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Showing 1–24 of 27 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: PSI-7977 Clear all
Completed Phase 1 Interventional

Open-Label Hepatic Impairment Study

NCT01497327
View directory record Official record
Conditions
Hepatitis C
Interventions
PSI-352938, PSI-7977
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 7, 2012 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Sofosbuvir Plus Velpatasvir With or Without Ribavirin in Treatment-experienced Subjects With Chronic HCV Infection

NCT01909804
View directory record Official record
Conditions
Hepatitis C
Interventions
SOF, VEL, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
323 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
40
States / cities
Long Beach, California • Los Angeles, California • Pasadena, California + 37 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2018 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Sofosbuvir and Ribavirin in Adults With Recurrent Chronic Hepatitis C Virus (HCV) Post Liver Transplant

NCT01687270
View directory record Official record
Conditions
Recurrent Chronic Hepatitis C Virus, Post Liver Transplant
Interventions
Sofosbuvir, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
8
States / cities
San Francisco, California • Indianapolis, Indiana • Kansas City, Kansas + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 18, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 3 Interventional Results available

Sofosbuvir With Peginterferon Alfa 2a and Ribavirin for 12 Weeks in Treatment-Naive Subjects With Chronic Genotype 1, 4, 5, or 6 HCV Infection

NCT01641640
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Sofosbuvir, RBV, PEG
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
328 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
55
States / cities
Birmingham, Alabama • Coronado, California • Los Angeles, California + 43 more
Source: ClinicalTrials.gov public record
Updated May 7, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety of Ledipasvir/Sofosbuvir Fixed-Dose Combination and Sofosbuvir + Ribavirin for Subjects With Chronic Hepatitis C Virus (HCV) and Inherited Bleeding Disorders

NCT02120300
View directory record Official record
Conditions
Chronic HCV Infection
Interventions
LDV/SOF, SOF, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
13
States / cities
Sacramento, California • San Diego, California • San Francisco, California + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2016 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 3 Interventional Results available

Phase 3 Study of Sofosbuvir and Ribavirin

NCT01497366
View directory record Official record
Conditions
Hepatitis C
Interventions
Sofosbuvir, PEG, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
527 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
67
States / cities
Birmingham, Alabama • Montgomery, Alabama • Bakersfield, California + 55 more
Source: ClinicalTrials.gov public record
Updated Apr 1, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 3 Interventional Results available

Comparison of Sofosbuvir/Velpatasvir Fixed Dose Combination for 12 Weeks With Sofosbuvir and Ribavirin for 24 Weeks in Adults With Chronic Genotype 3 HCV Infection

NCT02201953
View directory record Official record
Conditions
Hepatitis C Virus Infection
Interventions
SOF/VEL, SOF, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
558 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
25
States / cities
Los Angeles, California • Sacramento, California • San Diego, California + 21 more
Source: ClinicalTrials.gov public record
Updated Nov 15, 2018 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 3 Interventional Results available

SOF (Sovaldi®) +RBV for 16 or 24 Weeks and SOF+RBV+Peg-IFN for 12 Weeks in Adults With Genotype 2 or 3 Chronic HCV Infection

NCT01962441
View directory record Official record
Conditions
Hepatitis C
Interventions
SOF, RBV, Peg-IFN
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
601 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
23
States / cities
Riverside, California • San Diego, California • San Francisco, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 19, 2017 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Sofosbuvir (GS-7977) in Combination With PEG and Ribavirin for 12 Weeks in Treatment Experienced Subjects With Chronic HCV Infection Genotype 2 or 3

NCT01808248
View directory record Official record
Conditions
Hepatitis C
Interventions
SOF, PEG, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Sep 11, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Sofosbuvir Plus Ribavirin in Chronic Genotype 1, 2 and 3 Hepatitis C Virus (HCV) and Human Immunodeficiency Virus (HIV) Co-infected Adults

NCT01667731
View directory record Official record
Conditions
Hepatitis C, Human Immunodeficiency Virus
Interventions
SOF, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
26
States / cities
Birmingham, Alabama • Coronado, California • Los Angeles, California + 23 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 3 Interventional Results available

Open-Label Study of Sofusbuvir+Ribavirin With or Without Peginterferon Alfa-2a in Subjects With Chronic HCV Infection Who Participated in Prior Gilead HCV Studies

NCT01625338
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
SOF, RBV, Peg-IFN
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
534 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
67
States / cities
Birmingham, Alabama • Bakersfield, California • Colton, California + 53 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2015 · Synced Sep 2, 2026, 5:01 PM EDT
Terminated No phase listed Observational

A Registry for Adolescent and Pediatric Participants Who Received a Gilead Hepatitis C Virus Direct Acting Antiviral (DAA) in Gilead-Sponsored Chronic Hepatitis C Infection Trials

NCT02510300
View directory record Official record
Conditions
Hepatitis C Virus Infection
Interventions
Sofosbuvir (SOF), Ledipasvir/Sofosbuvir (LDV/SOF), Sofosbuvir/Velpatasvir (SOF/VEL), Sofosbuvir/Velpatasvir/Voxilaprevir (SOF/VEL/VOX)
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
3 Years and older
Enrollment
461 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
27
States / cities
Phoenix, Arizona • Los Angeles, California • San Francisco, California + 24 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2023 · Synced Sep 2, 2026, 5:01 PM EDT
Terminated No phase listed Observational Results available

A Registry for Participants With Cirrhosis Who Achieve a Sustained Virologic Response Following Treatment With a Sofosbuvir-Based Regimen Without Interferon for Chronic Hepatitis C Infection

NCT02292706
View directory record Official record
Conditions
Hepatitis C Virus Infection
Interventions
Sofosbuvir, Ribavirin, LDV/SOF, SOF/VEL, SOF/VEL/VOX, Other SOF-Based Regimen, Ineligible parent treatment
Drug · Other
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
1,609 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
77
States / cities
Birmingham, Alabama • La Jolla, California • Long Beach, California + 57 more
Source: ClinicalTrials.gov public record
Updated Oct 3, 2023 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional

Simeprevir in Combination With Sofosbuvir in Treatment-Naïve or -Experienced Adults With Chronic Genotype 4 Hepatitis C Virus Infection

NCT02253550
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Simeprevir, Sofosbuvir
Drug
Lead sponsor
Peter J. Ruane, M.D.
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 23, 2016 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 4 Interventional Results available

Efficacy and Safety of Sofosbuvir+Ribavirin in Genotype 2 HCV-infected U.S. Veterans With Cirrhosis

NCT02128542
View directory record Official record
Conditions
Hepatitis C Virus Infection
Interventions
Sofosbuvir, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
17
States / cities
Long Beach, California • Los Angeles, California • Palo Alto, California + 14 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2016 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Sofosbuvir With Pegylated Interferon and Ribavirin Hepatitis C Virus (HCV) Genotypes 1,4,5,6

NCT01329978
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Sofosbuvir, RBV, PEG
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
332 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
44
States / cities
Montgomery, Alabama • Jonesboro, Arkansas • Anaheim, California + 36 more
Source: ClinicalTrials.gov public record
Updated May 25, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 3 Interventional Results available

Comparison of Sofosbuvir/Velpatasvir Fixed Dose Combination for 12 Weeks With Sofosbuvir and Ribavirin for 12 Weeks in Adults With Chronic Genotype 2 HCV Infection

NCT02220998
View directory record Official record
Conditions
Hepatitis C Virus Infection
Interventions
SOF/VEL, SOF, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
269 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
50
States / cities
Long Beach, California • Los Angeles, California • Palo Alto, California + 35 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2018 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional

Safety Study of Regimens of Sofosbuvir, GS-0938, and Ribavirin in Patients With Chronic Hepatitis C Infection

NCT01435044
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Sofosbuvir, GS-0938, RBV, Placebo to match sofosbuvir, Placebo to match GS-0938
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
239 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
42
States / cities
Montgomery, Alabama • Bakersfield, California • Coronado, California + 33 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Efficacy of Sofosbuvir With Ribavirin Administered Pre-Transplant in Preventing Hepatitis C Virus (HCV) Recurrence Post-Transplant

NCT01559844
View directory record Official record
Conditions
Hepatitis C, Hepatocellular Carcinoma
Interventions
Sofosbuvir, Ribavirin
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
13
States / cities
Los Angeles, California • San Diego, California • San Francisco, California + 10 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2016 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Study to Determine the Safety and Effectiveness of Antiviral Combination Therapy to Treat Hepatitis C Virus (HCV) in Patients Who Have Previously Not Received the Standard of Care

NCT01359644
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
PSI-7977, Daclatasvir, Ribavirin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 70 Years
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
17
States / cities
Coronado, California • San Diego, California • Aurora, Colorado + 13 more
Source: ClinicalTrials.gov public record
Updated Oct 22, 2015 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Sofosbuvir Plus Ribavirin in Treatment-Naive and Treatment-Experienced Egyptian Adults With Chronic Genotype 4 Hepatitis C Virus (HCV) Infection

NCT01713283
View directory record Official record
Conditions
Hepatitis C Virus
Interventions
SOF, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 24, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Sofosbuvir + Velpatasvir With or Without Ribavirin in Treatment-Naive Adults With Chronic HCV Infection

NCT01858766
View directory record Official record
Conditions
Hepatitis C
Interventions
SOF, VEL, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
379 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
50
States / cities
La Jolla, California • Long Beach, California • Los Angeles, California + 38 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2018 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Dose-Ranging Study of Sofosbuvir in Combination With Pegylated Interferon and Ribavirin in Treatment Naïve GT 1 HCV Patients

NCT01054729
View directory record Official record
Conditions
Hepatitis C
Interventions
Sofosbuvir, Placebo, PEG, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
6
States / cities
San Francisco, California • Gainesville, Florida • Orlando, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2014 · Synced Sep 2, 2026, 5:01 PM EDT
Completed Phase 2 Interventional Results available

Sofosbuvir in Combination With Pegylated Interferon and Ribavirin and in Treatment-Naive Hepatitis C-infected Patients

NCT01188772
View directory record Official record
Conditions
Hepatitis C Virus
Interventions
Sofosbuvir, Placebo to match sofosbuvir, PEG, RBV
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 70 Years
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
22
States / cities
Montgomery, Alabama • Anaheim, California • Coronado, California + 17 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2014 · Synced Sep 2, 2026, 5:01 PM EDT