AzTrials
AzTrials

Chronic Hepatitis BPhase 2NCT03180619

Study to Evaluate the Safety and Efficacy of Switching to Tenofovir Alafenamide (TAF) From Tenofovir Disoproxil Fumarate (TDF) and/or Other Oral Antiviral Treatment (OAV)

A Phase 2 study testing TAF in people with Chronic Hepatitis B, run by Gilead Sciences at 30 sites in 8 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

The primary objective of this study is to evaluate the safety and tolerability and virologic response of tenofovir alafenamide (TAF) in virologically suppressed chronic hepatitis B participants with renal and/or hepatic impairment. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Chronic Hepatitis B
What is being tested?
TAF
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
124 participants
Where
30 sitesin 8 countries
Study dates
29 Jun 2017to 4 Sep 2020
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • All Participants (Parts A and B):
  • Adult male or non-pregnant female individuals
  • Documented evidence of chronic HBV infection
  • Alanine aminotransferase (ALT) ≤ 10 × upper limit of normal (ULN)
  • Part A Only (renal impairment):
  • Maintained on TDF and/or other OAV treatment(s) for CHB for at least 48 weeks and with viral suppression (HBV deoxyribonucleic acid [DNA] < lower limit of quantitation [LLOQ]) for ≥ 6 months prior to screening
Show all 16Show fewer
  • All individuals must have HBV DNA < 20 International units per milliliter (IU/mL) at screening by central laboratory
  • Both Hepatitis B e-Antigen (HBeAg) positive and negative individuals are eligible to participate
  • Moderate renal impairment (30 milliliters per minute [mL/min] ≤ estimated glomerular filtration rate by the cockcroft-gault formula [eGFRcg] ≤ 59 mL/min), severe renal impairment (15 mL/min ≤ eGFRcg < 30 mL/min) or end stage renal disease (ESRD) (eGFR < 15 mL/min) maintained on hemodialysis (HD)
  • Stable renal function (for participants with moderate or severe impairment): serum creatinine measured at least once within three months prior to screening. The measurement difference between the value measured within three months prior to screening versus the screening value must be ≤ 25% of the screening value
  • Part B Only (hepatic impairment):
  • Maintained on TDF and/or other OAV(s) for CHB for at least 48 weeks and with viral suppression (HBV DNA < LLOQ) for ≥ 6 months prior to screening
  • All individuals must have HBV DNA < 20 IU/mL at screening by central laboratory
  • Both HBeAg positive and negative individuals are eligible to participate
  • Child-pugh-turcotte (CPT) score of 7-12 (inclusive) OR a past history of CPT score ≥ 7 and any CPT score ≤ 12 at screening
  • eGFRCG ≥ 30 mL/min using the Cockcroft-Gault equation

Who cannot join

  • All Individuals (Parts A \& B):
  • Women who are breastfeeding or who believe they may wish to become pregnant during the course of the study
  • 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 (HCV), human immunodeficiency virus (HIV), or hepatitis D virus (HDV)
  • Prior Interferon (IFN) use within 6 months of screening
  • Evidence of hepatocellular carcinoma
Show all 34Show fewer
  • Received solid organ or bone marrow transplant
  • Significant cardiovascular, pulmonary, or neurological disease
  • Malignancy within 5 years prior to screening, with the exception of specific cancers that are cured by surgical resection (basal cell skin cancer, etc.). Individuals under evaluation for possible malignancy are not eligible
  • Currently receiving therapy with immunomodulators (e.g. corticosteroids), nephrotoxic agents, or agents capable of modifying renal excretion
  • Known hypersensitivity to study drugs, metabolites, or formulation excipients
  • Current alcohol or substance abuse judged by the investigator to potentially interfere with individual's compliance
  • Any other clinical condition or prior therapy that, in the opinion of the Investigator, would make the individual unsuitable for the study or unable to comply with dosing requirements.
  • Part A Only (Renal Impairment):
  • Current or historical evidence of clinical hepatic decompensation (e.g., ascites, encephalopathy or variceal hemorrhage)
  • Abnormal hematological and biochemical parameters, including:
  • Hemoglobin < 9 grams per deciliter (g/dL)
  • Absolute neutrophil count < 750/cubic millimeter (mm^3)
  • Platelets ≤ 50,000/mm^3
  • Aspartate aminotransferase (AST) > 10 × ULN
  • Albumin < 3.0 g/dL
  • Total bilirubin > 2.5 × ULN
  • International normalized ratio of prothrombin time (INR) > 1.5 × ULN (unless stable on anticoagulant regimen)
  • Individuals with ESRD (i.e. eGFRcg < 15 mL/min) not on HD, or those on other forms of renal replacement therapy (i.e. peritoneal dialysis)
  • Part B Only (Hepatic Impairment):
  • Active variceal bleeding within 6 months or prior placement of a portosystemic shunt (such as transjugular intrahepatic portosystemic shunt [TIPS])
  • History of hepatorenal syndrome, hepatopulmonary syndrome, Grade 3 or Grade 4 hepatic encephalopathy, or spontaneous bacterial peritonitis within 6 months of screening
  • Grade 2 hepatic encephalopathy at screening
  • Model for end-stage liver disease (MELD) score ≥ 30
  • Abnormal hematological and biochemical parameters, including
  • Absolute neutrophil count < 750/mm^3
  • Platelets < 30,000/mm^3
  • Hemoglobin < 8.0 g/dL
  • Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Trial locations and contacts

30 sites in 8 countries.

30 sites in 8 countries

Taiwan8 sites
  • Changhua Christian Hospital

    Changhua, 500

  • Ditmanson Medical Foundation Chia-Yi Christian Hospital

    Chiayi City, 60002

  • Kaohsiung Medical University Chung-Ho Memorial Hospital

    Kaohsiung City, 807

  • Kaohsiung Chang Gung Memorial Hospital

    Kaohsiung City, 83301

  • Taichung Veterans Genl Hosp

    Taichung, 40705

  • National Taiwan University Hospital

    Taipei, 10001

  • Veterans General Hospital-Taipei

    Taipei, 11217

  • Chang Gung Medical Foundation, Linkou Chang Gung Memorial Hospital

    Taoyuan City, 333

Other trials in Taiwan

Canada5 sites
  • University of Calgary Liver Unit

    Calgary, T2N4Z6

  • Centre de Recherche du Centre Hospitalier de l'Universite de Montreal

    Montreal, H2X 0A9

  • University Health Network,Toronto general Hospital,Toronto centre for liver disease

    Toronto, M5G 2C4

  • Toronto Liver Centre

    Toronto, M6H 3M1

  • (G.I.R.I.) GI Research Institute

    Vancouver, V6Z 2K5

Other trials in Canada

United States4 sites
  • Henry Ford Health System

    Detroit, Michigan, 48202

  • Coalition of Inclusive Medicine

    Los Angeles, California, 90020

  • Silicon Valley Research Institute, Inc

    San Jose, California, 95128

  • Harborview Medical Center

    Seattle, Washington, 98104

Other trials in United States

South Korea4 sites
  • Dong-A University Hospital

    Busan, 49201

  • Pusan National University Hospital

    Busan, 49241

  • Asan Medical Center

    Seoul, 05505

  • Yonsei University Health System, Severance Hospital

    Seoul, 120-752

Other trials in South Korea

Hong Kong3 sites
  • Princess Margaret Hospital

    Kowloon

  • Prince of Wales Hospital

    Shatin, NT

  • Alice Ho Miu Ling Nethersole Hospital

    Tai Po

Other trials in Hong Kong

Italy3 sites
  • Dipartimento di Scienze Mediche e Chirurgiche (DIMEC) AOU Policlinico S.Orsola-Malpighi di Bologna

    Bologna, 40138

  • UOC Gastroenterol-Epatol.-Fondazione IRCCS Ca Granda

    Milan, 20122

  • U.O. Medicina Generale Epatologia IRCCS Humanitas Centro di Ricerca Traslazionale in Epatologia

    Rozzano, Milan, 20089

Other trials in Italy

United Kingdom2 sites
  • Nottingham University Hospital

    London, NG7 2UH

  • King's College Hospital NHS Foundation Trust

    London, SE5 9RS

Other trials in United Kingdom

New Zealand1 site
  • Auckland Clinical Studies

    Grafton, Auckland, 1010

Other trials in New Zealand

About this study

Official title: A Phase 2, Open-label Study to Evaluate the Safety and Efficacy of Switching to Tenofovir Alafenamide (TAF) From Tenofovir Disoproxil Fumarate (TDF) and/or Other Oral Antiviral Treatment (OAV) in Virologically Suppressed Chronic Hepatitis B Subjects With Renal and/or Hepatic Impairment

The primary objective of this study is to evaluate the safety and tolerability and virologic response of tenofovir alafenamide (TAF) in virologically suppressed chronic hepatitis B participants with renal and/or hepatic impairment.

Being tested
TAF
Medical subject headings
Hepatitis B, Chronic

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • TAFDrug

    Also called Vemlidy®

    Tablet administered orally once daily

Study groups in NCT03180619
Study groupRoleWhat they receive
Part A (Renal Impairment): Moderate or Severe Renal ImpairmentExperimentalParticipants with chronic hepatitis B (CHB) and moderate or severe renal impairment who were virologically suppressed and taking tenofovir disoproxil fumarate (TDF), a TDF-containing anti-hepatitis B virus (HBV) regimen, or other oral antivirals (OAVs), will switch to tenofovir alafenamide (TAF) and receive TAF 25 milligram (mg) tablet once daily orally for 96 weeks.
Receives: Drug: TAF
Part A (Renal Impairment): End Stage Renal DiseaseExperimentalParticipants with CHB and end stage renal disease who were virologically suppressed and taking TDF, a TDF-containing anti-HBV regimen, or OAVs, will switch to TAF and receive TAF 25 mg tablet once daily orally for 96 weeks.
Receives: Drug: TAF
Part B: Hepatic ImpairmentExperimentalParticipants with CHB and moderate or severe hepatic impairment who were virologically suppressed and taking TDF, a TDF-containing anti-HBV regimen, or OAVs, will switch to TAF and receive TAF 25 mg tablet once daily orally for 96 weeks.
Receives: Drug: TAF

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Percentage of Participants Achieving Virologic Response (Plasma Hepatitis B Virus [HBV] Deoxyribonucleic Acid [DNA] < 20 IU/mL) at Week 24

    The percentage of participants with HBV DNA < 20 IU/mL at Week 24 was determined by the Missing = Failure (M = F) approach.

    Measured: Week 24

  2. Percentage of Participants Who Experienced Graded Treatment-Emergent Adverse Events (AEs) at Week 24

    Treatment-emergent AEs were defined as:

    • Any AEs with an onset date on or after the study drug start date and no later than the study drug stop date + 3 days after permanent discontinuation of study drug;
    • Any AEs with onset date on or after the study drug start date for those who have not permanently discontinued study drug;
    • Any AEs leading to premature discontinuation of study drug.

    The most severe graded AE from all tests was counted for each participant.

    Measured: Week 24

  3. Percentage of Participants Who Experienced Graded Treatment-Emergent Laboratory Abnormalities at Week 24

    Graded treatment-emergent laboratory abnormalities were defined as values that increased at least 1 toxicity grade from baseline at any postbaseline visit, up to and including the date of last dose of study drug + 3 days for participants who permanently discontinued study drug or the last available date in the database snapshot for participants who were on treatment at the time of the analysis.

    The most severe graded abnormality from all tests was counted for each participant.

    Measured: Week 24

Secondary outcomes (48)
  1. Percentage of Participants Who Experienced Graded Treatment-Emergent AEs at Week 48

    Treatment-emergent AEs were defined as: Any AEs with an onset date on or after the study drug start date and no later than the study drug stop date + 3 days after permanent discontinuation of study drug; Any AEs with onset date on or after the study drug start date for those who have not permanently discontinued study drug; Any AEs leading to premature discontinuation of study drug. The most severe graded AE from all tests was counted for each participant.

    Measured: Week 48

  2. Percentage of Participants Who Experienced Graded Treatment-Emergent AEs at Week 96

    Treatment-emergent AEs were defined as: Any AEs with an onset date on or after the study drug start date and no later than the study drug stop date + 3 days after permanent discontinuation of study drug; Any AEs with onset date on or after the study drug start date for those who have not permanently discontinued study drug; Any AEs leading to premature discontinuation of study drug. The most severe graded AE from all tests was counted for each participant.

    Measured: Week 96

  3. Percentage of Participants Who Experienced Graded Treatment-Emergent Laboratory Abnormalities at Week 48

    Graded treatment-emergent laboratory abnormalities were defined as values that increased at least 1 toxicity grade from baseline at any postbaseline visit, up to and including the date of last dose of study drug + 3 days for participants who permanently discontinued study drug or the last available date in the database snapshot for participants who were on treatment at the time of the analysis.

    The most severe graded abnormality from all tests was counted for each participant.

    Measured: Week 48

  4. Percentage of Participants Who Experienced Graded Treatment-Emergent Laboratory Abnormalities at Week 96

    Graded treatment-emergent laboratory abnormalities were defined as values that increased at least 1 toxicity grade from baseline at any post-baseline visit, up to and including the date of last dose of study drug + 3 days for participants who permanently discontinued study drug or the last available date in the database snapshot for participants who were on treatment at the time of the analysis. The most severe graded abnormality from all tests was counted for each participant.

    Measured: Week 96

  5. Change From Baseline in Estimated Glomerular Filtration Rate by the Cockcroft-Gault Formula (eGFRcg) in Participants With Moderate or Severe Renal Impairment and Hepatically Impaired Participants at Week 24

    GFR is a measure of the rate at which blood is filtered by the kidney. Cockcroft-Gault is an equation (calculation) used to estimate GFR based on serum creatinine, weight, and gender. eGFRcg = (140 - age in years) x (body weight in kg) x (0.85 if female) divided by 72 x serum creatinine in mg/dL.

    Moderate renal impairment= 30 mL/min ≤ eGFRCG ≤ 59 mL/min Severe renal impairment= 15 mL/min ≤ eGFRCG < 30 mL/min Change from baseline was calculated as the value at Week 24 minus the value at Baseline.

    Measured: Baseline, Week 24

  6. Change From Baseline in eGFRcg in Participants With Moderate or Severe Renal Impairment and Hepatically Impaired Participants at Week 48

    GFR is a measure of the rate at which blood is filtered by the kidney. Cockcroft-Gault is an equation (calculation) used to estimate GFR based on serum creatinine, weight, and gender. eGFRcg = (140 - age in years) x (body weight in kg) x (0.85 if female) divided by 72 x serum creatinine in mg/dL.

    Moderate renal impairment= 30 mL/min ≤ eGFRCG ≤ 59 mL/min Severe renal impairment= 15 mL/min ≤ eGFRCG < 30 mL/min Change from baseline was calculated as the value at Week 48 minus the value at Baseline.

    Measured: Baseline, Week 48

  7. Change From Baseline in eGFRcg in Participants With Moderate or Severe Renal Impairment and Hepatically Impaired Participants at Week 96

    GFR is a measure of the rate at which blood is filtered by the kidney. Cockcroft-Gault is an equation (calculation) used to estimate GFR based on serum creatinine, weight, and gender. eGFRcg = (140 - age in years) x (body weight in kg) x (0.85 if female) divided by 72 x serum creatinine in mg/dL.

    Moderate renal impairment= 30 mL/min ≤ eGFRCG ≤ 59 mL/min Severe renal impairment= 15 mL/min ≤ eGFRCG < 30 mL/min Change from baseline was calculated as the value at Week 96 minus the value at Baseline.

    Measured: Baseline, Week 96

  8. Percent Change From Baseline in Hip Bone Mineral Density (BMD) at Week 24

    Percent change = Change from baseline at a postbaseline visit/baseline * 100%.

    Measured: Baseline, Week 24

  9. Percent Change From Baseline in Hip BMD at Week 48

    Percent change = Change from baseline at a postbaseline visit/baseline * 100%.

    Measured: Baseline, Week 48

  10. Percent Change From Baseline in Hip BMD at Week 96

    Percent change = Change from baseline at a postbaseline visit/baseline * 100%.

    Measured: Baseline, Week 96

  11. Percent Change From Baseline in Spine BMD at Week 24

    Percent change = Change from baseline at a postbaseline visit/baseline * 100%.

    Measured: Baseline, Week 24

  12. Percent Change From Baseline in Spine BMD at Week 48

    Percent change = Change from baseline at a postbaseline visit/baseline * 100%.

    Measured: Baseline, Week 48

  13. Percent Change From Baseline in Spine BMD at Week 96

    Percent change = Change from baseline at a postbaseline visit/baseline * 100%.

    Measured: Baseline, Week 96

  14. Percentage of Participants Achieving Virologic Response (Plasma HBV DNA < 20 IU/mL) at Week 48

    The percentage of participants with HBV DNA < 20 IU/mL at Week 48 was determined by the Missing = Failure (M = F) approach.

    Measured: Weeks 48

  15. Percentage of Participants Achieving Virologic Response (Plasma HBV DNA < 20 IU/mL) at Week 96

    The percentage of participants with HBV DNA < 20 IU/mL at Week 48 was determined by the Missing = Failure (M = F) approach.

    Measured: Weeks 96

  16. Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Detected (≥ Lower Limit of Detection [LLOD]) at Week 24

    The percentage of participants with HBV DNA < 20 IU/mL and target detected (≥ LLOD; i.e. 10 IU/mL) at Week 24 was determined by the M = F approach.

    Measured: Week 24

  17. Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Detected (≥ LLOD) at Week 48

    The percentage of participants with HBV DNA < 20 IU/mL and target detected (≥ LLOD; i.e. 10 IU/mL) at Week 48 was determined by the M = F approach.

    Measured: Week 48

  18. Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Detected (≥ LLOD) at Week 96

    The percentage of participants with HBV DNA < 20 IU/mL and target detected (≥ LLOD; i.e. 10 IU/mL) at Week 96 was determined by the M = F approach.

    Measured: Week 96

  19. Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Not Detected (< LLOD) at Week 24

    The percentage of participants with HBV DNA < 20 IU/mL and target not detected (< LLOD; i.e. 10 IU/mL) at Week 24 was determined by the M = F approach.

    Measured: Week 24

  20. Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Not Detected (< LLOD) at Week 48

    The percentage of participants with HBV DNA < 20 IU/mL and target not detected (< LLOD; i.e. 10 IU/mL) at Week 48 was determined by the M = F approach.

    Measured: Weeks 48

  21. Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Not Detected (< LLOD) at Week 96

    The percentage of participants with HBV DNA < 20 IU/mL and target not detected (< LLOD; i.e. 10 IU/mL) at Week 96 was determined by the M = F approach.

    Measured: Weeks 96

  22. Percentage of Participants With Serological Response: Loss of Hepatitis B s-Antigen (HBsAg) at Week 24

    HBsAg loss was defined as HBsAg changing from positive at baseline to negative at a postbaseline. The M = F approach was used for this analysis.

    Measured: Week 24

  23. Percentage of Participants With Serological Response: Loss of HBsAg at Week 48

    HBsAg loss was defined as HBsAg changing from positive at baseline to negative at a postbaseline. The M = F approach was used for this analysis.

    Measured: Week 48

  24. Percentage of Participants With Serological Response: Loss of HBsAg at Week 96

    HBsAg loss was defined as HBsAg changing from positive at baseline to negative at a postbaseline. The M = F approach was used for this analysis.

    Measured: Week 96

  25. Percentage of Participants With Serological Response: Seroconversion to Anti-HBs at Week 24

    HBsAg seroconversion was defined as HBsAg loss and HBsAb test changing from negative/missing at baseline to positive at a postbaseline visit. The M = F approach was used for this analysis.

    Measured: Week 24

  26. Percentage of Participants With Serological Response: Seroconversion to Anti-HBs at Week 48

    HBsAg seroconversion was defined as HBsAg loss and HBsAb test changing from negative/missing at baseline to positive at a postbaseline visit. The M = F approach was used for this analysis.

    Measured: Week 48

  27. Percentage of Participants With Serological Response: Seroconversion to Anti-HBs at Week 96

    HBsAg seroconversion was defined as HBsAg loss and HBsAb test changing from negative/missing at baseline to positive at a postbaseline visit. The M = F approach was used for this analysis.

    Measured: Week 96

  28. Percentage of Participants With Serological Response: Loss of HBeAg in HBeAg-Positive Participants at Week 24

    HBeAg loss was defined as HBeAg changing from positive at baseline to negative at a postbaseline. The M = F approach was used for this analysis.

    Measured: Week 24

  29. Percentage of Participants With Serological Response: Loss of HBeAg in HBeAg-Positive Participants at Week 48

    HBeAg loss was defined as HBeAg changing from positive at baseline to negative at a postbaseline. The M = F approach was used for this analysis.

    Measured: Week 48

  30. Percentage of Participants With Serological Response: Loss of HBeAg in HBeAg-Positive Participants at Week 96

    HBeAg loss was defined as HBeAg changing from positive at baseline to negative at a postbaseline. The M = F approach was used for this analysis.

    Measured: Week 96

  31. Percentage of Participants With Serological Response: Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 24

    HBeAg seroconversion was defined as HBeAg loss and HBeAb test changing from negative/missing at baseline to positive at a postbaseline visit. The M = F approach was used for this analysis.

    Measured: Week 24

  32. Percentage of Participants With Serological Response: Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 48

    HBeAg seroconversion was defined as HBeAg loss and HBeAb test changing from negative/missing at baseline to positive at a postbaseline visit. The M = F approach was used for this analysis.

    Measured: Week 48

  33. Percentage of Participants With Serological Response: Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 96

    HBeAg seroconversion was defined as HBeAg loss and HBeAb test changing from negative/missing at baseline to positive at a postbaseline visit. The M = F approach was used for this analysis.

    Measured: Week 96

  34. Percentage of Participants With Normal Alanine Aminotransferase (ALT) at Week 24 by Central Laboratory and the American Association for the Study of Liver Diseases (AASLD) Criteria

    Central laboratory ULN for ALT were as follows: ≤ 43 U/L for males aged 18 to < 69 years and ≤ 35 U/L for males aged ≥ 69 years; ≤ 34 U/L for females aged 18 to < 69 years and ≤ 32 U/L for females aged ≥ 69 years. The ULN for ALT using the 2018 AASLD normal range was 25 U/L for females and 35 U/L for males. The M = F approach was used for this analysis.

    Measured: Week 24

  35. Percentage of Participants With Normal ALT at Week 48 by Central Laboratory and the AASLD Criteria

    Central laboratory ULN for ALT were as follows: ≤ 43 U/L for males aged 18 to < 69 years and ≤ 35 U/L for males aged ≥ 69 years; ≤ 34 U/L for females aged 18 to < 69 years and ≤ 32 U/L for females aged ≥ 69 years. The ULN for ALT using the 2018 AASLD normal range was 25 U/L for females and 35 U/L for males. The M = F approach was used for this analysis.

    Measured: Week 48

  36. Percentage of Participants With Normal ALT at Week 96 by Central Laboratory and the AASLD Criteria

    Central laboratory ULN for ALT were as follows: ≤ 43 U/L for males aged 18 to < 69 years and ≤ 35 U/L for males aged ≥ 69 years; ≤ 34 U/L for females aged 18 to < 69 years and ≤ 32 U/L for females aged ≥ 69 years. The ULN for ALT using the 2018 AASLD normal range was 25 U/L for females and 35 U/L for males. The M = F approach was used for this analysis.

    Measured: Week 96

  37. Percentage of Participants With Normalized ALT at Week 24 by Central Laboratory and the AASLD Criteria

    ALT normalization was defined as an ALT value that changed from above the normal range at baseline to within the normal range at the given postbaseline visit. Central laboratory ULN for ALT were as follows: ≤ 43 U/L for males aged 18 to < 69 years and ≤ 35 U/L for males aged ≥ 69 years; ≤ 34 U/L for females aged 18 to < 69 years and ≤ 32 U/L for females aged ≥ 69 years. The ULN for ALT using the 2018 AASLD normal range was 25 U/L for females and 35 U/L for males. The M = F approach was used for this analysis.

    Measured: Week 24

  38. Percentage of Participants With Normalized ALT at Week 48 by Central Laboratory and the AASLD Criteria

    ALT normalization was defined as an ALT value that changed from above the normal range at baseline to within the normal range at the given postbaseline visit. Central laboratory ULN for ALT were as follows: ≤ 43 U/L for males aged 18 to < 69 years and ≤ 35 U/L for males aged ≥ 69 years; ≤ 34 U/L for females aged 18 to < 69 years and ≤ 32 U/L for females aged ≥ 69 years. The ULN for ALT using the 2018 AASLD normal range was 25 U/L for females and 35 U/L for males. The M = F approach was used for this analysis.

    Measured: Week 48

  39. Percentage of Participants With Normalized ALT at Week 96 by Central Laboratory and the AASLD Criteria

    ALT normalization was defined as an ALT value that changed from above the normal range at baseline to within the normal range at the given postbaseline visit. Central laboratory ULN for ALT were as follows: ≤ 43 U/L for males aged 18 to < 69 years and ≤ 35 U/L for males aged ≥ 69 years; ≤ 34 U/L for females aged 18 to < 69 years and ≤ 32 U/L for females aged ≥ 69 years. The ULN for ALT using the 2018 AASLD normal range was 25 U/L for females and 35 U/L for males. The M = F approach was used for this analysis.

    Measured: Week 96

  40. Change From Baseline in FibroTest® Score at Week 24

    The FibroTest® score is used to assess liver fibrosis. Scores range from 0.00 to 1.00, with higher scores indicating a greater degree of fibrosis. Change from baseline was calculated as the value at Week 24 minus the value at Baseline.

    Measured: Baseline, Week 24

  41. Change From Baseline in FibroTest® Score at Week 48

    The FibroTest® score is used to assess liver fibrosis. Scores range from 0.00 to 1.00, with higher scores indicating a greater degree of fibrosis. Change from baseline was calculated as the value at Week 48 minus the value at Baseline.

    Measured: Baseline, Week 48

  42. Change From Baseline in FibroTest® Score at Week 96

    The FibroTest® score is used to assess liver fibrosis. Scores range from 0.00 to 1.00, with higher scores indicating a greater degree of fibrosis. Change from baseline was calculated as the value at Week 96 minus the value at Baseline.

    Measured: Week 96

  43. Change From Baseline in Child-Pugh-Turcotte (CPT) Score in Hepatically Impaired Participants at Week 24

    CPT scores grade the severity of cirrhosis and are used to determine the need for liver transplantation. Scores can range from 5 to 15, with higher scores indicating a greater severity of disease.

    Measured: Baseline, Week 24

  44. Change From Baseline in CPT Score in Hepatically Impaired Participants at Week 48

    CPT scores grade the severity of cirrhosis and are used to determine the need for liver transplantation. Scores can range from 5 to 15, with higher scores indicating a greater severity of disease.

    Measured: Baseline, Week 48

  45. Change From Baseline in CPT Score in Hepatically Impaired Participants at Week 96

    CPT scores grade the severity of cirrhosis and are used to determine the need for liver transplantation. Scores can range from 5 to 15, with higher scores indicating a greater severity of disease.

    Measured: Baseline, Week 96

  46. Change From Baseline in Model for End-Stage Liver Disease (MELD) Score in Hepatically Impaired Participants at Week 24

    MELD scores are used to assess prognosis and suitability for liver transplantation. Scores can range from 6 to 40, with higher scores indicating greater disease severity.

    Measured: Baseline, Week 24

  47. Change From Baseline in MELD Score in Hepatically Impaired Participants at Week 48

    MELD scores are used to assess prognosis and suitability for liver transplantation. Scores can range from 6 to 40, with higher scores indicating greater disease severity.

    Measured: Baseline, Week 48

  48. Change From Baseline in MELD Score in Hepatically Impaired Participants at Week 96

    MELD scores are used to assess prognosis and suitability for liver transplantation. Scores can range from 6 to 40, with higher scores indicating greater disease severity.

    Measured: Baseline, Week 96

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Jun 2017
  2. Study start29 Jun 2017
  3. Primary completion27 Mar 2019
  4. Study completion4 Sep 2020

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
124 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03180619
Sponsor's protocol ID
GS-US-320-4035
Other IDs
2016-004625-16, 2016
Status last verified
Aug 2021
First submitted
6 Jun 2017
Last updated
27 Sep 2021
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Qualified external researchers may request IPD for this study after study completion. For more information, please visit our website at https://www.gilead.com/science-and-medicine/research/clinical-trials-transparency-and-data-sharing-policy

Publications

  • Lim YS, Lin CY, Heo J, Bae H, Chuang WL, Hui AJ, et al. Safety and Efficacy of Switching to Tenofovir Alafenamide in Virally Suppressed Chronic Hepatitis B Patients With Hepatic Impairment: Week-48 Results From a Phase 2 Open-label Study [Poster SAT442]. The Digital International Liver Congress (ILC); 2020 27-29 August.

  • Janssen HLA, Lampertico P, Chen CY, Heo J, Fournier C, Ahn SH, et al. Safety and Efficacy of Switching to Tenofovir Alafenamide in Virally Suppressed Chronic Hepatitis B Patients With Renal Impairment: Week-48 Results From a Phase 2 Open-label Study [Poster SAT429]. The Digital International Liver Congress (ILC); 2020 27-29 August.

  • Lim YS, Lampertico P, Bae H, Chuang WL, Heo J, Huang YH, et al. Switching From Tenofovir Disoproxil Fumarate or Other Oral Antiviral Therapy to Tenofovir Alafenamide in Virally Suppressed Chronic Hepatitis B Patients With Hepatic Impairment: Week 24 Efficacy and Safety Results From a Phase 2 Open-label Study [Poster 501]. AASLD: The Liver Meeting; 2019 08-12 November; Boston, MA.

  • Janssen HLA, Lim YS, Gane EJ, Fournier C, Ahn SH, Tsang O, et al. Efficacy and Safety of Switching to Tenofovir Alafenamide in Virally Suppressed Chronic Hepatitis B Patients With Renal Impairment: Week 24 Results From a Phase 2 Open-label Study [Poster 483]. AASLD: The Liver Meeting; 2019 08-12 November; Boston, MA.

  • Liu CJ, Lim YS, Chen CY, Chen CH, Huang YH, Lin CY, Lin CC, Yu ML, Abramov F, Yee LJ, Duan R, Flaherty JF, Su WW, Yang SS, Janssen HLA, Chuang WL. Switching to tenofovir alafenamide in virally-suppressed chronic hepatitis B patients with renal/hepatic impairment: Phase 2 study sub-analysis from Taiwan. J Formos Med Assoc. 2025 Jul 30:S0929-6646(25)00390-0. doi: 10.1016/j.jfma.2025.07.023. Online ahead of print.

    PubMed 40744841
  • Janssen HLA, Lim YS, Lampertico P, Heo J, Chen CY, Fournier C, Tsang TYO, Bae H, Chen CH, Coffin CS, Ahn SH, Trinh H, Flaherty JF, Abramov F, Zhao Y, Liu Y, Lau A, German P, Chuang WL, Agarwal K, Gane E. Switching to tenofovir alafenamide in patients with virologically suppressed chronic hepatitis B and renal or hepatic impairment: final week 96 results from an open-label, multicentre, phase 2 study. Lancet Gastroenterol Hepatol. 2024 Aug;9(8):718-733. doi: 10.1016/S2468-1253(24)00096-7. Epub 2024 Jun 17.

    PubMed 38901444

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing TAF in people with Chronic Hepatitis B, run by Gilead Sciences at 30 sites in 8 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 16 inclusion and 34 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 27 Sep 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 30 sites in Taiwan, Canada, United States, South Korea, Hong Kong and 3 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 9 Apr 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Percentage of Participants Achieving Virologic Response (Plasma Hepatitis B Virus [HBV] Deoxyribonucleic Acid [DNA] < 20 IU/mL) at Week 24 (time frame: Week 24). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03180619, which also lists 6 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Sep 2021.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in