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

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.

ClinicalTrials.gov Identifier: NCT03180619

Recruitment Status : Active, not recruiting

First Posted : June 8, 2017

Results First Posted : April 9, 2020

Last Update Posted : April 9, 2020

Sponsor:

Information provided by (Responsible Party):

Gilead Sciences

Tracking Information

First Submitted Date ^ICMJE

June 6, 2017

First Posted Date ^ICMJE

June 8, 2017

Results First Submitted Date ^ICMJE

March 24, 2020

Results First Posted Date ^ICMJE

April 9, 2020

Last Update Posted Date

April 9, 2020

Actual Study Start Date ^ICMJE

June 29, 2017

Actual Primary Completion Date

March 27, 2019 (Final data collection date for primary outcome measure)

Current Primary Outcome Measures ^ICMJE

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 percentage of participants with HBV DNA < 20 IU/mL at Week 24 was determined by the Missing = Failure (M = F) approach.
Percentage of Participants Who Experienced Graded Treatment-Emergent Adverse Events (AEs) at Week 24 [ Time Frame: 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.
Percentage of Participants Who Experienced Graded Treatment-Emergent Laboratory Abnormalities at Week 24 [ Time Frame: 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.

Original Primary Outcome Measures ^ICMJE

Proportion of Participants Experiencing Graded Adverse Events [ Time Frame: Week 24 ]
Proportion of Participants Experiencing Graded Laboratory Abnormalities [ Time Frame: Week 24 ]
Proportion of Participants Achieving Virologic Response (Plasma HBV DNA < 20 IU/mL) [ Time Frame: Week 24 ]

Change History

Current Secondary Outcome Measures ^ICMJE

Percentage of Participants Who Experienced Graded Treatment-Emergent AEs at Week 48 [ Time Frame: Week 48 ]
Percentage of Participants Who Experienced Graded Treatment-Emergent AEs at Week 96 [ Time Frame: Week 96 ]
Percentage of Participants Who Experienced Graded Treatment-Emergent Laboratory Abnormalities at Week 48 [ Time Frame: Week 48 ]
Percentage of Participants Who Experienced Graded Treatment-Emergent Laboratory Abnormalities at Week 96 [ Time Frame: Week 96 ]
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 [ Time Frame: Baseline, 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.
Change From Baseline in eGFRcg in Participants With Moderate or Severe Renal Impairment and Hepatically Impaired Participants at Week 48 [ Time Frame: Baseline, Week 48 ]
Change From Baseline in eGFRcg in Participants With Moderate or Severe Renal Impairment and Hepatically Impaired Participants at Week 96 [ Time Frame: Baseline, Week 96 ]
Percent Change From Baseline in Hip Bone Mineral Density (BMD) at Week 24 [ Time Frame: Baseline, Week 24 ]
Percent change = Change from baseline at a postbaseline visit/baseline * 100%.
Percent Change From Baseline in Hip BMD at Week 48 [ Time Frame: Baseline, Week 48 ]
Percent Change From Baseline in Hip BMD at Week 96 [ Time Frame: Baseline, Week 96 ]
Percent Change From Baseline in Spine BMD at Week 24 [ Time Frame: Baseline, Week 24 ]
Percent change = Change from baseline at a postbaseline visit/baseline * 100%.
Percent Change From Baseline in Spine BMD at Week 48 [ Time Frame: Baseline, Week 48 ]
Percent Change From Baseline in Spine BMD at Week 96 [ Time Frame: Baseline, Week 96 ]
Percentage of Participants Achieving Virologic Response (Plasma HBV DNA < 20 IU/mL) at Week 48 [ Time Frame: Weeks 48 ]
Percentage of Participants Achieving Virologic Response (Plasma HBV DNA < 20 IU/mL) at Week 96 [ Time Frame: Weeks 96 ]
Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Detected (≥ Lower Limit of Detection [LLOD]) at Week 24 [ Time Frame: 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.
Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Detected (≥ LLOD) at Week 48 [ Time Frame: Week 48 ]
Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Detected (≥ LLOD) at Week 96 [ Time Frame: Week 96 ]
Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Not Detected (< LLOD) at Week 24 [ Time Frame: 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.
Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Not Detected (< LLOD) at Week 48 [ Time Frame: Weeks 48 ]
Percentage of Participants With Plasma HBV DNA < 20 IU/mL and Target Not Detected (< LLOD) at Week 96 [ Time Frame: Weeks 96 ]
Percentage of Participants With Serological Response: Loss of Hepatitis s-Antigen (HBsAg) in Hepatitis B e-Antigen (HBeAg)-Positive Participants at Week 24 [ Time Frame: 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.
Percentage of Participants With Serological Response: Loss of HBsAg in HBeAg-Positive Participants at Week 48 [ Time Frame: Week 48 ]
Percentage of Participants With Serological Response: Loss of HBsAg in HBeAg-Positive Participants at Week 96 [ Time Frame: Week 96 ]
Percentage of Participants With Serological Response: Seroconversion to Anti-HBs in HBeAg-Positive Participants at Week 24 [ Time Frame: 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.
Percentage of Participants With Serological Response: Seroconversion to Anti-HBs in HBeAg-Positive Participants at Week 48 [ Time Frame: Week 48 ]
Percentage of Participants With Serological Response: Seroconversion to Anti-HBs in HBeAg-Positive Participants at Week 96 [ Time Frame: Week 96 ]
Percentage of Participants With Serological Response: Loss of HBeAg in HBeAg-Positive Participants at Week 24 [ Time Frame: 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.
Percentage of Participants With Serological Response: Loss of HBeAg in HBeAg-Positive Participants at Week 48 [ Time Frame: Week 48 ]
Percentage of Participants With Serological Response: Loss of HBeAg in HBeAg-Positive Participants at Week 96 [ Time Frame: Week 96 ]
Percentage of Participants With Serological Response: Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 24 [ Time Frame: 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.
Percentage of Participants With Serological Response: Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 48 [ Time Frame: Week 48 ]
Percentage of Participants With Serological Response: Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 96 [ Time Frame: Week 96 ]
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 [ Time Frame: Week 24 ]
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.
Percentage of Participants With Normal ALT at Week 48 by Central Laboratory and the AASLD Criteria [ Time Frame: Week 48 ]
Percentage of Participants With Normal ALT at Week 96 by Central Laboratory and the AASLD Criteria [ Time Frame: Week 96 ]
Percentage of Participants With Normalized ALT at Week 24 by Central Laboratory and the AASLD Criteria [ Time Frame: Week 24 ]
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.
Percentage of Participants With Normalized ALT at Week 48 by Central Laboratory and the AASLD Criteria [ Time Frame: Week 48 ]
Percentage of Participants With Normalized ALT at Week 96 by Central Laboratory and the AASLD Criteria [ Time Frame: Week 96 ]
Change From Baseline in FibroTest® Score at Week 24 [ Time Frame: Baseline, 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.
Change From Baseline in FibroTest® Score at Week 48 [ Time Frame: Baseline, Week 48 ]
Change From Baseline in FibroTest® Score at Week 96 [ Time Frame: Week 96 ]
Change From Baseline in Child-Pugh-Turcotte (CPT) Score in Hepatically Impaired Participants at Week 24 [ Time Frame: Baseline, 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.
Change From Baseline in CPT Score in Hepatically Impaired Participants at Week 48 [ Time Frame: Baseline, Week 48 ]
Change From Baseline in CPT Score in Hepatically Impaired Participants at Week 96 [ Time Frame: Baseline, Week 96 ]
Change From Baseline in Model for End-Stage Liver Disease (MELD) Score in Hepatically Impaired Participants at Week 24 [ Time Frame: Baseline, 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.
Change From Baseline in MELD Score in Hepatically Impaired Participants at Week 48 [ Time Frame: Baseline, Week 48 ]
Change From Baseline in MELD Score in Hepatically Impaired Participants at Week 96 [ Time Frame: Baseline, Week 96 ]

Original Secondary Outcome Measures ^ICMJE

Proportion of Participants Experiencing Graded Adverse Events at Week 48 [ Time Frame: Week 48 ]
Proportion of Participants Experiencing Graded Adverse Events at Week 96 [ Time Frame: Week 96 ]
Proportion of Participants Experiencing Graded Laboratory Abnormalities at Week 48 [ Time Frame: Week 48 ]
Proportion of Participants Experiencing Graded Laboratory Abnormalities at Week 96 [ Time Frame: Week 96 ]
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 [ Time Frame: 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) * (body weight in kg) * (0.85 if female) divided by 72 * serum creatinine in mg/dL
Change From Baseline in eGFRcg in Participants With Moderate or Severe Renal Impairment and Hepatically Impaired Participants at Week 48 [ Time Frame: Week 48 ]
Change From Baseline in eGFRcg in Participants With Moderate or Severe Renal Impairment and Hepatically Impaired Participants at Week 96 [ Time Frame: Week 96 ]
Percent Change From Baseline in Hip Bone Mineral Density (BMD) at Week 24 [ Time Frame: Week 24 ]
Percent Change From Baseline in Hip BMD at Week 48 [ Time Frame: Week 48 ]
Percent Change From Baseline in Hip BMD at Week 96 [ Time Frame: Week 96 ]
Percent Change From Baseline in Spine BMD at Week 24 [ Time Frame: Week 24 ]
Percent Change From Baseline in Spine BMD at Week 48 [ Time Frame: Week 48 ]
Percent Change From Baseline in Spine BMD at Week 96 [ Time Frame: Week 96 ]
Proportion of Participants Achieving Virologic Response (Plasma HBV DNA < 20 IU/mL) at Week 48 [ Time Frame: Weeks 48 ]
Proportion of Participants Achieving Virologic Response (Plasma HBV DNA < 20 IU/mL) at Week 96 [ Time Frame: Weeks 96 ]
Proportion of Participants with Plasma HBV DNA < 20 IU/mL and Target Detected (i.e. < Lower Limit of Detection (LLOD)) at Week 24 [ Time Frame: Week 24 ]
Proportion of Participants with Plasma HBV DNA < 20 IU/mL and Target Detected (i.e. < LLOD) at Week 48 [ Time Frame: Week 48 ]
Proportion of Participants with Plasma HBV DNA < 20 IU/mL and Target Detected (i.e. < LLOD) at Week 96 [ Time Frame: Week 96 ]
Proportion of Participants with Plasma HBV DNA < 20 IU/mL and Target Not Detected (i.e. < LLOD) at Week 24 [ Time Frame: Week 24 ]
Proportion of Participants with Plasma HBV DNA < 20 IU/mL and Target Not Detected (i.e. < LLOD) at Week 48 [ Time Frame: Weeks 48 ]
Proportion of Participants with Plasma HBV DNA < 20 IU/mL and Target Not Detected (i.e. < LLOD) at Week 96 [ Time Frame: Weeks 96 ]
Proportion of Participants with Serological Response: Loss of Hepatitis s-Antigen (HBsAg) and Seroconversion to Anti-HBs in Hepatitis B e-Antigen (HBeAg)-Positive Participants at Week 24 [ Time Frame: Week 24 ]
Proportion of Participants with Serological Response: Loss of HBsAg and Seroconversion to Anti-HBs in HBeAg-Positive Participants at Week 48 [ Time Frame: Week 48 ]
Proportion of Participants with Serological Response: Loss of HBsAg and Seroconversion to Anti-HBs in HBeAg-Positive Participants at Week 96 [ Time Frame: Week 96 ]
Proportion of Participants with Serological Response: Loss of HBeAg and Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 24 [ Time Frame: Week 24 ]
Proportion of Participants with Serological Response: Loss of HBeAg and Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 48 [ Time Frame: Week 48 ]
Proportion of Participants with Serological Response: Loss of HBeAg and Seroconversion to Anti-HBe in HBeAg-Positive Participants at Week 96 [ Time Frame: Week 96 ]
Proportion of Participants with Normal Alanine Aminotransferase (ALT) at Week 24 [ Time Frame: Week 24 ]
Proportion of Participants with Normal ALT at Week 48 [ Time Frame: Week 24 ]
Proportion of Participants with Normal ALT at Week 96 [ Time Frame: Week 24 ]
Proportion of Participants with Normalized ALT at Week 24 [ Time Frame: Week 48 ]
Proportion of Participants with Normalized ALT at Week 48 [ Time Frame: Week 96 ]
Proportion of Participants with Normalized ALT at Week 96 [ Time Frame: Week 96 ]
Change in Fibrosis as Assessed by FibroTest® at Week 24 [ Time Frame: Week 24 ]
Change in Fibrosis as Assessed by FibroTest® at Week 48 [ Time Frame: Week 48 ]
Change in Fibrosis as Assessed by FibroTest® at Week 96 [ Time Frame: Week 96 ]
Change From Baseline in Child-Pugh-Turcotte (CPT) Score in Hepatically Impaired Participants at Week 24 [ Time Frame: Week 24 ]
CPT scores grade the severity of cirrhosis and are used to determine the need for liver transplantation.
Change From Baseline in CPT Score in Hepatically Impaired Participants at Week 48 [ Time Frame: Week 48 ]
Change From Baseline in CPT Score in Hepatically Impaired Participants at Week 96 [ Time Frame: Week 98 ]
Change From Baseline in Model for End-Stage Liver Disease (MELD) Score in Hepatically Impaired Participants at Week 24 [ Time Frame: Week 24 ]
MELD scores are used to assess prognosis and suitability for liver transplantation.
Change From Baseline in MELD Score in Hepatically Impaired Participants at Week 48 [ Time Frame: Week 48 ]
Change From Baseline in MELD Score in Hepatically Impaired Participants at Week 96 [ Time Frame: Week 96 ]

Current Other Pre-specified Outcome Measures

Not Provided

Original Other Pre-specified Outcome Measures

Not Provided

Descriptive Information

Brief Title ^ICMJE

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

Official Title ^ICMJE

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

Brief Summary

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

This study consists of 2 Parts. Approximately 90 renally impaired participants will be enrolled in Part A and approximately 30 hepatically impaired participants will be enrolled in Part B.

Detailed Description

Not Provided

Study Type ^ICMJE

Interventional

Study Phase ^ICMJE

Phase 2

Study Design ^ICMJE

Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment

Condition ^ICMJE

Chronic Hepatitis B

Intervention ^ICMJE

Drug: TAF

25 mg tablet will be administered orally once daily for 96 weeks with food

Other Name: Vemlidy®

Study Arms ^ICMJE

Experimental: Part A (Renal Impairment): Moderate or Severe Renal Impairment
Virologically suppressed participants with chronic hepatitis B (CHB) and moderate or severe renal impairment taking TDF, a TDF-containing anti-hepatitis B virus (HBV) regimen, or other OAVs, will switch to TAF.

Intervention: Drug: TAF
Experimental: Part A (Renal Impairment): End Stage Renal Disease
Virologically suppressed participants with CHB and end stage renal disease taking TDF, a TDF-containing anti-HBV regimen, or OAVs, will switch to TAF.

Intervention: Drug: TAF
Experimental: Part B: Hepatic Impairment
Virologically suppressed participants with CHB and moderate or severe hepatic impairment taking TDF, a TDF-containing anti-HBV regimen, or OAVs, will switch to TAF.

Intervention: Drug: TAF

Publications *

Not Provided

* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.

Recruitment Information

Recruitment Status ^ICMJE

Active, not recruiting

Actual Enrollment ^ICMJE

124

Original Estimated Enrollment ^ICMJE

120

Estimated Study Completion Date ^ICMJE

February 2021

Actual Primary Completion Date

March 27, 2019 (Final data collection date for primary outcome measure)

Eligibility Criteria ^ICMJE

Key Inclusion Criteria:

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 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
Moderate renal impairment (30 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

Key Exclusion Criteria:

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
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 g/dL
- Absolute neutrophil count < 750/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.

Sex/Gender ^ICMJE

Sexes Eligible for Study:

All

Ages ^ICMJE

18 Years and older (Adult, Older Adult)

Accepts Healthy Volunteers ^ICMJE

Contacts ^ICMJE

Contact information is only displayed when the study is recruiting subjects

Listed Location Countries ^ICMJE

Canada, Hong Kong, Italy, Korea, Republic of, New Zealand, Taiwan, United Kingdom, United States

Removed Location Countries

France

Administrative Information

NCT Number ^ICMJE

NCT03180619

Other Study ID Numbers ^ICMJE

GS-US-320-4035
2016-004625-16 ( EudraCT Number )

Has Data Monitoring Committee

Yes

U.S. FDA-regulated Product

Studies a U.S. FDA-regulated Drug Product:	Yes
Studies a U.S. FDA-regulated Device Product:	No

IPD Sharing Statement ^ICMJE

Not Provided

Responsible Party

Gilead Sciences

Study Sponsor ^ICMJE

Gilead Sciences

Collaborators ^ICMJE

Not Provided

Investigators ^ICMJE

Study Director:

Gilead Study Director

Gilead Sciences

PRS Account

Gilead Sciences

Verification Date

March 2020

^ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP

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