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ClinicalTrials.gov public records Last synced Oct 10, 2026, 9:15 AM EDT

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Showing 73–96 of 199 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Pegylated interferon alfa-2a Clear all
Completed Phase 2 Interventional

Study to Evaluate Drug-drug Interaction Between Valopicitabine and Ribavirin

NCT00395421
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
NM283 plus Peg-IFNα-2a
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
114 participants
Timeline
2006 – 2008
U.S. locations
2
States / cities
Atlanta, Georgia • Fairfax, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 10, 2010 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 4 Interventional Results available

Low-Dose Peginterferon and Ribavirin to Treat Chronic Hepatitis C in Patients Infected With HCV Genotype 2 or 3

NCT00056862
View directory record Official record
Conditions
Hepatitis C
Interventions
Peginterferon alfa-2a, Ribavirin
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 6, 2013 · Synced Oct 10, 2026, 9:15 AM EDT
Terminated Phase 3 Interventional Results available

A Study to Treat Subjects With Telaprevir, Ribavirin, and Peginterferon Who Are Coinfected With HIV and Hepatitis C Virus (HCV)

NCT01467479
View directory record Official record
Conditions
Hepatitis C
Interventions
Telaprevir, Ribavirin, Pegylated Interferon Alfa-2a, Highly Active Antiretroviral Therapy (HAART)
Drug · Biological
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 65 Years
Enrollment
185 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
46
States / cities
Birmingham, Alabama • Bakersfield, California • Beverly Hills, California + 42 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2015 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 4 Interventional Results available

Impact of Physician Directed Education on Patient Compliance With Hepatitis C Therapy

NCT01405027
View directory record Official record
Conditions
Chronic Hepatitis C, Genotype 1
Interventions
Educational Intervention, Patient education and management skills training
Procedure · Other
Lead sponsor
Chronic Liver Disease Foundation
Other
Eligibility
18 Years and older
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
43
States / cities
Beverly Hills, California • Calabasas, California • Santa Monica, California + 34 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2015 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 3 Interventional Results available

A Study of Pegylated Interferon Alfa-2A in Combination With Lamivudine or Entecavir Compared With Untreated Control Group in Children With Hepatitis B Envelope Antigen (HBeAg)-Positive Chronic Hepatitis B (CHB) in the Immune-Tolerant Phase

NCT02263079
View directory record Official record
Conditions
Pediatric Immuno-Tolerant Chronic Hepatitis B
Interventions
Entecavir, Lamivudine, Pegylated Interferon Alfa-2A
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
3 Years to 17 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
3
States / cities
Kansas City, Missouri • New York, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 24, 2020 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 2 Interventional

Safety Study of Pegylated Interferon Lambda Plus Single or 2 Direct Antiviral Agents With Ribavirin

NCT01795911
View directory record Official record
Conditions
Hepatitis C
Interventions
Pegylated Interferon Lambda, Ribasphere, Daclatasvir
Biological · Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 70 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 9, 2015 · Synced Oct 10, 2026, 9:15 AM 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 17, 2014 · Synced Oct 10, 2026, 9:15 AM EDT
Terminated Phase 3 Interventional Results available

Alisporivir With PEG and RBV in Protease Inhibitor (PI) Treatment Failure Patients With Chronic Hepatitis C

NCT01500772
View directory record Official record
Conditions
Hepatitis C
Interventions
Alisporivir, Peginterferon alfa-2a, Ribavirin
Drug
Lead sponsor
Debiopharm International SA
Industry
Eligibility
18 Years to 70 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
26
States / cities
Phoenix, Arizona • Bakersfield, California • Los Angeles, California + 19 more
Source: ClinicalTrials.gov public record
Updated Aug 1, 2016 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 3 Interventional Results available

An Efficacy, Safety and Tolerability Study of TMC435 in Genotype 1 Hepatitis C-infected Patients Who Relapsed After Previous Therapy

NCT01281839
View directory record Official record
Conditions
Hepatitis C
Interventions
TMC435, Placebo, Peginterferon alpha-2a (PegIFN alpha-2a), Ribavirin (RBV)
Drug
Lead sponsor
Janssen R&D Ireland
Industry
Eligibility
18 Years and older
Enrollment
394 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
11
States / cities
Bakersfield, California • Aurora, Colorado • Jacksonville, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 3 Interventional Results available

VX-950-TiDP24-C219: A Roll Over Trial for Patients in the Control Group of the C216 Study Who Received Telaprevir Placebo

NCT01054573
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Telaprevir, pegylated interferon (Peg-IFN) alfa-2a, ribavirin (RBV)
Drug
Lead sponsor
Janssen Infectious Diseases BVBA
Industry
Eligibility
18 Years to 70 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
14
States / cities
Coronado, California • Los Angeles, California • San Francisco, California + 11 more
Source: ClinicalTrials.gov public record
Updated May 8, 2013 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 2 Interventional

Dose Ranging Study of Pegylated Interferon Lambda in Patients With Hepatitis B and Positive for the Hepatitis B e Antigen

NCT01204762
View directory record Official record
Conditions
Hepatitis B Virus
Interventions
pegIFN, pegIFNα-2a, PegIFN lambda, Entecavir
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 70 Years
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
13
States / cities
Anaheim, California • Garden Grove, California • Sacramento, California + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2015 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 4 Interventional Results available

Pegylated Interferon and Ribavirin to Treat Chronic Hepatitis C With and Without Kidney Disease

NCT00028093
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Peginterferon alfa-2a with Ribavirin, Peginterferon alfa-2a
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 8, 2013 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 4 Interventional

Pegasys and Copegus for Asian Patients With Treatment-naive Hepatitis C Genotypes 6, 7, 8, 9

NCT00575224
View directory record Official record
Conditions
Chronic Hepatitis C, Asian Americans, Novel Genotypes, Treatment
Interventions
Pegylated interferon and ribavirin
Drug
Lead sponsor
Pacific Health Foundation
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
5
States / cities
San Diego, California • San Jose, California • Westminster, California + 2 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2009 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 3 Interventional Results available

VX-950-C211 - A Dosing Regimen Study (Twice Daily Versus Every 8 Hours) of Telaprevir in Treatment-naïve Participants With Genotype 1 Chronic Hepatitis C Virus Infection

NCT01241760
View directory record Official record
Conditions
Genotype 1 Chronic Hepatitis C, Treatment Naive
Interventions
Ribavirin, Telaprevir, Pegylated interferon alfa-2a
Drug
Lead sponsor
Janssen Infectious Diseases BVBA
Industry
Eligibility
18 Years to 70 Years
Enrollment
744 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
37
States / cities
La Jolla, California • Los Angeles, California • San Diego, California + 34 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2014 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Pegasys VR: Integrating Virtual Humans in the Treatment of Child Social Anxiety

NCT02816684
View directory record Official record
Conditions
Anxiety Disorders
Interventions
Pegasys-VR, Social Effectiveness Therapy for Children
Behavioral
Lead sponsor
University of Central Florida
Other
Eligibility
7 Years to 12 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Oct 19, 2018 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 4 Interventional Results available

A Study of PEGASYS (Peginterferon Alfa-2a (40KD)) in Combination With Copegus (Ribavirin) in Patients With Chronic Hepatitis C (CHC) Enrolled in a Methadone Maintenance Treatment Program.

NCT00087594
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
peginterferon alfa-2a [Pegasys], ribavirin
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
7
States / cities
San Francisco, California • Farmington, Connecticut • Honolulu, Hawaii + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2016 · Synced Oct 10, 2026, 9:15 AM EDT
Withdrawn Phase 3 Interventional

Safety and Efficacy Study of Pegylated Interferon Lambda Versus Pegylated Interferon Alfa, Plus Ribavirin in Subjects With Hepatitis C

NCT01447394
View directory record Official record
Conditions
Hepatitis C Virus (HCV)
Interventions
Pegylated Interferon Lambda, Pegylated Interferon Alfa-2a, Ribavirin
Biological · Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
3
States / cities
San Diego, California • Rochester, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 3, 2012 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 2 Interventional

Safety, Tolerability, and Antiviral Activity of 24 or 48 Weeks of GS-9190 in Combination With Peginterferon Alfa 2a and Ribavirin for the Treatment of Genotype-1 Chronic HCV Infection

NCT00743795
View directory record Official record
Conditions
HCV Infection
Interventions
placebo, GS-9190, Peginterferon Alfa 2a, Ribavirin
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 70 Years
Enrollment
252 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
48
States / cities
Anaheim, California • Los Angeles, California • Newport Beach, California + 37 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2013 · Synced Oct 10, 2026, 9:15 AM EDT
Terminated Phase 2 Interventional

GS-5885, GS-9451 With Peginterferon Alfa 2a (PEG) and Ribavirin in Treatment-Naïve Subjects With Chronic Genotype 1 Hep C Virus Infection and IL28B CC Genotype

NCT01384383
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
GS-5885, GS-9451, RBV, PEG
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 70 Years
Enrollment
248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
26
States / cities
Los Angeles, California • Sacramento, California • San Diego, California + 20 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2014 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 3 Interventional

Thymosin Plus PEG-Interferon in Hepatitis C Patients With Cirrhosis Who Did Not Respond to Interferon or Interferon Plus Ribavirin

NCT00039962
View directory record Official record
Conditions
Hepatitis C, Hepatitis C, Chronic
Interventions
thymalfasin (thymosin alpha 1), PEGinterferon alfa-2a
Drug
Lead sponsor
SciClone Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2002
U.S. locations
54
States / cities
Mobile, Alabama • Scottsdale, Arizona • Anaheim, California + 43 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2008 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 3 Interventional

Efficacy and Safety Study of Pegasys in the Treatment of Chronic Hepatitis B

NCT00048945
View directory record Official record
Conditions
Chronic Hepatitis B
Interventions
PEGASYS
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
820 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2004
U.S. locations
15
States / cities
Scottsdale, Arizona • Downey, California • Los Angeles, California + 12 more
Source: ClinicalTrials.gov public record
Updated Feb 17, 2017 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 2 Interventional Results available

A Safety and Effectiveness Study of TMC435 in Chronic, Genotype 1, Hepatitis C Patients Who Failed to Previous Standard Treatment

NCT00980330
View directory record Official record
Conditions
Hepatitis C
Interventions
TMC435, Placebo, Peg-IFN-alfa-2a (P), Ribavirin (R)
Drug
Lead sponsor
Tibotec Pharmaceuticals, Ireland
Industry
Eligibility
18 Years to 70 Years
Enrollment
463 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
17
States / cities
La Jolla, California • Los Angeles, California • Jacksonville, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2014 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 2 Interventional Results available

New Treatment Response in People With and Without Cirrhosis From Chronic Hepatitis C

NCT01888900
View directory record Official record
Conditions
Cirrhosis, Chronic Hepatitis C, Hepatitis C, Hepatitis C, Chronic
Interventions
DUAL, QUAD
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 7, 2017 · Synced Oct 10, 2026, 9:15 AM EDT
Completed Phase 2 Interventional Results available

Study of Nitazoxanide, Peginterferon Alfa-2a and Ribavirin for the Treatment of Hepatitis C

NCT00495391
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Nitazoxanide, Placebo, Peginterferon alfa-2a, Ribavirin
Drug · Biological
Lead sponsor
Romark Laboratories L.C.
Industry
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
10
States / cities
Palo Alto, California • Stanford, California • New Haven, Connecticut + 7 more
Source: ClinicalTrials.gov public record
Updated May 8, 2014 · Synced Oct 10, 2026, 9:15 AM EDT