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Sofosbuvir/Velpatasvir/Voxilaprevir

Phase 3

Chronic Hepatitis C | Small molecule | Infectious Disease |Gilead Sciences, Inc.|Last Updated: Mar 10, 2022

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDDMCBiomarker
Total Trials3
Total Enrollment680

FDA Designations

No designations recorded

Clinical trial landscape

Sofosbuvir/Velpatasvir/Voxilaprevir · 3 trials · 2 indications

Phase 3 2Phase 2 1
NCT01783678A Phase 3, Open-label Study to Investigate the Efficacy and Safety of Sofosbuvir Plus Ribavirin in Chronic Genotype 1, 2, 3 and 4 Hepatitis C Virus (HCV) and Human Immunodeficiency Virus (HIV) Co-infected AdultsChronic Hepatitis C
COMPLETED275 Analytics
NCT01641640Sofosbuvir With Peginterferon Alfa 2a and Ribavirin for 12 Weeks in Treatment-Naive Subjects With Chronic Genotype 1, 4, 5, or 6 HCV InfectionChronic Hepatitis C
COMPLETED328 Analytics
PHASE3COMPLETED
A Phase 3, Open-label Study to Investigate the Efficacy and Safety of Sofosbuvir Plus Ribavirin in Chronic Genotype 1, 2, 3 and 4 Hepatitis C Virus (HCV) and Human Immunodeficiency Virus (HIV) Co-infected Adults
Chronic Hepatitis CUnlock trial analytics
PHASE3COMPLETED
Sofosbuvir With Peginterferon Alfa 2a and Ribavirin for 12 Weeks in Treatment-Naive Subjects With Chronic Genotype 1, 4, 5, or 6 HCV Infection
Chronic Hepatitis CUnlock trial analytics

Study Endpoints

Primary Endpoints

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

SVR12 was defined as HCV RNA \< the lower limit of quantitation (LLOQ, ie, \< 25 IU/mL) 12 weeks following the last dose of study drug.

Incidence of Adverse Events Leading to Permanent Discontinuation of Study Drug(s)
Up to 24 weeks

The percentage of participants permanently discontinuing any study drug due to an adverse event was summarized.

Percentage of Participants Achieving Sustained Virologic Response (SVR)12
Posttreatment Week 12

SVR12 was defined as HCV RNA \< the lower limit of quantitation (LLOQ; ie, 25 IU/mL) 12 weeks after cessation of therapy.

Number of Participants Experiencing Adverse Events Leading to Permanent Discontinuation of Study Drug
Baseline to Week 12

The number of participants experiencing adverse events leading to permanent discontinuation of study drug was summarized. Adverse events may or may not have been related to study treatment. Participants discontinuing study drug were permitted to remain on the study for further assessments.

Number of Participants With Grade 3 and 4 Adverse Events
up to 16 weeks

Number of participants with grade 3 and 4 adverse events during treatment with and/or within 30 of completion of SOF/VEL/VOX in HCV infected

Number of Participants Who Achieve Sustained Virologic Response (SVR) 12 Weeks After Completion of Therapy (SVR12)
Post-treatment week 12

Intention to treat (ITT) analysis. Sustained Virologic Response as measure by an undetectable HCV RNA level 12 weeks after completion of therapy.

Secondary Endpoints

Percentage of Participants With Sustained Virologic Response at 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)
Posttreatment Weeks 4 and 24
HCV RNA Change From Baseline at Week 1
Baseline; Week 1
HCV RNA Change From Baseline at Week 2
Baseline; Week 2
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Genotype 2 treatment-naiveEXPERIMENTALTreatment-naive (TN) participants with HIV-1 and genotype 2 HCV coinfection will receive sofosbuvir plus RBV for 12 weeks.
Genotype 2/3 treatment-experiencedEXPERIMENTALTreatment-experienced (TE) participants with HIV-1 and genotype 2 or 3 HCV co-infection will receive sofosbuvir plus RBV for 24 weeks.
Genotype 1/3/4 treatment-naiveEXPERIMENTALTreatment naive (TN) participants with HIV-1 and genotype 1, 3, or 4 HCV co-infection will receive sofosbuvir plus RBV for 24 weeks.
Sofosbuvir+PEG+RBVEXPERIMENTAL -
SOF/VEL/VOXEXPERIMENTALFixed dose combination of SOF/VEL/VOX (Sofosbuvir 400mg/Velpatasvir 100mg/ Voxilaprevir 100mg) dosed once daily for 12 weeks.

Interventions

NameTypeDescription
SofosbuvirDRUGSofosbuvir 400 mg tablet administered orally once daily
RBVDRUGRibavirin (RBV) tablets administered orally in a divided daily dose according to package insert weight-based dosing recommendations (\< 75kg = 1000 mg and ≥ 75 kg = 1200 mg)
PEGDRUGPegylated interferon alfa-2a (PEG) 180 μg administered once weekly by subcutaneous injection
Sofosbuvir/Velpatasvir/VoxilaprevirDRUG -
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites24

Inclusion Criteria: * Age ≥ 18 years with HIV-1 and chronic HCV genotype 1, 2, 3, or 4 co-infection * HCV RNA \> 10,000 IU/mL at screening * HCV treatment history: * Treatment-naive for HCV genotypes 1, 2, 3, or 4, or * Treatment-experienced for HCV genotypes 2 or 3 * HIV antiretroviral (ARV) ...

Countries:AustraliaFranceGermanyItalySpainUnited KingdomUnited StatesPuerto Rico
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Frequently asked questions about Sofosbuvir/Velpatasvir/Voxilaprevir

What is Sofosbuvir used for?

Sofosbuvir is an investigational small molecule being developed for the treatment of chronic Hepatitis C virus (HCV) infection, including genotypes 1, 3, 4, 5, and 6, as well as Hepatitis B. It is studied in combination with other antiviral agents such as ribavirin and pegylated interferon.

What does Sofosbuvir target?

Sofosbuvir is a nucleotide analog inhibitor of the HCV NS5B RNA-dependent RNA polymerase, which is essential for viral replication. By targeting this enzyme, sofosbuvir interferes with the Hepatitis C virus's ability to multiply, thereby reducing viral load in infected patients.

Who makes Sofosbuvir?

Sofosbuvir is developed by Gilead Sciences, Inc., a biopharmaceutical company traded on NASDAQ under the ticker symbol GILD. Gilead is responsible for the clinical development and regulatory strategy for this compound across multiple Hepatitis C indications.

What phase is Sofosbuvir in?

Sofosbuvir is in Phase 3 clinical development for chronic Hepatitis C virus infection. It has completed five clinical trials, including Phase 2 and Phase 3 studies, with a total enrollment of 825 participants. Sofosbuvir is not yet approved and remains an investigational drug.

What clinical trials is Sofosbuvir in?

Sofosbuvir has completed several clinical trials, including NCT01329978, a Phase 2 study in HCV genotypes 1, 4, 5, and 6; NCT01435044, a Phase 2 safety study; NCT02021643, a Phase 3 trial in chronic HCV; and NCT02074514, a Phase 3 study in treatment-naive adults with genotype 1 or 3 HCV.

Is Sofosbuvir the same as Sovaldi?

Sofosbuvir is the generic name for the drug also known as Sovaldi, which is a brand name used by Gilead Sciences. In clinical trials and regulatory documents, the compound is referred to as sofosbuvir, while Sovaldi is the commercial name under which it is marketed.