Sofosbuvir/Velpatasvir Fixed-Dose Combination in HCV-Infected Adults Who Are Undergoing Liver Transplantation

Study Overview
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Brief Summary
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The primary objectives of this study are to evaluate the antiviral efficacy, safety, and tolerability of sofosbuvir/velpatasvir (SOF/VEL) fixed-dose combination (FDC) in hepatitis C virus (HCV)-infected adults who are undergoing liver transplantation.

Official Title
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A Phase 2, Open-Label Study to Investigate the Safety and Efficacy of Sofosbuvir/Velpatasvir Fixed Dose Combination Administered for Four Weeks in Patients Infected With Chronic HCV in the Peri-Operative Liver Transplantation Setting

Conditions
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Hepatitis C Virus Infection

Intervention / Treatment
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* Drug: SOF/VEL


Participation Criteria
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Eligibility Criteria
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Key Inclusion Criteria: HCV-infected, male and non-pregnant/non-lactating females, who are undergoing liver transplantation Key Exclusion Criteria: Receiving an HCV-infected liver HIV or hepatitis B virus (HBV) co-infected Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: SOF/VEL<br>SOF/VEL FDC for 4 weeks starting on the day of or day after the participant's liver transplant | Drug: SOF/VEL<br>* 400/100 mg FDC tablet administered orally once daily<br>* Other names: Epclusa®;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 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; ie, 15 IU/mL) at 12 weeks after stopping study treatment. | Posttreatment Week 12 | 
| Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event |  | Up to Week 4 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Percentage of Participants With SVR at 4 Weeks After Discontinuation of Therapy (SVR4) | SVR4 was defined as HCV RNA < LLOQ at 4 weeks after stopping study treatment. | Posttreatment Week 4 | 
| Percentage of Participants With HCV RNA < LLOQ On Treatment |  | Days 3, 5, 7, 14, 21, and 28 | 
| Percentage of Participants With Overall Virologic Failure | Virologic failure was defined as 1) End of Treatment Virologic Failure: HCV RNA ≥ 15 IU/mL at last observed HCV RNA measurement on or prior to last dose date of SOF/VEL + 3 days after completion of 28 ± 3 days of SOF/VEL treatment, or 2) Relapse: HCV RNA ≥ 15 IU/mL during the posttreatment follow-up period having achieved HCV RNA < 15 IU/mL at the end of treatment, confirmed with 2 consecutive values or last available posttreatment measurement. | Up to Posttreatment Week 12 |