A Study of JNJ-73763989 + Nucleos(t)Ide Analog in Participants Co-Infected With Hepatitis B and Hepatitis D Virus
REEF-D
A Phase 2, Multicenter, Randomized, Double-blind, Placebo-Controlled Study With Deferred Active Treatment to Investigate the Efficacy, Safety, and Pharmacokinetics of JNJ-73763989 + Nucleos(t)Ide Analog in Participants Co-Infected With Hepatitis B and Hepatitis D Virus
4 other identifiers
interventional
52
15 countries
61
Brief Summary
The purpose of the study is to evaluate on-treatment efficacy against hepatitis D virus (HDV) of JNJ-73763989 + nucleos(t)ide analog (NA) regimen compared to NA alone.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for phase_2
Started Sep 2020
Typical duration for phase_2
61 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
August 28, 2020
CompletedFirst Posted
Study publicly available on registry
September 2, 2020
CompletedStudy Start
First participant enrolled
September 17, 2020
CompletedPrimary Completion
Last participant's last visit for primary outcome
October 19, 2023
CompletedResults Posted
Study results publicly available
November 6, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
March 5, 2025
CompletedApril 25, 2025
April 1, 2025
3.1 years
August 28, 2020
October 15, 2024
April 24, 2025
Conditions
Outcome Measures
Primary Outcomes (2)
Double-blind: Part 1: Percentage of Participants With HDV Ribonucleic Acid (RNA) >=2 log10 IU/mL Decline From Baseline or HDV RNA Target Not Detected (TND) in Combination With Normal Alanine Aminotransferase (ALT) at Week 48 (Multiple Imputation Approach)
Percentage of participants with HDV RNA greater than or equal to (\>=) 2 log10 International Units Per Milliliter (IU/mL) decline from baseline or HDV RNA TND in combination with normal ALT at Week 48 using multiple imputation approach was reported. Target not detected (TND) was defined as no traces of HBV RNA were detected/found. Normal ALT was defined as ALT less than (\<) upper limit of normal (ULN) with ULN = 34 units per liter (U/L) for female and 43 U/L for male. The baseline assessment was defined as the last observed non-missing measurement before the date and time of the first administration of any of study intervention on Day 1. The multiple imputation approach was derived using a longitudinal multiple regression model to impute missing data.
At Week 48
Double-blind: Part 2: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline or HDV RNA TND in Combination With ALT at Week 48 (Multiple Imputation Approach)
Percentage of participants with HDV RNA \>=2 log10 IU/mL decline from baseline or HDV RNA TND in combination with normal ALT at Week 48 using multiple imputation approach was reported. TND was defined as no traces of HBV RNA were detected/found. Normal ALT was defined as ALT \<ULN with ULN = 34 U/L for female and 43 U/L for male. The baseline assessment was defined as the last observed non-missing measurement before the date and time of the first administration of any of study intervention on Day 1. The multiple imputation approach was derived using a longitudinal multiple regression model to impute missing data.
At Week 48
Study Arms (2)
Immediate Active Treatment arm: JNJ-73763989 + NA
EXPERIMENTALParticipants will receive JNJ-73763989 subcutaneous (SC) injection every 4 weeks (Q4W) along with NA (entecavir \[ETV\], tenofovir disoproxil, or tenofovir alafenamide \[TAF\]) once daily for 144 Weeks in Part 1 and for at least 96 weeks in Part 2.
Deferred Active Treatment arm: Placebo+NA+JNJ-73763989+NA
PLACEBO COMPARATORParticipants will receive matching placebo to JNJ-73763989 SC injection Q4W along with NA (ETV, tenofovir disoproxil, or TAF) once daily for 52 Weeks followed by JNJ-73763989 SC injection Q4W along with NA once daily for 96 weeks in Part 1 and for at least 48 weeks in Part 2.
Interventions
JNJ-73763989 will be administered as a SC injection.
Matching placebo to JNJ-73763989 will be administered as a SC injection.
ETV monohydrate film coated tablet will be administered orally.
Tenofovir disoproxil film-coated tablet will be administered orally.
TAF film coated tablet will be administered orally.
Eligibility Criteria
You may qualify if:
- Medically stable based on physical examination, medical history, vital signs, electrocardiogram (ECG) at screening
- Chronic hepatitis B virus (HBV) and hepatitis D virus (HDV) co-infection with documentation at least 6 months prior to screening
- For Part 1: hepatitis D RNA (HDV RNA) greater than or equal to (\>=) 1000 international units per milliliter (IU/mL) at screening. For Part 2: must have HDV RNA values \>= 500 IU/mL, and must have hepatitis B surface antigen (HBsAg) values less than or equal to (\<=) 10000 IU/mL at screening or HDV RNA values at screening are \<= 100000 IU/mL
- Alanine aminotransferase (ALT) greater than upper limit normal (ULN) but less than 10 times (ULN)
- Body mass index (BMI) between 18.0 and 35.0 kilogram per meter square (kg/m\^2), extremes included
- Highly effective contraceptive measures in place for female participants of childbearing potential or male participants with female partners of childbearing potential
- Non-cirrhotic participants and participants with compensated cirrhosis (Child Pugh class A) at screening (Part 1) and participants must have absence of cirrhosis and platelet count of \>= 140000 per deciliter (dL) for enrollment into Part-2
You may not qualify if:
- Evidence of infection with hepatitis A, C, or E virus infection or evidence of human immunodeficiency, virus type 1 (HIV-1) or HIV-2 infection at screening
- History or evidence of clinical signs/symptoms of hepatic decompensation including but not limited to: portal hypertension, ascites, hepatic encephalopathy, esophageal varices or any laboratory abnormalities indicating a reduced liver function as defined in the protocol
- Evidence of liver disease of non-HBV/HDV etiology
- Signs of hepatocellular carcinoma (HCC)
- Significant laboratory abnormalities as defined in the protocol at screening
- Participants with a history of malignancy within 5 years before screening
- Abnormal sinus rhythm or ECG parameters at screening as defined in the protocol
- History of or current cardiac arrhythmia or history or clinical evidence of significant or unstable cardiac disease
- Participants with any current or previous illness for which, in the opinion of the investigator and/or sponsor, participation would not be in the best interest of the participant
- History of or current clinically significant skin disease or drug rash
- Participants with known allergies, hypersensitivity, or intolerance to JNJ-3989 or its excipients or excipients of the placebo content
- Contraindications to the use of entecavir (ETV), tenofovir disoproxil, or tenofovir alafenamide (TAF) per local prescribing information
- Participants who have taken any therapies disallowed per protocol
- Female participants who are pregnant, or breast-feeding, or planning to become pregnant while enrolled in this study or within 90 days after the last dose of study intervention
- Male participants who plan to father a child while enrolled
- +2 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (61)
Stanford University School of Medicine
Redwood City, California, 94063, United States
Harvard Medical School Massachusetts General Hospital
Boston, Massachusetts, 02114, United States
Royal Prince Alfred Hospital
Camperdown, 2050, Australia
Western Health
Footscray, 3011, Australia
Westmead Hospital
Westmead, 2145, Australia
Centro Oncológico De Roraima
Boa Vista, 69304015, Brazil
Fundacao De Medicina Tropical Doutor Heitor Vieira Dourado
Manaus, 69040-000, Brazil
Cepem - Centro de Pesquisa Em Medicina Tropical
Porto Velho, 76812-329, Brazil
Beijing Ditan Hospital Capical Medical University
Beijing, 100015, China
Peking University People s Hospital
Beijing, 100044, China
The First Bethune Hospital of Jilin University
Changchun, 130021, China
West China Hospital Sichuan University
Chengdu, 610041, China
The Second Affiliated Hospital of Chongqing Medical University
Chongqing, 400010, China
Guangzhou Eighth People's Hospital, Guangzhou Medical University
Guangzhou, 510000, China
Nanfang Hospital
Guangzhou, 510515, China
The First Affiliated Hospital Zhejiang University College of Medicine
Hangzhou, 310003, China
Huashan Hospital Fudan University
Shanghai, 200040, China
Hopital Beaujon
Clichy, 92110, France
Hopital de La Croix Rousse
Lyon, 69004, France
CHU de Nantes hotel Dieu
Nantes, 44093, France
CHU Hopital Saint Antoine
Paris, 75012, France
Chu Rennes Hopital Pontchaillou
Rennes, 35033, France
Universitatsklinikum Essen
Essen, 45147, Germany
Universitätsklinikum Johann Wolfgang Goethe- Universität Frankfurt Medizinische Klinik 1
Frankfurt, 60590, Germany
Medizinische Hochschule Hannover
Hanover, 30625, Germany
Irccs Ospedale Maggiore Di Milano
Milan, 20122, Italy
Azienda Ospedaliero Universitaria Pisana
Pisa, 56124, Italy
Universita degli Studi di Roma 'La Sapienza' - Umberto I Policlinico di Roma
Rome, 00161, Italy
Ospedale Molinette, AO Città della Salute e della Scienza di
Torino, 10126, Italy
Tokyo Medical and Dental University Hospital
Bunkyō City, 113 8519, Japan
Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital
Hiroshima, 730-8619, Japan
National Hospital Organization Shikoku Cancer Center
Iizuka-shi, 820-8505, Japan
Ikeda City Hospital
Ikeda, 563-8510, Japan
Kumamoto University Hospital
Kumamoto, 860-8556, Japan
Kumamoto Shinto General Hospital
Kumamoto, 862 8655, Japan
Nagasaki University Hospital
Nagasaki, 852-8501, Japan
National Hospital Organization Nagasaki Medical Center
Nagasaki, 856-8562, Japan
University of the Ryukyus Hospital
Nakagami Gun, 903-0215, Japan
Nakagami Hospital
Okinawa, 904-2195, Japan
Suita Municipal Hospital
Suita, 564-8567, Japan
Osaka University Hospital
Suita-shi, 565-0871, Japan
Tokyo Metropolitan Bokutoh Hospital
Sumida Ku, 130 8575, Japan
New Zealand Clinical Research
Auckland, 1010, New Zealand
Krasnoyarsk Regional Center For AIDS And Infectious Diseases Treatment And Prophylaxis
Krasnoyarsk, 660049, Russia
St. Petersburg City Center for AIDS and Infectious Diseases Treatment and Prophylaxis
Saint Petersburg, 190103, Russia
Medical Company Hepatolog Ltd
Samara, 443045, Russia
Hosp Clinic de Barcelona
Barcelona, 8028, Spain
Hosp Univ Vall D Hebron
Barcelona, 8035, Spain
Hosp. Univ. 12 de Octubre
Madrid, 28041, Spain
Hosp. Univ. Marques de Valdecilla
Santander, 39008, Spain
Danderyds Sjukhus
Danderyd, 18288, Sweden
Skanes universitetssjukhus
Malmo, 20502, Sweden
Karolinska Universitetssjukhuset Huddinge
Stockholm, 14186, Sweden
Kaohsiung Medical University Chung Ho Memorial Hospital
Kaohsiung City, 80756, Taiwan
National Taiwan University Hospital
Taipei, 10002, Taiwan
China Medical University Hospital
Tiachung, Taiwan
Istanbul University Cerrahpasa Medical Faculty
Istanbul, 34098, Turkey (Türkiye)
Ege University Medical of Faculty, Department of Gastroenterology
Izmir, 35100, Turkey (Türkiye)
Kocaeli University Medical Faculty
Kocaeli, 41001, Turkey (Türkiye)
Karadeniz Teknik University Medical Faculty
Trabzon, 61080, Turkey (Türkiye)
Kings College Hospital
London, SE5 9RF, United Kingdom
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Results Point of Contact
- Title
- Senior Director Medical Lead
- Organization
- Janssen Research & Development, LLC
Study Officials
- STUDY DIRECTOR
Janssen Research & Development, LLC Clinical Trial
Janssen Research & Development, LLC
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- DOUBLE
- Who Masked
- PARTICIPANT, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
August 28, 2020
First Posted
September 2, 2020
Study Start
September 17, 2020
Primary Completion
October 19, 2023
Study Completion
March 5, 2025
Last Updated
April 25, 2025
Results First Posted
November 6, 2024
Record last verified: 2025-04
Data Sharing
- IPD Sharing
- Will share
The data sharing policy of the Janssen Pharmaceutical Companies of Johnson \& Johnson is available at www.janssen.com/clinical-trials/transparency. As noted on this site, requests for access to the study data can be submitted through Yale Open Data Access (YODA) Project site at yoda.yale.edu