth Hospital
- Tokuda Hospital - Sofia
- MHAT Alexandrovska Medical University, Sofia
- MMA Hospital of Active Treatment
- MHAT Sofia Med
- University of Calgary
- Zeidler Ledcor Centre Division of Gastroenterology / Department of Medicine
- 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, Health Sciences Center
- The Ottawa Hospital
- University Health Network / Toronto General Hospital
- Inspiration Research Limited
- Toronto Liver Centre
- Hopital Beaujon
- Hopital Pitie Salpetriere
- Hopital Civil de Strasbourg
- Hopital Paul Brousse
- Queen Mary Hospital
- Princess Margaret Hospital
- Prince of Wales Hospital
- Alice Ho Miu Ling Nethersole Hospital
- Tuen Mun Hospital
- BYL Nair Hospital & T N Medical College
- Government Medical College and Superspecialty Hospital
- Midas Multispecialty Hospital
- SMS Medical College & Hospital
- Postgraduate Institute of Medical Education & Research
- YR Gaitonde Centre for AIDS Research and Education
- VGM Hospital
- Gleneagles Global Hospital
- Centre for Liver Research & Diagnostic, Deccan College of Medical Sciences and Allied Hospitals
- S. R Kalla Memorial Gastro & General Hospital
- Peerless Hospital & B.K.Roy Research Center
- Postgraduate Institute of Medical Education & Research
- Seth GS Medical College and KEM Hospital
- All India Institute of Medical Sciences
- Sir Ganga Ram Hospital
- Institute of Liver and Biliary Sciences
- Global Hospital Super Specialty & Transplant Centre
- Nirmal Hospital
- Azienda Ospedaliera di Bologna - Policlinico S. Orsola Malpighi
- Istituto Europeo di Oncologia
- Azienda Ospedaliero Universitaria Ospedali Riuniti di
- Policlinico Universitario G. Martino via Consolare
- Azienda Ospedale San Paolo
- Azienda Ospedaliera di Padova
- Azienda Ospedaliera di Padova
- Azienda Ospedaliero Universitaria Pisana
- Kyushu University Hospital
- Shin-Kokura Hospital
- National Hospital Organization Kyushu Medical Center
- Kagawa Prefectural Central Hospital
- Kobe City Medical Center General Hospital
- Yamanashi Prefectural Central Hospital
- Kurume University Hospital
- Kyoto Prefectural University of Medicine
- Japan Red Cross Musashino Hospital
- Hyogo College of Medicine
- Okayama University Hospital
- National Hospital Organization Nagasaki Medical Center
- Osaka Red Cross Hospital
- Osaka University Hospital
- Hokkaido University Hospital
- Medical Hospital of Tokyo Medical and Dental University
- Kosin University College of Medicine
- Pusan National University Hospital
- SoonChunHyang University Hospital Cheonan
- Keimyung University Dongsan Medical Center
- Kyungpook National University Hospital
- Konyang University Hospital
- Inje University Ilsan Paik Hospital
- Ajou University Hospital
- Seoul National University Bundang Hospital
- Seoul National University Hospital
- Severance Hospital Yonsei University Health System
- Samsung Medical Center
- Gangnam Severance Hospital
- Seoul Saint Mary Hospital
- Asan Medical Center
- Konkuk University Medical Center
- Korea University Guro Hospital
- SMG-SNU Boramae Medical Center
- Chung-Ang University Hospital
- Ulsan University Hospital
- Yonsei Unversity Wonju
- Pusan National University Yangsan Hospital
- Auckland Clinical Studies Limited
- Waikato Hospital (District Health Board)
- Uniwersytecki Szpital Kliniczny w Bialymstoku Klinika
- Szpital Specjalistyczny
- SPZOZ, Wojewódzki Specjalistyczny Szpital
- SP ZOZ Wojewódzki Szpital Zakazny
- Centrum Badan Klinicznych
- 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
- Spitalul Clinic Judetean de Urgenta Timisoara
- Lipetsk Regional Center for Prevention and Control of AIDS and Infectious Diseases
- Scientific Research Institute of Nutrition
- People's Friendship University of Russia
- 1st Moscow State Medical University University Clinical Hospital #3
- Limited Liability Company "Modern Medicine Clinic"
- Institute of Clinical Immunology RAMS, Clinic of Immunopathology
- Scientific Research Institute of Clinical Immunology
- Municipal Clinical Hospital n.a. S.P. Botkin
- Research Institute of Influenza
- Medical Company Hepatology
- Sverdlovsk Regional Clinical Hospital #1
- National University Hospital Singapore
- Singapore General Hospital
- Changi General Hospital Pte Ltd.
- Hospital Universitari Vall d'Hebron
- Hospital Universitario Virgen del Rocio
- Chiayi Christian Hospital
- Hualien Tzu Chi Medical Center
- Kaohsiung Med. College Hosp. Dept. of Internal Medicine
- China Medical University Hospital
- National Cheng Kung University Hospital
- National Taiwan University Hospital
- Cathay General Hospital
- Far-Eastern Memorial Hospital
- Ankara Üniversitesi Gastroenteroloji Bilim Dalı Cebeci
- University of Uludag
- Dicle University Medical Faculty Department of Infectious Diseases
- Istanbul Universitesi Cerrahpassa Tip Fakultesi Enfeksiyon
- Ege Universitesi Tip Fakultesi Hastanesi
- Barts & The London NHS Trust
- Royal Free Hospital
- King's College Hospital
- Nottingham University Hospitals NHS Trust
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.