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Sofosbuvir/Velpatasvir Fixed-Dose Combination in Adults With Chronic HCV Infection and Child-Pugh Class B Cirrhosis

A Phase 3, Multicenter, Open-Label Study to Investigate the Efficacy and Safety of Sofosbuvir/GS-5816 Fixed-Dose Combination in Subjects With Chronic HCV Infection and Child-Pugh Class B Cirrhosis

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02201901
Acronym
ASTRAL-4
Enrollment
268
Registered
2014-07-28
Start date
2014-07-31
Completion date
2015-11-30
Last updated
2018-11-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hepatitis C Virus Infection

Keywords

Sofosbuvir, Velpatasvir, SOF/VEL, GS-5816, Hepatitis C, HCV, Cirrhosis, CPT-B

Brief summary

The primary objectives of this study are to evaluate the efficacy, safety, and tolerability of sofosbuvir (SOF)/velpatasvir (VEL) fixed dose combination (FDC) with and without ribavirin (RBV) for 12 weeks and SOF/VEL FDC for 24 weeks in adults with chronic hepatitis C virus (HCV) infection and Child-Pugh-Turcotte (CPT) class B cirrhosis.

Interventions

DRUGSOF/VEL

400/100 mg tablets administered orally once daily

DRUGRBV

Ribavirin (RBV) tablets administered orally in a divided daily dose according to package insert weight-based dosing recommendations (\< 75 kg = 1000 mg and ≥ 75 kg = 1200 mg)

Sponsors

Gilead Sciences
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Willing and able to provide written informed consent * HCV RNA \> 10\^4 IU/mL at screening * Chronic HCV infection (≥ 6 months) * Confirmed CPT class B (7-9) at screening

Exclusion criteria

* Current or prior history of solid organ transplantation, significant pulmonary disease, significant cardiac disease, or porphyria * Inability to exclude hepatocellular carcinoma (HCC) by imaging within 6 months of baseline/Day 1 * Infection with hepatitis B virus (HBV) or human immunodeficiency virus (HIV) * Screening ECG with clinically significant abnormalities * Prior exposure to SOF or any other nucleotide analogue HCV nonstructural protein 5B (NS5B) inhibitor or any HCV NS5A inhibitor * Laboratory results outside of acceptable ranges at screening

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Sustained Virologic Response (SVR) 12 Weeks After Discontinuation of Therapy (SVR12)Posttreatment Week 12SVR12 was defined as HCV RNA \< the lower limit of quantitation (LLOQ) 12 weeks following the last dose of study drug.
Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse EventUp to 24 weeks plus 30 days

Secondary

MeasureTime frameDescription
Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)Posttreatment Weeks 4 and 24SVR4 and SVR24 were defined as HCV RNA \< LLOQ at 4 and 24 weeks following the last dose of study drug, respectively.
Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24
Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Baseline; Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24
Percentage of Participants With Virologic FailureUp to Posttreatment Week 24Virologic failure was defined as * On-treatment virologic failure * HCV RNA ≥ LLOQ after having previously had HCV RNA \< LLOQ, while on treatment, * \> 1 log10 IU/mL increase in HCV RNA from nadir while on treatment, * HCV RNA persistently ≥ LLOQ through 8 weeks of treatment (ie nonresponse) * Relapse * HCV RNA ≥ LLOQ during the posttreatment period having achieved HCV RNA \< LLOQ at end of treatment, confirmed with 2 consecutive values or last available posttreatment measurement
Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreBaseline to Posttreatment Week 24Model for End-Stage Liver Disease (MELD) scores are used to assess prognosis and suitability for liver transplantation. Scores can range from 6 to 40; higher scores/increased scores indicate greater severity of disease.
Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreBaseline to Posttreatment Week 24CPT scores grade the severity of cirrhosis and are used to determine the need for liver transplantation. Scores can range from 5 to 15; higher scores/increased scores indicate greater severity of disease.

Countries

Puerto Rico, United States

Participant flow

Recruitment details

Participants were enrolled at a total of 47 study sites in the United States. The first participant was screened on 31 July 2014. The last study visit occurred on 25 November 2015.

Pre-assignment details

438 participants were screened.

Participants by arm

ArmCount
SOF/VEL 12 Weeks (Group 1)
SOF/VEL (Sofosbuvir/velpatasvir) (400/100 mg) fixed dose combination (FDC) tablet once daily for 12 weeks
90
SOF/VEL+RBV 12 Weeks (Group 2)
SOF/VEL (400/100 mg) FDC tablet + Ribavirin (RBV) tablets (1000 or 1200 mg/day divided twice daily) administered orally once daily for 12 weeks
87
SOF/VEL 24 Weeks ((Group 3)
SOF/VEL (400/100 mg) FDC tablet once daily for 24 weeks
90
Total267

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event110
Overall StudyDeath333
Overall StudyLack of Efficacy716
Overall StudyLost to Follow-up232
Overall StudyRandomized but never treated010
Overall StudyWithdrew Consent202

Baseline characteristics

CharacteristicSOF/VEL 24 Weeks ((Group 3)SOF/VEL 12 Weeks (Group 1)SOF/VEL+RBV 12 Weeks (Group 2)Total
Age, Continuous58 years
STANDARD_DEVIATION 5.8
58 years
STANDARD_DEVIATION 6.3
58 years
STANDARD_DEVIATION 6.9
58 years
STANDARD_DEVIATION 6.3
Ethnicity (NIH/OMB)
Hispanic or Latino
13 Participants13 Participants13 Participants39 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
77 Participants77 Participants74 Participants228 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
HCV Genotype
Genotype 1
71 participants68 participants68 participants207 participants
HCV Genotype
Genotype 2
4 participants4 participants4 participants12 participants
HCV Genotype
Genotype 3
12 participants14 participants13 participants39 participants
HCV Genotype
Genotype 4
2 participants4 participants2 participants8 participants
HCV Genotype
Genotype 6
1 participants0 participants0 participants1 participants
HCV RNA5.9 log 10 IU/mL
STANDARD_DEVIATION 0.63
6.0 log 10 IU/mL
STANDARD_DEVIATION 0.54
5.8 log 10 IU/mL
STANDARD_DEVIATION 0.61
5.9 log 10 IU/mL
STANDARD_DEVIATION 0.6
HCV RNA Category
< 800,000 IU/mL
45 participants31 participants42 participants118 participants
HCV RNA Category
≥ 800,000 IU/mL
45 participants59 participants45 participants149 participants
IL28B
CC
20 participants20 participants22 participants62 participants
IL28B
CT
49 participants51 participants46 participants146 participants
IL28B
Missing
2 participants0 participants0 participants2 participants
IL28B
TT
19 participants19 participants19 participants57 participants
Race/Ethnicity, Customized
American Indian or Alaska Native
0 participants0 participants1 participants1 participants
Race/Ethnicity, Customized
Asian
2 participants3 participants0 participants5 participants
Race/Ethnicity, Customized
Black or African American
6 participants6 participants5 participants17 participants
Race/Ethnicity, Customized
Native Hawaiian or Pacific Islander
0 participants0 participants1 participants1 participants
Race/Ethnicity, Customized
Not Disclosed
1 participants0 participants0 participants1 participants
Race/Ethnicity, Customized
Other
0 participants2 participants1 participants3 participants
Race/Ethnicity, Customized
White
81 participants79 participants79 participants239 participants
Sex: Female, Male
Female
27 Participants33 Participants21 Participants81 Participants
Sex: Female, Male
Male
63 Participants57 Participants66 Participants186 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
65 / 9074 / 8761 / 90
serious
Total, serious adverse events
17 / 9014 / 8716 / 90

Outcome results

Primary

Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event

Time frame: Up to 24 weeks plus 30 days

Population: Safety Analysis Set

ArmMeasureValue (NUMBER)
SOF/VEL 12 Weeks (Group 1)Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event1.1 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event16.1 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event4.4 percentage of participants
Primary

Percentage of Participants With Sustained Virologic Response (SVR) 12 Weeks After Discontinuation of Therapy (SVR12)

SVR12 was defined as HCV RNA \< the lower limit of quantitation (LLOQ) 12 weeks following the last dose of study drug.

Time frame: Posttreatment Week 12

Population: The Full Analysis Set (FAS): participants who were randomized into the study and received at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With Sustained Virologic Response (SVR) 12 Weeks After Discontinuation of Therapy (SVR12)83.3 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With Sustained Virologic Response (SVR) 12 Weeks After Discontinuation of Therapy (SVR12)94.3 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With Sustained Virologic Response (SVR) 12 Weeks After Discontinuation of Therapy (SVR12)87.8 percentage of participants
Comparison: A sample size of 75 participants per treatment group would provide over 99% power to detect 40% improvement in SVR12 rate from the assumed spontaneous rate of 1% or less using a 2-sided exact 1-sample binomial test at significance level of 0.0167.p-value: <0.001Binomial test
Comparison: A sample size of 75 participants per treatment group would provide over 99% power to detect 40% improvement in SVR12 rate from the assumed spontaneous rate of 1% or less using a 2-sided exact 1-sample binomial test at significance level of 0.0167.p-value: <0.001Binomial test
Comparison: A sample size of 75 participants per treatment group would provide over 99% power to detect 40% improvement in SVR12 rate from the assumed spontaneous rate of 1% or less using a 2-sided exact 1-sample binomial test at significance level of 0.0167.p-value: <0.001Binomial test
Secondary

Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24

Time frame: Baseline; Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 1(Group 1: N=89; Group 2: N=83; Group 3: N=88)-3.51 log10 IU/mLStandard Deviation 0.652
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 24 (Group 1: N=0; Group 2: N=0; Group 3: N =84)NA log10 IU/mL
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 6(Group 1: N=89; Group 2: N=85; Group 3: N=88)-4.87 log10 IU/mLStandard Deviation 0.536
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 16 (Group 1: N=0; Group 2: N=0; Group 3: N=85)NA log10 IU/mL
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 20 (Group 1: N=0; Group 2: N=0; Group 3: N =84)NA log10 IU/mL
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 8(Group 1: N=89; Group 2: N=83; Group 3: N=87)-4.87 log10 IU/mLStandard Deviation 0.536
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 4(Group 1: N=88; Group 2: N=86; Group 3: N=88)-4.78 log10 IU/mLStandard Deviation 0.549
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 2(Group 1: N=89; Group 2: N=87; Group 3: N=88)-4.24 log10 IU/mLStandard Deviation 0.677
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 10(Group 1: N=89; Group 2: N=84; Group 3, N=87)-4.87 log10 IU/mLStandard Deviation 0.536
SOF/VEL 12 Weeks (Group 1)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 12(Group 1: N=89; Group 2: N=82; Group 3: N=86)-4.87 log10 IU/mLStandard Deviation 0.536
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 10(Group 1: N=89; Group 2: N=84; Group 3, N=87)-4.67 log10 IU/mLStandard Deviation 0.634
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 12(Group 1: N=89; Group 2: N=82; Group 3: N=86)-4.68 log10 IU/mLStandard Deviation 0.624
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 2(Group 1: N=89; Group 2: N=87; Group 3: N=88)-4.17 log10 IU/mLStandard Deviation 0.647
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 16 (Group 1: N=0; Group 2: N=0; Group 3: N=85)NA log10 IU/mL
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 20 (Group 1: N=0; Group 2: N=0; Group 3: N =84)NA log10 IU/mL
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 24 (Group 1: N=0; Group 2: N=0; Group 3: N =84)NA log10 IU/mL
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 4(Group 1: N=88; Group 2: N=86; Group 3: N=88)-4.58 log10 IU/mLStandard Deviation 0.568
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 1(Group 1: N=89; Group 2: N=83; Group 3: N=88)-3.63 log10 IU/mLStandard Deviation 0.691
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 6(Group 1: N=89; Group 2: N=85; Group 3: N=88)-4.68 log10 IU/mLStandard Deviation 0.607
SOF/VEL+RBV 12 Weeks (Group 2)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 8(Group 1: N=89; Group 2: N=83; Group 3: N=87)-4.68 log10 IU/mLStandard Deviation 0.622
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 24 (Group 1: N=0; Group 2: N=0; Group 3: N =84)-4.77 log10 IU/mLStandard Deviation 0.613
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 16 (Group 1: N=0; Group 2: N=0; Group 3: N=85)-4.76 log10 IU/mLStandard Deviation 0.617
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 1(Group 1: N=89; Group 2: N=83; Group 3: N=88)-3.72 log10 IU/mLStandard Deviation 0.68
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 2(Group 1: N=89; Group 2: N=87; Group 3: N=88)-4.38 log10 IU/mLStandard Deviation 0.669
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 4(Group 1: N=88; Group 2: N=86; Group 3: N=88)-4.70 log10 IU/mLStandard Deviation 0.613
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 6(Group 1: N=89; Group 2: N=85; Group 3: N=88)-4.74 log10 IU/mLStandard Deviation 0.63
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 8(Group 1: N=89; Group 2: N=83; Group 3: N=87)-4.76 log10 IU/mLStandard Deviation 0.613
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 12(Group 1: N=89; Group 2: N=82; Group 3: N=86)-4.75 log10 IU/mLStandard Deviation 0.618
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 20 (Group 1: N=0; Group 2: N=0; Group 3: N =84)-4.77 log10 IU/mLStandard Deviation 0.613
SOF/VEL 24 Weeks (Group 3)Change From Baseline in HCV RNA at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 10(Group 1: N=89; Group 2: N=84; Group 3, N=87)-4.76 log10 IU/mLStandard Deviation 0.613
Secondary

Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) Score

CPT scores grade the severity of cirrhosis and are used to determine the need for liver transplantation. Scores can range from 5 to 15; higher scores/increased scores indicate greater severity of disease.

Time frame: Baseline to Posttreatment Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (NUMBER)
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreNo Change43.5 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreDecrease (Improvement)44.9 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreIncrease (Worsening)11.6 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreNo Change37.3 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreDecrease (Improvement)53.3 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreIncrease (Worsening)9.3 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreDecrease (Improvement)63.8 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreIncrease (Worsening)8.7 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in Child-Pugh-Turcotte (CPT) ScoreNo Change27.5 percentage of participants
Secondary

Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD Score

Model for End-Stage Liver Disease (MELD) scores are used to assess prognosis and suitability for liver transplantation. Scores can range from 6 to 40; higher scores/increased scores indicate greater severity of disease.

Time frame: Baseline to Posttreatment Week 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (NUMBER)
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreNo Change20.3 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreDecrease (Improvement)55.1 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreIncrease (Worsening)24.6 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreNo Change25.3 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreDecrease (Improvement)49.3 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreIncrease (Worsening)25.3 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreDecrease (Improvement)50.7 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreIncrease (Worsening)27.5 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With a Decrease, No Change, or Increase Between Baseline and Posttreatment Week 24 in MELD ScoreNo Change21.7 percentage of participants
Secondary

Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24

Time frame: Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24

Population: Participants in the Full Analysis Set with available data were analyzed.

ArmMeasureGroupValue (NUMBER)
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 1(Group 1: N=90; Group 2: N=87; Group 3: N=90)2.2 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 2 (Group 1: N=90; Group 2: N=87;Group 3: N=89)34.4 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 4 (Group 1: N=90; Group 2: N=87; Group 3: N=89)81.1 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 6(Group 1: N=89; Group 2: N=85; Group 3: N=88)98.9 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 8(Group 1: N=89; Group 2: N=84; Group 3: N=87)98.9 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 10(Group 1: N=89; Group 2: N=84; Group 3: N=87)100.0 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 12(Group 1: N=89; Group 2: N=83; Group 3: N=87)100.0 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 16(Group 1: N=0; Group 2: N=0; Group 3: N=86)NA percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 20(Group 1: N=0; Group 2: N=0;Group 3: N=84)NA percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 24(Group 1: N=0; Group 2: N=0; Group 3: N=84)NA percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 20(Group 1: N=0; Group 2: N=0;Group 3: N=84)NA percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 1(Group 1: N=90; Group 2: N=87; Group 3: N=90)14.9 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 10(Group 1: N=89; Group 2: N=84; Group 3: N=87)98.8 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 8(Group 1: N=89; Group 2: N=84; Group 3: N=87)98.8 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 2 (Group 1: N=90; Group 2: N=87;Group 3: N=89)49.4 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 24(Group 1: N=0; Group 2: N=0; Group 3: N=84)NA percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 16(Group 1: N=0; Group 2: N=0; Group 3: N=86)NA percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 4 (Group 1: N=90; Group 2: N=87; Group 3: N=89)80.5 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 12(Group 1: N=89; Group 2: N=83; Group 3: N=87)98.8 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 6(Group 1: N=89; Group 2: N=85; Group 3: N=88)97.6 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 16(Group 1: N=0; Group 2: N=0; Group 3: N=86)97.7 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 6(Group 1: N=89; Group 2: N=85; Group 3: N=88)98.9 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 8(Group 1: N=89; Group 2: N=84; Group 3: N=87)100.0 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 10(Group 1: N=89; Group 2: N=84; Group 3: N=87)100.0 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 20(Group 1: N=0; Group 2: N=0;Group 3: N=84)100.0 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 12(Group 1: N=89; Group 2: N=83; Group 3: N=87)97.7 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 1(Group 1: N=90; Group 2: N=87; Group 3: N=90)11.1 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 24(Group 1: N=0; Group 2: N=0; Group 3: N=84)100.0 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 2 (Group 1: N=90; Group 2: N=87;Group 3: N=89)39.3 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With HCV RNA < LLOQ at Weeks 1, 2, 4, 6, 8, 10, 12, 16, 20, and 24Wk 4 (Group 1: N=90; Group 2: N=87; Group 3: N=89)91.0 percentage of participants
Secondary

Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)

SVR4 and SVR24 were defined as HCV RNA \< LLOQ at 4 and 24 weeks following the last dose of study drug, respectively.

Time frame: Posttreatment Weeks 4 and 24

Population: Full Analysis Set

ArmMeasureGroupValue (NUMBER)
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)SVR492.2 percentage of participants
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)SVR2483.3 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)SVR495.4 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)SVR2494.3 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)SVR490.0 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)SVR2487.8 percentage of participants
Secondary

Percentage of Participants With Virologic Failure

Virologic failure was defined as * On-treatment virologic failure * HCV RNA ≥ LLOQ after having previously had HCV RNA \< LLOQ, while on treatment, * \> 1 log10 IU/mL increase in HCV RNA from nadir while on treatment, * HCV RNA persistently ≥ LLOQ through 8 weeks of treatment (ie nonresponse) * Relapse * HCV RNA ≥ LLOQ during the posttreatment period having achieved HCV RNA \< LLOQ at end of treatment, confirmed with 2 consecutive values or last available posttreatment measurement

Time frame: Up to Posttreatment Week 24

Population: Full Analysis Set

ArmMeasureValue (NUMBER)
SOF/VEL 12 Weeks (Group 1)Percentage of Participants With Virologic Failure12.2 percentage of participants
SOF/VEL+RBV 12 Weeks (Group 2)Percentage of Participants With Virologic Failure3.4 percentage of participants
SOF/VEL 24 Weeks (Group 3)Percentage of Participants With Virologic Failure8.9 percentage of participants

Source: ClinicalTrials.gov · Data processed: Mar 12, 2026