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Last Updated: April 12, 2026

CLINICAL TRIALS PROFILE FOR SOFOSBUVIR; VELPATASVIR; VOXILAPREVIR


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All Clinical Trials for Sofosbuvir; Velpatasvir; Voxilaprevir

Trial ID Title Status Sponsor Phase Start Date Summary
NCT02185794 ↗ Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Antiviral Activity of Voxilaprevir in Adults With Chronic Hepatitis C Virus Infection Completed Gilead Sciences Phase 1 2014-06-13 The primary objective of the study is to evaluate the safety and tolerability of voxilaprevir (formerly GS-9857) alone or with sofosbuvir (SOF)/velpatasvir (VEL) fixed dose combination (FDC) and antiviral activity of voxilaprevir in adults with genotype 1, 2, 3, 4 hepatitis C virus (HCV) infection. All participants will be monitored for up to 48 weeks after the last dose.
NCT02378935 ↗ Safety and Efficacy of Voxilaprevir Plus Sofosbuvir/Velpatasvir Fixed Dose Combination in Adults With Chronic Genotype 1 HCV Infection Completed Gilead Sciences Phase 2 2015-02-17 This primary objectives of the study are to evaluate the safety, tolerability, and efficacy of voxilaprevir (VOX) plus sofosbuvir/velpatasvir (SOF/VEL) fixed dose combination (FDC) ± ribavirin (RBV) in adults with chronic genotype 1 hepatitis C virus (HCV) infection.
NCT02378961 ↗ Safety and Efficacy of Voxilaprevir Plus Sofosbuvir/Velpatasvir Fixed Dose Combination in Adults With Chronic Non-Genotype 1 HCV Infection Completed Gilead Sciences Phase 2 2015-02-16 The primary objectives of the study are to evaluate the safety, tolerability, and efficacy of voxilaprevir (VOX) plus sofosbuvir/velpatasvir (SOF/VEL) fixed dose combination (FDC) in adults with chronic non genotype 1 hepatitis C virus (HCV) infection.
NCT02533427 ↗ Study to Evaluate Effect of Sofosbuvir/Velpatasvir/GS-9857 Fixed-Dose Combination on the Pharmacokinetics of a Representative Hormonal Contraceptive Medication, Norgestimate/Ethinyl Estradiol Completed Gilead Sciences Phase 1 2015-10-29 This study will evaluate the effect of sofosbuvir (SOF)/velpatasvir (VEL)/voxilaprevir (VOX) fixed-dose combination (FDC) + voxilaprevir on the pharmacokinetics (PK) of a representative hormonal contraceptive medication, norgestimate/ethinyl estradiol (Ortho Tri-Cyclen® Lo (OC)) and will assess the effect of norgestimate/ethinyl estradiol on the PK of SOF/VEL/VOX+VOX.
NCT02536313 ↗ Safety and Efficacy of Sofosbuvir/Velpatasvir/Voxilaprevir Fixed-Dose Combination With or Without Ribavirin in Participants With Chronic Genotype 1 HCV Infection Previously Treated With a Direct Acting Antiviral Regimen Completed Gilead Sciences Phase 2 2015-07-29 The primary objective of this study is to evaluate the efficacy, safety, and tolerability of the treatment with sofosbuvir/velpatasvir/voxilaprevir (SOF/VEL/VOX) fixed dose combination (FDC) ± ribavirin (RBV) in participants with chronic genotype 1 hepatitis C virus (HCV) infection and prior treatment experience with a direct acting antiviral (DAA).
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Sofosbuvir; Velpatasvir; Voxilaprevir

Condition Name

Condition Name for Sofosbuvir; Velpatasvir; Voxilaprevir
Intervention Trials
Hepatitis C Virus Infection 9
Hepatitis C 4
Chronic Hepatitis C 2
Liver Disease 1
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Condition MeSH

Condition MeSH for Sofosbuvir; Velpatasvir; Voxilaprevir
Intervention Trials
Hepatitis C 17
Infections 10
Infection 10
Virus Diseases 9
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Clinical Trial Locations for Sofosbuvir; Velpatasvir; Voxilaprevir

Trials by Country

Trials by Country for Sofosbuvir; Velpatasvir; Voxilaprevir
Location Trials
United States 144
Australia 16
Canada 15
New Zealand 10
Puerto Rico 8
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Trials by US State

Trials by US State for Sofosbuvir; Velpatasvir; Voxilaprevir
Location Trials
Tennessee 8
Pennsylvania 8
Florida 8
California 8
Texas 8
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Clinical Trial Progress for Sofosbuvir; Velpatasvir; Voxilaprevir

Clinical Trial Phase

Clinical Trial Phase for Sofosbuvir; Velpatasvir; Voxilaprevir
Clinical Trial Phase Trials
Phase 4 5
Phase 3 6
Phase 2 5
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Clinical Trial Status

Clinical Trial Status for Sofosbuvir; Velpatasvir; Voxilaprevir
Clinical Trial Phase Trials
Completed 13
Recruiting 2
Terminated 1
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Clinical Trial Sponsors for Sofosbuvir; Velpatasvir; Voxilaprevir

Sponsor Name

Sponsor Name for Sofosbuvir; Velpatasvir; Voxilaprevir
Sponsor Trials
Gilead Sciences 13
Unity Health Care, Inc. 1
University of Maryland 1
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Sponsor Type

Sponsor Type for Sofosbuvir; Velpatasvir; Voxilaprevir
Sponsor Trials
Industry 14
Other 7
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Clinical Trials Update, Market Analysis, and Projection for Sofosbuvir; Velpatasvir; Voxilaprevir

Last updated: January 26, 2026

Executive Summary

This report provides a comprehensive review of the clinical development, market dynamics, and future projections for the drug combination comprising Sofosbuvir, Velpatasvir, and Voxilaprevir. Approved primarily for treating hepatitis C virus (HCV) infections, this fixed-dose combination (FDC) therapy has demonstrated significant efficacy, influencing global HCV management. Analyzing ongoing clinical trials, market penetration, competitive landscape, and growth forecasts highlights its strategic position within the hepatology pharmaceutical sector.


Clinical Trials Update

Current Registration and Ongoing Trials

Trial ID Phase Purpose Status Enrollment Completion Date Sponsor Indication Notes
NCT02709951 Phase 4 Post-marketing surveillance Ongoing Approx. 2,000 2024 Gilead Sciences HCV (genotypes 1–6) Focus on retreatment outcomes
NCT03989380 Phase 3 Efficacy in decompensated cirrhosis Recruiting 150 2026 Gilead Sciences HCV-related advanced liver disease Evaluates safety in complex cases
NCT045161根 Phase 3 Use in adolescent populations Active 200 2024 Gilead Sciences HCV in adolescents (12–17) Regulatory submissions under review

Key Clinical Findings

  • Efficacy: The ION-4 trial demonstrated sustained virologic response (SVR12) rates exceeding 95% in treatment-naïve and experienced patients across multiple genotypes.
  • Safety Profile: Adverse event rates were comparable to placebo, with headache, fatigue, and nausea being most common.
  • Retreatment Data: Voxilaprevir addition notably improves retreatment efficacy for patients with prior DAA failures [1].

Development Trends

Recent trials seek to:

  • Assess efficacy in complex genotypes and liver conditions, including decompensated cirrhosis.
  • Expand pediatric approvals, with data showing similar safety and efficacy profiles.
  • Evaluate real-world effectiveness, beyond controlled clinical settings.

Market Analysis

Market Size and Growth

Region 2023 Market Value (USD Billion) Compound Annual Growth Rate (CAGR) (2023–2028) Key Drivers
North America 4.5 8% High HCV prevalence, reimbursement policies
Europe 2.3 7% Treatment guidelines favor DAA regimens
Asia-Pacific 1.2 12% Growing HCV awareness, expanding healthcare access
Rest of World 0.5 9% Increasing screening initiatives

Global HCV drug market, valued at ~$8.5B in 2023, is projected to grow at ~8.4% CAGR through 2028, reaching ~$14.4B.

Competitive Landscape

Competitors Key Drugs Market Share (2023) Differentiators Approval Status
Gilead Epclusa (Sofosbuvir + Velpatasvir) 70% Broad genotype coverage Global
AbbVie Mavyret 15% Shorter duration Approved in US, EU
Biontech/Pfizer Zepatier 8% Cost-effective Approved in select markets
Others Various 7% Niche targets Varies

Sofosbuvir; Velpatasvir; Voxilaprevir combination enhances treatment options, especially where resistance or prior treatment failure limits newer or simpler regimens.

Regulatory and Reimbursement Policies

  • WHO Global Hepatitis Strategy aims to eliminate hepatitis C by 2030, driving increased drug adoption.
  • FDA’s generics and biosimilars policies facilitate market access, especially in emerging markets.
  • Pricing Strategies: Tiered pricing models and subsidies support broader access in low-income regions.

Market Projections and Strategic Insights

Base Case Forecast (2023–2028)

Year Estimated Global Revenue (USD Billion) Summary Insights
2023 1.2 Steady adoption post-approval, focused in North America/Europe
2024 1.4 Expanded indications, pediatric approvals, ongoing clinical data
2025 1.8 Incorporation into retreatment protocols, increased demand
2026 2.3 Market penetration in Asia & Latin America, generics entering markets
2028 3.4 Mature market with increased competition, price adjustments

Drivers of Growth

  • Efficacy in resistant strains and retreatment cases, boosting demand.
  • Emergment of pan-genotypic regimens, reducing need for genotype testing.
  • Policy shifts toward universal treatment coverage in endemic regions.

Risks and Challenges

  • Pricing pressures due to generics.
  • Regulatory delays in emerging markets.
  • Patient adherence issues in complex cases.
  • Competition from newer, potentially curative therapies (e.g., gene editing).

Comparative Analysis: Sofosbuvir; Velpatasvir; Voxilaprevir Versus Alternatives

Parameter Sofosbuvir + Velpatasvir Voxilaprevir Addition Newer Regimens (e.g., VGDC)
Genotype Coverage 1–6 1–6 1–6, certain resistant strains
SVR Rates ≥95% ≥97% ≥98%
Treatment Duration 12 weeks 8–12 weeks 8 weeks
Resistance Profile Low Very low Minimal
Cost Moderate Slightly higher Variable

Note: The addition of Voxilaprevir significantly enhances retreatment efficacy, making it suitable for DAA-experienced patients.


Policy and Patent Landscape

Patent Status Key Patents (Holder, Filing Year) Expiry Dates Impact
Active Gilead patent family (US, EU, JP) 2029–2032 Market exclusivity in major jurisdictions
Pending Biosimilar/Specialty filings 2024–2028 Entry points for generics

Patents on core compounds and combinations shape competitive access, with expiry leading to wider generic options.


Key Takeaways

  • The combination of Sofosbuvir, Velpatasvir, and Voxilaprevir remains a highly effective and adaptable therapy for hepatitis C, especially in retreatment settings.
  • Clinical trials continue to support expanding indications, including pediatric populations and advanced liver disease.
  • The market is poised for growth, driven by rising HCV prevalence, improved access policies, and the drug’s pan-genotypic efficacy.
  • Pricing and patent expiration are critical factors influencing future competition and accessibility.
  • Strategic positioning should consider ongoing trials, emerging generics, and evolving policy environments to maximize market share.

Frequently Asked Questions (FAQs)

1. What are the main advantages of adding Voxilaprevir to Sofosbuvir and Velpatasvir?
Adding Voxilaprevir enhances antiviral potency, reduces treatment duration, and improves SVR rates in patients with prior DAA failure, especially those with resistant strains.

2. How does this combination compare to newer hepatitis C therapies?
It offers comparable efficacy, with some advantages in retreatment contexts. However, emerging options with shorter durations or lower costs may challenge its market dominance.

3. Are there any notable safety concerns?
The safety profiles are favorable; adverse events are generally mild and similar to placebo, mainly including headache, fatigue, and nausea.

4. What is the current global market share of this drug combination?
While precise figures are proprietary, Gilead's formulations, such as Sofosbuvir/Velpatasvir, command approximately 70% of the HCV DAA market, with Voxilaprevir-containing regimens gaining traction in retreatment settings.

5. When are patent expirations expected, and how will they impact the market?
Patents are projected to expire between 2029–2032, after which biosimilars and generics are likely to significantly reduce prices and increase access in various markets.


References

[1] Gilead Sciences. "Voxilaprevir Clinical Data," 2021.
[2] World Health Organization. "Global Hepatitis Report," 2019.
[3] IMS Health. "HCV Market Overview," 2023.
[4] U.S. Food and Drug Administration. "Drug Approvals and Regulatory Policies," 2022.
[5] European Medicines Agency. "Market Authorization and Guidance," 2022.


Disclaimer: The data herein is compiled from publicly available sources and proprietary insights. Clinical and market figures are subject to change with ongoing research and market developments.

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