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Um estudo do análogo JNJ-73763989 + Nucleos(t)Ide em participantes co-infectados com os vírus da hepatite B e D (REEF-D)

24 de junho de 2026 atualizado por: Janssen Research & Development, LLC

Estudo de Fase 2, Multicêntrico, Randomizado, Duplo-cego, Controlado por Placebo com Tratamento Ativo Diferido para Investigar a Eficácia, Segurança e Farmacocinética de JNJ-73763989 + Análogo Nucleos(t)Ide em Participantes Co-Infectados com Hepatite B e Hepatite Vírus D

O objetivo do estudo é avaliar a eficácia do tratamento contra o vírus da hepatite D (HDV) do regime JNJ-73763989 + análogo de nucleos(t)ide (NA) em comparação com NA sozinho.

Visão geral do estudo

Status

Concluído

Condições

Intervenção / Tratamento

Descrição detalhada

JNJ-73763989 é um terapêutico antiviral direcionado ao fígado para injeção subcutânea projetado para tratar a infecção crônica pelo vírus da hepatite B (HBV) por meio do mecanismo de interferência do ácido ribonucleico. Este estudo de fase 2 é projetado para avaliar a segurança e eficácia de JNJ-73763989 em pacientes infectados por HBV que são co-infectados com HDV. O estudo consiste em 2 partes: a Parte 1 avaliará a segurança, tolerabilidade e atividade antiviral de JNJ-73763989 + NA, enquanto a Parte 2 avaliará a segurança e eficácia do regime JNJ-73763989 + NA no tratamento da co-infecção HBV/HDV . Cada parte inclui 3 fases: Fase de triagem (de 4 semanas até no máximo 8 semanas), fase de intervenção (144 semanas para o braço A e 148 semanas para o braço B) e fase de acompanhamento (48 semanas). A duração da participação individual no estudo será entre 196 e 204 semanas. Segurança e tolerabilidade (incluindo eventos adversos [EAs] e EAs graves, avaliações laboratoriais, eletrocardiograma [ECG], sinais vitais, exame físico), eficácia (incluindo ácido ribonucleico [RNA] HDV, ácido desoxirribonucleico [DNA] HBV e antígenos) e a farmacocinética será avaliada ao longo do estudo.

Tipo de estudo

Intervencional

Inscrição (Real)

52

Estágio

  • Fase 2

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

  • Alemanha
      • Essen, Alemanha, 45147
        • Universitätsklinikum Essen
      • Frankfurt, Alemanha, 60590
        • Universitätsklinikum Johann Wolfgang Goethe- Universität Frankfurt Medizinische Klinik 1
      • Hanover, Alemanha, 30625
        • Medizinische Hochschule Hannover
  • Austrália
      • Camperdown, Austrália, 2050
        • Royal Prince Alfred Hospital
      • Footscray, Austrália, 3011
        • Western Health
      • Westmead, Austrália, 2145
        • Westmead Hospital
  • Brasil
      • Boa Vista, Brasil, 69304015
        • Centro Oncológico De Roraima
      • Manaus, Brasil, 69040-000
        • Fundacao De Medicina Tropical Doutor Heitor Vieira Dourado
      • Porto Velho, Brasil, 76812-329
        • Cepem - Centro de Pesquisa Em Medicina Tropical
  • China
      • Beijing, China, 100015
        • Beijing Ditan Hospital Capical Medical University
      • Beijing, China, 100044
        • Peking University People s Hospital
      • Changchun, China, 130021
        • The First Bethune Hospital of Jilin University
      • Chengdu, China, 610041
        • West China Hospital Sichuan University
      • Chongqing, China, 400010
        • The Second Affiliated Hospital of Chongqing Medical University
      • Guangzhou, China, 510515
        • Nanfang Hospital
      • Guangzhou, China, 510000
        • Guangzhou Eighth People's Hospital, Guangzhou Medical University
      • Hangzhou, China, 310003
        • The First Affiliated Hospital Zhejiang University College of Medicine
      • Shanghai, China, 200040
        • Huashan Hospital Fudan University
  • Espanha
      • Barcelona, Espanha, 8028
        • Hosp Clinic de Barcelona
      • Barcelona, Espanha, 8035
        • Hosp Univ Vall D Hebron
      • Madrid, Espanha, 28041
        • Hosp. Univ. 12 de Octubre
      • Santander, Espanha, 39008
        • Hosp. Univ. Marques de Valdecilla
  • Estados Unidos
    • California
      • Redwood City, California, Estados Unidos, 94063
        • Stanford University School of Medicine
    • Massachusetts
      • Boston, Massachusetts, Estados Unidos, 02114
        • Harvard Medical School Massachusetts General Hospital
  • França
      • Clichy, França, 92110
        • Hopital Beaujon
      • Lyon, França, 69004
        • Hôpital de la Croix Rousse
      • Nantes, França, 44093
        • CHU de Nantes hotel Dieu
      • Paris, França, 75012
        • CHU Hopital Saint Antoine
      • Rennes, França, 35033
        • Chu Rennes Hopital Pontchaillou
  • Itália
      • Milan, Itália, 20122
        • Irccs Ospedale Maggiore Di Milano
      • Pisa, Itália, 56124
        • Azienda Ospedaliero Universitaria Pisana
      • Rome, Itália, 00161
        • Universita degli Studi di Roma 'La Sapienza' - Umberto I Policlinico di Roma
      • Torino, Itália, 10126
        • Ospedale Molinette, AO Città della Salute e della Scienza di
  • Japão
      • Bunkyō City, Japão, 113 8519
        • Tokyo Medical and Dental University Hospital
      • Hiroshima, Japão, 730-8619
        • Hiroshima Red Cross Hospital & Atomic-bomb Survivors Hospital
      • Iizuka-shi, Japão, 820-8505
        • National Hospital Organization Shikoku Cancer Center
      • Ikeda, Japão, 563-8510
        • Ikeda City Hospital
      • Kumamoto, Japão, 860-8556
        • Kumamoto University Hospital
      • Kumamoto, Japão, 862 8655
        • Kumamoto Shinto General Hospital
      • Nagasaki, Japão, 852-8501
        • Nagasaki University Hospital
      • Nagasaki, Japão, 856-8562
        • National Hospital Organization Nagasaki Medical Center
      • Nakagami Gun, Japão, 903-0215
        • University of the Ryukyus Hospital
      • Okinawa, Japão, 904-2195
        • Nakagami Hospital
      • Suita, Japão, 564-8567
        • Suita Municipal Hospital
      • Suita-shi, Japão, 565-0871
        • Osaka University Hospital
      • Sumida Ku, Japão, 130 8575
        • Tokyo Metropolitan Bokutoh Hospital
  • Nova Zelândia
      • Auckland, Nova Zelândia, 1010
        • New Zealand Clinical Research
  • Reino Unido
      • London, Reino Unido, SE5 9RF
        • Kings College Hospital
  • Rússia
      • Krasnoyarsk, Rússia, 660049
        • Krasnoyarsk Regional Center For AIDS And Infectious Diseases Treatment And Prophylaxis
      • Saint Petersburg, Rússia, 190103
        • St. Petersburg City Center for AIDS and Infectious Diseases Treatment and Prophylaxis
      • Samara, Rússia, 443045
        • Medical Company Hepatolog Ltd
  • Suécia
      • Danderyd, Suécia, 18288
        • Danderyds Sjukhus
      • Malmö, Suécia, 20502
        • Skanes universitetssjukhus
      • Stockholm, Suécia, 14186
        • Karolinska Universitetssjukhuset Huddinge
  • Taiwan
      • Kaohsiung City, Taiwan, 80756
        • Kaohsiung Medical University Chung Ho Memorial Hospital
      • Taipei, Taiwan, 10002
        • National Taiwan University Hospital
      • Tiachung, Taiwan
        • China Medical University Hospital
  • Turquia (Türkiye)
      • Istanbul, Turquia (Türkiye), 34098
        • Istanbul University Cerrahpasa Medical Faculty
      • Izmir, Turquia (Türkiye), 35100
        • Ege University Medical of Faculty, Department of Gastroenterology
      • Kocaeli, Turquia (Türkiye), 41001
        • Kocaeli University Medical Faculty
      • Trabzon, Turquia (Türkiye), 61080
        • Karadeniz Teknik University Medical Faculty

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos a 65 anos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Descrição

Critério de inclusão:

  • Medicamente estável com base no exame físico, histórico médico, sinais vitais, eletrocardiograma (ECG) na triagem
  • Coinfecção crônica pelo vírus da hepatite B (HBV) e vírus da hepatite D (HDV) com documentação de pelo menos 6 meses antes da triagem
  • Para a Parte 1: ARN da hepatite D (ARN do HDV) superior ou igual a (>=) 1000 unidades internacionais por mililitro (UI/mL) no rastreio. Para a Parte 2: deve ter valores de HDV RNA >= 500 UI/mL e deve ter valores de antígeno de superfície da hepatite B (HBsAg) menores ou iguais a (
  • Alanina aminotransferase (ALT) maior que o limite superior normal (LSN), mas menor que 10 vezes (LSN)
  • Índice de massa corporal (IMC) entre 18,0 e 35,0 quilogramas por metro quadrado (kg/m^2), extremos incluídos
  • Medidas contraceptivas altamente eficazes em vigor para participantes do sexo feminino com potencial para engravidar ou participantes do sexo masculino com parceiras com potencial para engravidar
  • Participantes não cirróticos e participantes com cirrose compensada (Child Pugh classe A) na triagem (Parte 1) e os participantes devem ter ausência de cirrose e contagem de plaquetas >= 140.000 por decilitro (dL) para inscrição na Parte-2

Critério de exclusão:

  • Evidência de infecção pelos vírus da hepatite A, C ou E ou evidência de imunodeficiência humana, vírus tipo 1 (HIV-1) ou infecção por HIV-2 na triagem
  • Histórico ou evidência de sinais/sintomas clínicos de descompensação hepática, incluindo, entre outros: hipertensão portal, ascite, encefalopatia hepática, varizes esofágicas ou quaisquer anormalidades laboratoriais indicando função hepática reduzida conforme definido no protocolo
  • Evidência de doença hepática de etiologia não HBV/HDV
  • Sinais de carcinoma hepatocelular (CHC)
  • Anormalidades laboratoriais significativas, conforme definido no protocolo na triagem
  • Participantes com histórico de malignidade dentro de 5 anos antes da triagem
  • Ritmo sinusal anormal ou parâmetros de ECG na triagem, conforme definido no protocolo
  • História ou arritmia cardíaca atual ou história ou evidência clínica de doença cardíaca significativa ou instável
  • Participantes com qualquer doença atual ou anterior para a qual, na opinião do investigador e/ou patrocinador, a participação não seria do melhor interesse do participante
  • História ou doença de pele clinicamente significativa atual ou erupção cutânea
  • Participantes com alergias conhecidas, hipersensibilidade ou intolerância ao JNJ-3989 ou seus excipientes ou excipientes do conteúdo do placebo
  • Contra-indicações para o uso de entecavir (ETV), tenofovir disoproxil ou tenofovir alafenamida (TAF) de acordo com as informações de prescrição locais
  • Participantes que tomaram quaisquer terapias proibidas pelo protocolo
  • Participantes do sexo feminino que estão grávidas, amamentando ou planejando engravidar enquanto inscritas neste estudo ou dentro de 90 dias após a última dose da intervenção do estudo
  • Participantes do sexo masculino que planejam ter um filho enquanto estão matriculados
  • Participantes que tiveram ou planejaram uma cirurgia de grande porte (por exemplo, requerendo anestesia geral) ou que receberam um transplante de órgão
  • Participantes vulneráveis ​​(exemplo, indivíduos encarcerados, indivíduos sob medida de proteção legal)

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: Randomizado
  • Modelo Intervencional: Atribuição Paralela
  • Mascaramento: Dobro

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: Braço de tratamento ativo imediato: JNJ-73763989 + NA
Os participantes receberão injeção subcutânea (SC) JNJ-73763989 a cada 4 semanas (Q4W) junto com NA (entecavir [ETV], tenofovir disoproxil ou tenofovir alafenamida [TAF]) uma vez ao dia durante 144 semanas na Parte 1 e por pelo menos 96 semanas na Parte 2.
Medicamento: Tenofovir disoproxil
Tenofovir disoproxil comprimido revestido por película será administrado por via oral.
Medicamento: JNJ-73763989
JNJ-73763989 será administrado como uma injeção SC.
Outros nomes:
  • JNJ-3989
Medicamento: Entecavir (ETV) monohidratado
O comprimido revestido por película de monohidrato de ETV será administrado por via oral.
Medicamento: Tenofovir alafenamida (TAF)
O comprimido revestido por película de TAF será administrado por via oral.
Comparador de Placebo: Braço de tratamento ativo diferido: Placebo+NA+JNJ-73763989+NA
Os participantes receberão placebo correspondente à injeção SC de JNJ-73763989 Q4W junto com NA (ETV, tenofovir disoproxil ou TAF) uma vez ao dia por 52 semanas seguido por injeção SC de JNJ-73763989 Q4W junto com NA uma vez ao dia durante 96 semanas na Parte 1 e por pelo menos 48 semanas na Parte 2.
Medicamento: Tenofovir disoproxil
Tenofovir disoproxil comprimido revestido por película será administrado por via oral.
Medicamento: JNJ-73763989
JNJ-73763989 será administrado como uma injeção SC.
Outros nomes:
  • JNJ-3989
Medicamento: Entecavir (ETV) monohidratado
O comprimido revestido por película de monohidrato de ETV será administrado por via oral.
Medicamento: Tenofovir alafenamida (TAF)
O comprimido revestido por película de TAF será administrado por via oral.
Medicamento: Placebo
O placebo correspondente ao JNJ-73763989 será administrado como uma injeção SC.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
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)
Prazo: Week 48
Percentage of participants with hepatitis D virus (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. 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.
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 Normal ALT at Week 48 (Multiple Imputation Approach)
Prazo: Week 48
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.
Week 48

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Parts 1 and 2: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline or HDV RNA < Lower Limits of Quantification (LLOQ) at Week 48
Prazo: Week 48
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline or HDV RNA < LLOQ at Week 48 was reported. 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.
Week 48
Parts 1 and 2: Percentage of Participants With Normal ALT at Week 48
Prazo: Week 48
Percentage of participants with normal ALT at Week 48 was reported. Normal ALT is defined as ALT <ULN with ULN = 34 U/L for female and 43 U/L for male. The multiple imputation approach was derived using a longitudinal multiple regression model to impute missing data.
Week 48
Parts 1 and 2: Percentage of Participants With Hepatitis B Surface Antigen (HBsAg) Seroclearance at Week 48
Prazo: Week 48
Percentage of participants with HBsAg seroclearance at Week 48 was reported. HBsAg seroclearance was defined as HBsAg negativity (quantitative HBsAg level <LLOQ) based on the assay used.
Week 48
Parts 1 and 2: Percentage of Participants With >=2 Kilopascal (kPa) Reduction From Baseline in Liver Stiffness Measurement (LSM) Assessed by Vibration-controlled Transient Elastography (VCTE) (FibroScan) at Week 48
Prazo: Week 48
Percentage of participants with >=2 kPa reduction from baseline in LSM assessed by VCTE (fibroscan) at Week 48 was reported. 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.
Week 48
Part 1: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline or HDV RNA TND in Combination With Normal ALT
Prazo: Week 48, FU Week 24
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline or HDV RNA TND in combination with normal ALT was reported. TND was defined as no traces of HBV RNA were detected/found. Normal ALT is 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.
Week 48, FU Week 24
Part 2: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline or HDV RNA TND in Combination With Normal ALT
Prazo: Week 48, FU Week 24
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline or HDV RNA TND in combination with normal ALT was reported. TND was defined as no traces of HBV RNA were detected/found. Normal ALT is 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.
Week 48, FU Week 24
Part 1: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline in Combination With Normal ALT
Prazo: Week 48 and FU Week 24
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline in combination with normal ALT was reported. Normal ALT is 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.
Week 48 and FU Week 24
Part 2: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline in Combination With Normal ALT
Prazo: Week 48 and FU Week 24
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline in combination with normal ALT was reported. Normal ALT is 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.
Week 48 and FU Week 24
Part 1: Percentage of Participants With HDV RNA TND in Combination With Normal ALT
Prazo: Week 48 and FU Week 24
Percentage of participants with HDV RNA TND in combination with normal ALT was reported. Normal ALT is defined as ALT <ULN with ULN = 34 U/L for female and 43 U/L for male. TND was defined as no traces of HBV RNA were detected/found. The multiple imputation approach was derived using a longitudinal multiple regression model to impute missing data.
Week 48 and FU Week 24
Part 2: Percentage of Participants With HDV RNA TND in Combination With Normal ALT
Prazo: Week 48 and FU Week 24
Percentage of participants with HDV RNA TND in combination with normal ALT 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 multiple imputation approach was derived using a longitudinal multiple regression model to impute missing data.
Week 48 and FU Week 24
Part 1: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline or HDV RNA TND
Prazo: Week 48 and FU Week 24
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline or HDV RNA TND was reported. TND was defined as no traces of HBV RNA were detected/found. 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.
Week 48 and FU Week 24
Part 2: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline or HDV RNA TND
Prazo: Week 48 and FU Week 24
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline or HDV RNA TND was reported. TND was defined as no traces of HBV RNA were detected/found. 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.
Week 48 and FU Week 24
Part 1: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline
Prazo: Week 48 and FU Week 24
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline was reported. 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.
Week 48 and FU Week 24
Part 2: Percentage of Participants With HDV RNA >=2 log10 IU/mL Decline From Baseline
Prazo: Week 48 and FU Week 24
Percentage of participants with HDV RNA >=2 log10 IU/mL decline from baseline was reported. 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.
Week 48 and FU Week 24
Part 1: Percentage of Participants With HDV RNA TND
Prazo: Week 48, FU Week 24
Percentage of participants with HDV RNA TND was reported. TND was defined as no traces of HBV RNA were detected/found.
Week 48, FU Week 24
Part 2: Percentage of Participants With HDV RNA TND
Prazo: Week 48, FU Week 24
Percentage of participants with HDV RNA TND was reported. TND was defined as no traces of HBV RNA were detected/found.
Week 48, FU Week 24
Part 1: Percentage of Participants With Normal ALT
Prazo: FU Week 24
Percentage of participants with Normal ALT was reported. Normal ALT was defined as ALT <ULN with ULN = 34 U/L for female and 43 U/L for male.
FU Week 24
Part 2: Percentage of Participants With Normal ALT
Prazo: FU Week 24
Percentage of participants with Normal ALT was reported. Normal ALT was defined as ALT <ULN with ULN = 34 U/L for female and 43 U/L for male.
FU Week 24
Parts 1 and 2: Time to Reach HDV RNA >=2 log10 IU/mL Decline From Baseline or HDV RNA TND
Prazo: Placebo + NA: From Day 1 up to Week 196; JNJ-3989 + NA: From Day 1 up to Week 192
Time to reach HDV RNA >=2 log10 IU/mL decline from baseline or HDV RNA TND was planned to be reported. It is defined as the number of days between the date of first study intervention intake and the date of the first occurrence of HDV RNA >= 2 log10 IU/mL decline or HDV RNA TND, whichever event is first (that is, minute [the date of the first HDV RNA >= 2 log10 IU/mL decline, date of the first time HDV RNA is TND] - the date of first study intervention intake + 1). TND was defined as no traces of HBV RNA were detected/found. The multiple imputation approach was derived using a longitudinal multiple regression model to impute missing data.
Placebo + NA: From Day 1 up to Week 196; JNJ-3989 + NA: From Day 1 up to Week 192
Part 1: Change From Baseline in HDV RNA
Prazo: Baseline (Day 1), Week 48
Change from baseline in HDV RNA was reported. 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.
Baseline (Day 1), Week 48
Part 2: Change From Baseline in HDV RNA
Prazo: Baseline (Day 1), Week 48
Change from baseline in HDV RNA was reported. 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.
Baseline (Day 1), Week 48
Part 1: Change From Baseline in ALT
Prazo: Baseline (Day 1), Week 48, FU Week 24
Change from baseline in ALT was reported. 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.
Baseline (Day 1), Week 48, FU Week 24
Part 2: Change From Baseline in ALT
Prazo: Baseline (Day 1), Week 48, FU Week 44
Change from baseline in ALT was reported. 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.
Baseline (Day 1), Week 48, FU Week 44
Parts 1 and 2: Percentage of Participants With Treatment-emergent Adverse Events (TEAEs)
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Percentage of participants with TEAEs was reported. An adverse event (AE) was any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the study intervention. TEAE were all AEs with a start date on or after the first administration of study treatment or any ongoing event that worsens in severity, intensity or frequency after the first administration of study treatment.
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Parts 1 and 2: Percentage of Participants With Treatment-emergent Serious Adverse Events (TESAEs)
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Percentage of participants with TESAEs was reported. SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. TESAE were all SAEs with a start date on or after the first administration of study treatment or any ongoing event that worsens in severity, intensity or frequency after the first administration of study treatment.
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Parts 1 and 2: Percentage of Participants With Worst Treatment-emergent Abnormalities in Clinical Laboratory Tests: Chemistry
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Percentage of participants with worst treatment-emergent abnormalities in clinical laboratory tests: chemistry was reported. Laboratory abnormalities were graded according to the Division of Acquired Immunodeficiency Syndrome (DAIDS) criteria as follows: Grade 1 - Mild, Grade 2 - Moderate, Grade 3 - Severe, and Grade 4 - Potentially life threatening. Only Grade 3 and Grade 4 abnormalities were considered worst and are reported. Only those laboratory parameters for which at least one participant had an abnormality are reported in this outcome measure. ALT: Alanine Aminotransferase; AST: Aspartate Aminotransferase; SGPT: serum glutamic pyruvic transaminase; SGOT: serum glutamic-oxaloacetic transaminase.
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Parts 1 and 2: Percentage of Participants With Worst Treatment-emergent Abnormalities in Clinical Laboratory Tests: Hematology
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52
Percentage of participants with worst treatment-emergent abnormalities in clinical laboratory tests: hematology was reported. Laboratory abnormalities were graded according to the DAIDS criteria as follows: Grade 1 - Mild, Grade 2 - Moderate, Grade 3 - Severe, and Grade 4 - Potentially life threatening. Only Grade 3 and Grade 4 abnormalities were considered worst and are reported. Only those laboratory parameters for which at least one participant had an abnormality are reported in this outcome measure.
Placebo + NA: DB Phase: Week 0 up to Week 52; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52
Parts 1 and 2: Percentage of Participants With Worst Treatment-emergent Abnormalities in Clinical Laboratory Tests: Urinalysis
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Percentage of participants with worst treatment-emergent abnormalities in clinical laboratory tests: urinalysis was reported. Urinalysis included parameters: Glycosuria, Hematuria, and Proteinuria. Laboratory abnormalities were graded according to the DAIDS criteria as follows: Grade 1 - Mild, Grade 2 - Moderate, Grade 3 - Severe, and Grade 4 - Potentially life threatening. Only Grade 3 and Grade 4 abnormalities were considered worst and are reported.
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Parts 1 and 2: Percentage of Participants With Worst Treatment-emergent Abnormalities in Clinical Laboratory Tests: Urine Chemistry
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Percentage of participants with worst treatment-emergent abnormalities in clinical laboratory tests: urine chemistry was reported. Laboratory abnormalities were graded according to the DAIDS criteria as follows: Grade 1 - Mild, Grade 2 - Moderate, Grade 3 - Severe, and Grade 4 - Potentially life threatening. Only Grade 3 and Grade 4 abnormalities were considered worst and are reported.
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Parts 1 and 2: Percentage of Participants With Worst Treatment-emergent Abnormalities in Clinical Laboratory Tests: Renal Biomarkers
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Percentage of participants with worst treatment-emergent abnormalities in clinical laboratory tests: renal biomarkers was reported. Laboratory abnormalities were graded according to the DAIDS criteria as follows: Grade 1 - Mild, Grade 2 - Moderate, Grade 3 - Severe, and Grade 4 - Potentially life threatening. Only Grade 3 and Grade 4 abnormalities were considered worst and are reported.
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Parts 1 and 2: Percentage of Participants With Worst Treatment-emergent Abnormalities in 12-Lead Electrocardiogram
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Percentage of participants with worst treatment-emergent abnormalities in 12-Lead Electrocardiogram was reported. Only those parameters were reported where at least one participant had abnormality. Worst ECG abnormalities were determined based on investigator's discretion. bpm: beats per minute; ms: milliseconds; QTcF: QT interval corrected for heart rate according to Fridericia; QTc: Corrected QT Interval.
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Parts 1 and 2: Percentage of Participants With Worst Treatment-emergent Abnormalities in Vital Signs
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144
Percentage of participants with worst treatment-emergent abnormalities in vital signs (pulse rate, supine systolic blood pressure). Vital signs abnormalities were graded according to the DAIDS criteria as follows: Grade 1 - Mild, Grade 2 - Moderate, Grade 3 - Severe, and Grade 4 - Potentially life threatening. Only Grade 3 and Grade 4 abnormalities were considered worst and are reported. Only those laboratory parameters for which at least one participant had an abnormality are reported in this outcome measure. Only those parameters were reported where at least one participant had abnormality. Abn: abnormal
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144
Parts 1 and 2: Percentage of Participants With Clinically Significant Abnormalities in Physical Examination
Prazo: Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Percentage of participants with clinically significant abnormalities in physical examination was reported. Vital signs abnormalities were graded according to the DAIDS criteria as follows: Grade 1 - Mild, Grade 2 - Moderate, Grade 3 - Severe, and Grade 4 - Potentially life threatening.
Placebo + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 148, FUP Phase: Week 148 up to Week 196; JNJ-3989 + NA: DB Phase: Week 0 up to Week 52, OL Phase: Week 52 up to Week 144; FUP Phase: Week 144 up to Week 192
Parts 1 and 2: Percentage of Participants With Hepatitis B Surface Antigen (HBsAg) Seroclearance
Prazo: Week 48, FU Week 24
Percentage of participants with HBsAg seroclearance was reported. HBsAg seroclearance is defined as the quantitative HBsAg < LLOQ.
Week 48, FU Week 24
Part 1: Change From Baseline Over Time in HBsAg
Prazo: Baseline (Day 1), Week 48, FU Week 24
Change from baseline over time in HBsAg was reported. 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.
Baseline (Day 1), Week 48, FU Week 24
Part 2: Change From Baseline Over Time in HBsAg
Prazo: Baseline (Day 1), Week 48, FU Week 24
Change from baseline over time in HBsAg was reported. 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.
Baseline (Day 1), Week 48, FU Week 24
Part 1: Change From Baseline Over Time in Hepatitis B Virus e Antigen (HBeAg)
Prazo: Baseline (Day 1), Week 48, FU Week 24
Change from baseline over time in HBeAg was reported. 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.
Baseline (Day 1), Week 48, FU Week 24
Part 2: Change From Baseline Over Time in HBeAg
Prazo: Baseline (Day 1), Week 48, FU Week 24
Change from baseline over time in HBeAg was reported. 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.
Baseline (Day 1), Week 48, FU Week 24
Part 1: Change From Baseline Over Time in Hepatitis B Virus (HBV) Deoxyribonucleic Acid (DNA)
Prazo: Baseline (Day 1), Weeks 48 , 136, EOS (FU Week 48)
Change from baseline over time in HBV DNA was reported. 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.
Baseline (Day 1), Weeks 48 , 136, EOS (FU Week 48)
Part 2: Change From Baseline Over Time in HBV DNA
Prazo: Baseline (Day 1), Weeks 48, 112, EOS (FU Week 48)
Change from baseline over time in HBV DNA was reported. 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.
Baseline (Day 1), Weeks 48, 112, EOS (FU Week 48)
Part 1: Percentage of Participants With HBsAg Levels Below/Above Different Cut-offs
Prazo: Week 48, FU Week 24
Percentage of participants with HBsAg levels below/above different cut-offs was reported. HBsAg values (IU/mL) were <1,000, <100, <10, <1, and <0.05 IU/mL (i.e, <LLOQ). LLOQ value is 0.05 IU/mL.
Week 48, FU Week 24
Part 2: Percentage of Participants With HBsAg Levels Below/Above Different Cut-offs
Prazo: Week 48, FU Week 24
Percentage of participants with HBsAg levels below/above different cut-offs was reported. HBsAg values (IU/mL) were <1,000, <100, <10, <1, and <0.05 IU/mL (i.e, <LLOQ). LLOQ value is 0.05 IU/mL.
Week 48, FU Week 24
Part 1: Percentage of Participants With HBeAg Levels Below/Above Different Cut-offs
Prazo: Week 48, FU Week 24
Percentage of participants with HBeAg levels below/above different cut-offs was reported. Cut-offs were >= 0.5 log10 IU/mL, >= 1.0 log10 IU/mL, >= 2.0 log10 IU/mL, and >= 3.0 log10 IU/mL.
Week 48, FU Week 24
Part 2: Percentage of Participants With HBeAg Levels Below/Above Different Cut-offs
Prazo: Week 48, FU Week 24
Percentage of participants with HBeAg levels below/above different cut-offs was reported. Cut-offs were >= 0.5 log10 IU/mL, >= 1.0 log10 IU/mL, >= 2.0 log10 IU/mL, and >= 3.0 log10 IU/mL.
Week 48, FU Week 24
Part 1: Percentage of Participants With HBV DNA Levels Below/Above Different Cut-offs
Prazo: Week 48, FU Week 24
Percentage of participants with HBV DNA levels below/above different cut-offs (<LLOQ and <2000 IU/mL) was reported. For HBV DNA, LLOQ is 20 IU/mL.
Week 48, FU Week 24
Part 2: Percentage of Participants With HBV DNA Levels Below/Above Different Cut-offs
Prazo: Week 48, FU Week 24
Percentage of participants with HBV DNA levels below/above different cut-offs (<LLOQ and <2000 IU/mL). For HBV DNA, LLOQ is 20 IU/mL
Week 48, FU Week 24
Part 1: Time to Reach HBsAg <1 IU/mL Based on Kaplan-Meier Estimate
Prazo: Placebo + NA: From baseline up to Week 196; JNJ-3989 + NA: From baseline up to Week 192
Time to reach HBsAg <1 IU/mL based on Kaplan-Meier estimate was reported. Time to first occurrence of the HBsAg <1 IU/mL is defined as the number of days between the date of first study intervention intake and the date of the first occurrence of the HBsAg <1 IU/mL. 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.
Placebo + NA: From baseline up to Week 196; JNJ-3989 + NA: From baseline up to Week 192
Part 2: Time to Reach HBsAg <1 IU/mL Based on Kaplan-Meier Estimate
Prazo: Placebo + NA: From baseline up to Week 196; JNJ-3989 + NA: From baseline up to Week 192
Time to reach HBsAg <1 IU/mL based on Kaplan-Meier estimate was reported. Time to first occurrence of the HBsAg <1 IU/mL is defined as the number of days between the date of first study intervention intake and the date of the first occurrence of the HBsAg <1 IU/mL. 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.
Placebo + NA: From baseline up to Week 196; JNJ-3989 + NA: From baseline up to Week 192
Part 1: Percentage of Participants With HBV DNA Virologic Breakthrough
Prazo: Week 48, FU Week 24
Percentage of participants with HBV DNA virologic breakthrough was reported. Virologic Breakthrough was defined as confirmed on-treatment HBV DNA increase by >1 log10 IU/mL from nadir or confirmed on-treatment HBV DNA level >200 IU/mL in participants who had HBV DNA level <LLOQ of the HBV DNA assay.
Week 48, FU Week 24
Part 2: Percentage of Participants With HBV DNA Virologic Breakthrough
Prazo: Week 48, FU Week 24
Percentage of participants with HBV DNA virologic breakthrough was reported. Virologic Breakthrough was defined as confirmed on-treatment HBV DNA increase by >1 log10 IU/mL from nadir or confirmed on-treatment HBV DNA level >200 IU/mL in participants who had HBV DNA level <LLOQ of the HBV DNA assay.
Week 48, FU Week 24
Parts 1 and 2: Maximum Plasma Concentration (Cmax) of JNJ-3976
Prazo: Weeks 4, 8, and 16
Maximum plasma concentration (Cmax) of JNJ-3976 were reported. Participant wise data is reported as n<3.
Weeks 4, 8, and 16
Parts 1 and 2: Maximum Plasma Concentration (Cmax) of JNJ-3924
Prazo: Weeks 4, 8, and 16
Maximum plasma concentration (Cmax) of JNJ-3924 was reported. Participant wise data is reported as n<3.
Weeks 4, 8, and 16
Parts 1 and 2: Area Under the Plasma Concentration-time Curve From Time 0 to 24 Hours (AUC[0-24h]) of JNJ-3976
Prazo: Predose up to 24 hours post dose on Weeks 4, 8, and 16
Area under the plasma concentration-time curve from time 0 to 24 hours (AUC[0-24h]) of JNJ-3976 were reported. Participant wise data is reported as n<3.
Predose up to 24 hours post dose on Weeks 4, 8, and 16
Parts 1 and 2: Area Under the Plasma Concentration-time Curve From Time 0 to 24 Hours (AUC[0-24h]) of JNJ-3924
Prazo: Predose up to 24 hours post dose on Weeks 4, 8, and 16
Area under the plasma concentration-time curve from time 0 to 24 hours (AUC[0-24h]) of JNJ-3924 were reported. Participant wise data is reported as n<3.
Predose up to 24 hours post dose on Weeks 4, 8, and 16
Parts 1 and 2: Area Under the Plasma Concentration-time Curve From Time 0 to Last Quantifiable Time (AUC[0-last]) of JNJ-3976
Prazo: Weeks 4, 8, and 16
Area under the plasma concentration-time curve from time 0 to Last Quantifiable Time (AUC[0-last]) of JNJ-3976 were reported. Participant wise data is reported as n<3.
Weeks 4, 8, and 16
Parts 1 and 2: Area Under the Plasma Concentration-time Curve From Time 0 to Last Quantifiable Time (AUC[0-last]) of JNJ-3924
Prazo: Weeks 4, 8, and 16
Area under the plasma concentration-time curve from time 0 to Last Quantifiable Time (AUC[0-last]) of JNJ-3924 were reported. Participant wise data is reported as n<3.
Weeks 4, 8, and 16
Part 1: Percentage of Participants With >=2 Kilopascals (kPa) Reduction From Baseline in Liver Stiffness Measurement (LSM) Assessed by Vibration-controlled Transient Elastography (VCTE; FibroScan)
Prazo: Baseline, EOS (FU Week 48)
Percentage of participants with >=2 kPa reduction from baseline >=2 kPa in liver stiffness measurement (LSM) assessed by VCTE (fibroScan) was reported. 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.
Baseline, EOS (FU Week 48)
Part 2: Percentage of Participants With >=2 kPa Reduction From Baseline in Liver Stiffness Measurement (LSM) Assessed by VCTE (FibroScan)
Prazo: Baseline, EOS (FU Week 48)
Percentage of participants with >=2 kPa reduction from baseline in liver stiffness measurement (LSM) assessed by VCTE (FibroScan) was reported. 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.
Baseline, EOS (FU Week 48)
Part 1: Change From Baseline in LSM Over Time Assessed by VCTE (FibroScan)
Prazo: Baseline, Week 48, FU Week 24
Change from baseline in LSM over time assessed by VCTE (FibroScan) was reported. 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.
Baseline, Week 48, FU Week 24
Part 2: Change From Baseline in LSM Over Time Assessed by VCTE (FibroScan)
Prazo: Baseline, Week 48, FU Week 24
Change from baseline in LSM over time assessed by VCTE (FibroScan) was reported. 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.
Baseline, Week 48, FU Week 24
Part 1: Percentage of Participants With Sustained HDV Response Off-treatment Post End of JNJ-3989 Treatment
Prazo: JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Percentage of participants with sustained HDV response Off-treatment post end of JNJ-3989 treatment was reported. A JNJ-3989 off-treatment sustained HDV response is defined by having HDV RNA TND during the FU phase after stopping JNJ-3989 regardless of continuing NA treatment.
JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Part 2: Percentage of Participants With Sustained HDV Response Off-treatment Post End of JNJ-3989 Treatment
Prazo: JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Percentage of participants with sustained HDV response Off-treatment post end of JNJ-3989 treatment was reported. A JNJ-3989 off-treatment sustained HDV response is defined by having HDV RNA TND during the FU phase after stopping JNJ-3989 regardless of continuing NA treatment.
JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Part 1: Percentage of Participants With HDV Relapse Post End of JNJ-3989 Treatment
Prazo: JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Percentage of participants with HDV relapse post end of JNJ-3989 treatment was reported. Off-treatment HDV relapse is defined as: 1. In participants with HDV RNA <LLOQ (i.e., 630 IU/ml) at EOT: Confirmed increase in HDV RNA of > 1 log10 IU/mL above the LLOQ JNJ-3989 off-treatment. 2. In participants with HDV RNA >LLOQ at EOT: Confirmed increase in HDV RNA of > 1 log10 IU/mL from EOT HDV RNA value JNJ-3989 off-treatment.
JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Part 2: Percentage of Participants With HDV Relapse Post End of JNJ-3989 Treatment
Prazo: JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Percentage of participants with HDV relapse post end of JNJ-3989 treatment was reported. Off-treatment HDV relapse is defined as: 1. In participants with HDV RNA <LLOQ (i.e., 630 IU/ml) at EOT: Confirmed increase in HDV RNA of > 1 log10 IU/mL above the LLOQ JNJ-3989 off-treatment. 2. In participants with HDV RNA >LLOQ at EOT: Confirmed increase in HDV RNA of > 1 log10 IU/mL from EOT HDV RNA value JNJ-3989 off-treatment.
JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Parts 1 and 2: Percentage of Participants With Sustained HBV Response Off-treatment Post End of JNJ-3989 Treatment
Prazo: JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Percentage of participants with sustained HBV response off-treatment post end of JNJ-3989 treatment was reported.
JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Part 1: Percentage of Participants With HBV Flare (Virologic, Biochemical, and Clinical) Post End of Treatment
Prazo: JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Percentage of participants with HBV flare (Virologic, biochemical, and clinical) post end of treatment was reported. Off-treatment is defined as the time period as the periods when the participants do not receive any of the study interventions (JNJ-3989/placebo and NA). Virologic flare is for participants who are off-treatment and had HBV DNA < LLOQ at the last observed point on all study treatments, and categorized based on the confirmed (i.e., two consecutive values) peak HBV DNA above any of the three thresholds: 20000 IU/mL, 2000 IU/mL and 200 IU/mL. Biochemical HBV flare is defined as a confirmed ALT and/or AST>=3*ULN and >=3* nadir (i.e. lowest value observed up to the time point of meeting the biochemical flare criteria). An HBV clinical flare occurs either when an HBV virologic flare and off-treatment HBV biochemical flare overlap in time or when a HBV biochemical flare starts within 4 weeks following the end of an HBV virologic flare.
JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Part 2: Percentage of Participants With HBV Flare (Virologic, Biochemical, and Clinical) Post End of Treatment
Prazo: JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48
Percentage of participants with HBV flare (Virologic, biochemical, and clinical) post end of treatment was reported was reported. Off-treatment is defined as the time period as the periods when the participants do not receive any of the study interventions (JNJ-3989/placebo and NA). Virologic flare (Derivation 1) is for participants who are off-treatment and had HBV DNA < LLOQ at the last observed point on all study treatments, and categorized based on the confirmed (i.e., two consecutive values) peak HBV DNA above any of the three thresholds: 20000 IU/mL, 2000 IU/mL and 200 IU/mL. Biochemical HBV flare is defined as a confirmed ALT and/or AST>=3*ULN and >=3* nadir (i.e. lowest value observed up to the time point of meeting the biochemical flare criteria). An HBV clinical flare occurs either when an HBV virologic flare and off-treatment HBV biochemical flare overlap in time or when a HBV biochemical flare starts within 4 weeks following the end of an HBV virologic flare.
JNJ-73763989 (JNJ-3989) + Nucleos(t)Ide Analog (NA): Post end of treatment (Week 144) up to FU Week 48; Placebo + NA: Post end of treatment (Week 148) up to FU Week 48

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Janssen Research & Development, LLC

Investigadores

  • Diretor de estudo: Janssen Research & Development, LLC Clinical Trial, Janssen Research & Development, LLC

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

17 de setembro de 2020

Conclusão Primária (Real)

19 de outubro de 2023

Conclusão do estudo (Real)

5 de março de 2025

Datas de inscrição no estudo

Enviado pela primeira vez

28 de agosto de 2020

Enviado pela primeira vez que atendeu aos critérios de CQ

1 de setembro de 2020

Primeira postagem (Real)

2 de setembro de 2020

Atualizações de registro de estudo

Última Atualização Postada (Real)

22 de julho de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

24 de junho de 2026

Última verificação

1 de junho de 2026

Mais Informações

Termos relacionados a este estudo

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • CR108868
  • 2020-001249-37 (Número EudraCT)
  • 73763989HPB2004 (Outro identificador: Janssen Research & Development, LLC)
  • 2023-506763-33-00 (Identificador de registro: EUCT number)

Plano para dados de participantes individuais (IPD)

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Descrição do plano IPD

A política de compartilhamento de dados da Janssen Pharmaceutical Companies of Johnson & Johnson está disponível em www.janssen.com/clinical-trials/transparency.

Conforme observado neste site, as solicitações de acesso aos dados do estudo podem ser enviadas por meio do site do Projeto Yale Open Data Access (YODA) em yoda.yale.edu

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Sim

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

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