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Sofosbuvir

Phase 3

Chronic HCV Infection | Small molecule | Infectious Disease |Gilead Sciences, Inc.|Last Updated: Sep 20, 2021

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials2
Total Enrollment804

FDA Designations

No designations recorded

Clinical trial landscape

Sofosbuvir · 13 trials · 11 indications

Phase 3 4Phase 2 9
NCT02074514Safety and Efficacy of Sofosbuvir Plus Ribavirin in Treatment-Naive Adults With Chronic Genotype 1 or 3 HCV InfectionChronic HCV Infection
COMPLETED117 Analytics
NCT02021643Efficacy and Safety of Sofosbuvir Plus Ribavirin in Adults With Chronic HCV InfectionChronic HCV Infection
COMPLETED687 Analytics
NCT01910636Efficacy and Safety of Sofosbuvir Plus Ribavirin in Japanese Adults With Chronic Genotype 2 HCV InfectionHepatitis C
COMPLETED153 Analytics
NCT01497366Phase 3 Study of Sofosbuvir and RibavirinHepatitis C
COMPLETED527 Analytics
PHASE3COMPLETED
Safety and Efficacy of Sofosbuvir Plus Ribavirin in Treatment-Naive Adults With Chronic Genotype 1 or 3 HCV Infection
Chronic HCV InfectionUnlock trial analytics
PHASE3COMPLETED
Efficacy and Safety of Sofosbuvir Plus Ribavirin in Adults With Chronic HCV Infection
Chronic HCV InfectionUnlock trial analytics
PHASE3COMPLETED
Efficacy and Safety of Sofosbuvir Plus Ribavirin in Japanese Adults With Chronic Genotype 2 HCV Infection
Hepatitis CUnlock trial analytics
PHASE3COMPLETED
Phase 3 Study of Sofosbuvir and Ribavirin
Hepatitis CUnlock trial analytics

Study Endpoints

Primary Endpoints

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

SVR12 was defined as HCV RNA \< the lower limit of quantitation (LLOQ; ie, 15 IU/mL) 12 weeks following the last dose of study drug.

Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event
Up to 24 weeks
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) at 12 weeks after stopping study treatment.

Incidence of Adverse Events Leading to Permanent Discontinuation of Study Drug(s)
Up to 12 weeks

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

Percentage of Participants With Sustained Virologic Response 12 Weeks After Stopping All Study Drugs (SVR12)
Post-treatment Week 12

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

Proportion of subjects with sustained virological response (undetectable HCV RNA) 12 weeks after discontinuation of therapy
12 weeks after discontinuation of therapy

Measured by the portion of subjects with sustained virological response (undetectable HCV RNA)

Change of Serum Hepatitis B Surface Antigen (HBsAg as Measured in log10 IU/mL) Level as an Indicator of Antiviral Activity of Ledipasvir and/or Sofosbuvir in Subjects With Chronic Hepatitis B From Baseline to End of 12 Weeks Treatment.
12 weeks

Subjects with chronic hepatitis B will be give 12 weeks of ledipasvir and/or sofosbuvir and their HBsAg will be measured at baseline, on each visits during therapy, and at end of therapy (week 12). The change (decline) in HBsAg from baseline to end of the 12 week treatment will be compared.

Incidence of Adverse Events Leading to Permanent Discontinuation of Ledipasvir and/or Sofosbuvir Treatment in Subjects With Chronic Hepatitis B Infection.
12 Weeks

Number of subjects who discontinued study drug due to adverse event

Proportion of subjects who become HEV RNA negative after 24 weeks of therapy
after 24 weeks of therapy

Measured by the proportion of subjects who become HEV RNA negative (HEV RNA undetectable)

Percentage of Participants Who Discontinue Study Drug Due to an Adverse Event
Baseline to Week 24
Percentage of Participants With Posttransplant Virologic Response (pTVR) at Posttransplant Week 12
Posttransplant Week 12

pTVR was defined as HCV RNA \< the lower limit of quantification (LLOQ, ie, 25 mL/IU) at Week 12 after transplant.

Percentage of Participants Experiencing Any Adverse Event Leading to Permanent Discontinuation of Sofosbuvir Prior to Receiving Transplant
Up to 48 weeks prior to transplant
Percentage of Participants With Graft Loss Following Transplant
Up to 48 weeks following transplant
Number of Participants Who Died
Up to 48 weeks following transplant

* Treatment-emergent deaths were those that occurred while taking study drug or to the minimum of 1) date of transplantation, 2) retreatment 1st dose date, or 3) last dose date + 30 days. * Only those participants who underwent liver transplantation were analyzed for death post-transplantation.

Percentage of participants with sustained virologic response (SVR) 12 weeks after discontinuation of study drug (SVR12)
Post-treatment Week 12

SVR12 was defined as HCV RNA \< LLOQ 12 weeks after the last dose of all study drugs.

Percentage of Participants With Sustained Virologic Response 24 Weeks Following Completion of Treatment (SVR24)
Post-treatment Week 24

SVR24 was defined as HCV RNA \< the limit of detection (LOD; \< 15 IU/mL) 24 weeks after the last dose of study drug.

Percentage of Participants Who Experienced Adverse Events
Baseline (Day 1) to post-treatment Day 30

Adverse events (AEs) occurring from baseline (Day 1 for all groups) to 30 days following the last dose of study drug were summarized across the participant population. A participant was counted once if they had a qualifying event.

Percentage of Participants Who Experienced Adverse Events During the Sofosbuvir Treatment Period
Baseline to Week 12 plus 30 days

Adverse events (AEs) occurring during the sofosbuvir treatment period and for 30 days following the last dose of sofosbuvir were summarized across the participant population. A participant was counted once if they had a qualifying event.

Secondary Endpoints

Percentage of Participants With Sustained Virologic Response (SVR) at 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)
Posttreatment Weeks 4 and 24
Percentage of Participants With Virologic Failure and Viral Relapse
Up to Posttreatment Week 24
Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)
Posttreatment Weeks 4 and 24
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Sofosbuvir+RBV 16 weeksEXPERIMENTALParticipants with HCV genotypes 1 and 3 will receive sofosbuvir plus ribavirin for 16 weeks.
Sofosbuvir+RBV 24 weeksEXPERIMENTALParticipants with HCV genotypes 1 and 3 will receive sofosbuvir plus ribavirin for 24 weeks.
Sofosbuvir+RBV+PEG 12 weeksEXPERIMENTALParticipants with genotype 1 or 6 will receive sofosbuvir+RBV+Peg-IFNα-2a for 12 weeks.
Sofosbuvir+RBV 12 weeksEXPERIMENTALParticipants with genotype 1, 2 or 6 will receive sofosbuvir+RBV for 12 weeks.
Sofosbuvir+RBVEXPERIMENTALParticipants were randomized to receive sofosbuvir+RBV for 12 weeks.
PEG+RBVACTIVE_COMPARATORParticipants were randomized to receive PEG+RBV for 24 weeks.
Sofosbuvir and VelpatasvirEXPERIMENTALSOF/VEL FDC film-coated tablet, oral, SOF 400 mg/VEL 100 mg daily, 8 weeks
Group A (LDV/SOF for low replicative HBV)EXPERIMENTAL12 week treatment with ledipasvir/sofosbuvir (Harvoni) for chronic hepatitis B in low replicative state.
Group B (LDV/SOF for viral suppressed HBV)EXPERIMENTAL12 week treatment with ledipasvir/sofosbuvir (Harvoni) for chronic hepatitis B, virally suppressed.
Group C (SOF for low replicative HBV)EXPERIMENTAL12 weeks treatment with sofosbuvir (Sovaldi) for chronic hepatitis B in low replicative state. Randomized 1:1 with Group D.
Group D (LDV for low replicative HBV)EXPERIMENTAL12 weeks treatment with ledipasvir for chronic hepatitis B in low replicative state. Randomized 1:1 with Group C.
SofosbuvirEXPERIMENTALSofosbuvir 400 MG film-coated tablet, oral administration of one tablet once daily for 24 weeks.
SOF+RBVEXPERIMENTALParticipants will receive sofosbuvir+RBV for 24 weeks.
SOF+RBV 12 WeeksEXPERIMENTALParticipants were randomized to receive sofosbuvir plus RBV plus placebo to match GS-0938 for 12 weeks.
SOF+RBV 24 WeeksEXPERIMENTALParticipants were randomized to receive sofosbuvir plus RBV plus placebo to match GS-0938 for 24 weeks.
GS-0938 AloneEXPERIMENTALParticipants were randomized to receive GS-0938 plus placebo to match sofosbuvir for up to 24 weeks.
GS-0938+SOFEXPERIMENTALParticipants were randomized to receive GS-0938 plus sofosbuvir for up to 24 weeks.
GS-0938+SOF+RBVEXPERIMENTALParticipants were randomized to receive GS-0938 plus sofosbuvir plus RBV for up to 24 weeks.
PlaceboEXPERIMENTALDeferred start group: Participants were randomized to receive placebo to match GS-0938 plus placebo to match sofosbuvir for 24 Weeks.
Retreatment Group - SOF+RBV 24 WeeksEXPERIMENTALAfter discontinuing a regimen containing GS-0938, participants received sofosbuvir plus RBV for up to 24 weeks.
SOF+PEG+RBV 12 weeksEXPERIMENTALParticipants were randomized to receive sofosbuvir+PEG+RBV for 12 weeks.
SOF+PEG+RBV 24 weeksEXPERIMENTALParticipants were randomized to receive sofosbuvir+PEG+RBV for 24 weeks.
SOF+PEG+RBV 12 week/Rerandomization GroupEXPERIMENTALParticipants were randomized to receive sofosbuvir+PEG+RBV for 12 weeks, then were rerandomized to receive sofosbuvir only or sofosbuvir+RBV for 12 additional weeks.
Sofosbuvir 200 mg (Genotype 1)EXPERIMENTALParticipants with genotype 1 HCV infection were randomized to receive sofosbuvir 200 mg (2 x 100 mg tablets)+placebo to match sofosbuvir (2 tablets)+PEG+RBV for 12 weeks followed by PEG+RBV for up to an additional 36 weeks.
Sofosbuvir 400 mg (Genotype 1)EXPERIMENTALParticipants with genotype 1 HCV infection were randomized to receive sofosbuvir 400 mg (4 x 100 mg tablets)+PEG+RBV for 12 weeks followed by PEG+RBV for up to an additional 36 weeks.
Placebo (Genotype 1)ACTIVE_COMPARATORParticipants with genotype 1 HCV infection were randomized to receive placebo to match sofosbuvir (4 tablets)+PEG+RBV for 12 weeks followed by PEG+RBV for up to an additional 36 weeks.
Sofosbuvir 400 mg (Genotype 2/3)EXPERIMENTALParticipants with genotype 2 or 3 HCV infection received sofosbuvir 400 mg (4 x 100 mg tablets)+PEG+RBV for 12 weeks.
Sofosbuvir 100 mg+PEG+RBVEXPERIMENTALParticipants received sofosbuvir 100 mg (1 x 100 mg tablet) and placebo to match sofosbuvir (3 tablets) for 28 days (baseline to Day 28), plus PEG+RBV (baseline to Week 48)
Sofosbuvir 200 mg+PEG+RBVEXPERIMENTALParticipants received sofosbuvir 200 mg (2 x 100 mg tablets) and placebo to match sofosbuvir (2 tablets) for 28 days (baseline to Day 28), plus PEG+RBV (baseline to Week 48)
Sofosbuvir 400 mg+PEG+RBVEXPERIMENTALParticipants received sofosbuvir 400 mg (4 x 100 mg tablets) for 28 days (baseline to Day 28), plus PEG+RBV (baseline to Week 48)
Placebo+PEG+RBVACTIVE_COMPARATORParticipants received placebo to match sofosbuvir (4 tablets) for 28 days (baseline to Day 28), plus PEG+RBV (baseline to Week 48)

Interventions

NameTypeDescription
SofosbuvirDRUG400 mg tablet administered orally once daily
RBVDRUG200 mg 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)
PEGDRUGPegylated interferon alfa-2a (Peg-IFNα-2a) 180 µg/0.5 mL pre-filled syringe administered subcutaneously once a week
Sofosbuvir and VelpatasvirDRUGAll subjects will receive one film-coated tablet of sofosbuvir/velpatasvir (400/100 mg) orally once daily for 8 weeks.
Ledipasvir 90 MG / Sofosbuvir 400 MG Oral Tablet [Harvoni]DRUG1 pill once daily for 12 weeks for Group A
Sofosbuvir 400 MG [Sovaldi]DRUG1 pill once daily for 12 weeks for Group C
Ledipasvir 90 MGDRUG1 pill once daily for 12 weeks for Group D
RibavirinDRUGRibavirin (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)
GS-0938DRUGGS-0938 300 mg (3 × 100 mg tablets) administered orally once daily
Placebo to match sofosbuvirDRUGPlacebo to match sofosbuvir administered orally once daily
Placebo to match GS-0938DRUGPlacebo to match GS-0938 administered orally once daily
PlaceboDRUGPlacebo to match sofosbuvir administered orally once daily
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites13

Inclusion Criteria: * HCV RNA ≥10\^4 IU/mL at screening * Confirmed chronic HCV genotype 1 or 3 infection * HCV treatment naive * Approximately 30% of individuals may have compensated cirrhosis at screening Exclusion Criteria: * Any other chronic liver disease * Infection with hepatitis B virus (...

Countries:IndiaChinaHong KongSouth KoreaTaiwanVietnamJapanUnited StatesAustraliaCanadaItalyNetherlandsNew ZealandPuerto RicoSwedenGermanyFranceSpain
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Frequently asked questions about Sofosbuvir

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.