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ClinicalTrials.gov public records Last synced Sep 16, 2026, 5:55 PM EDT

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Showing 1–24 of 200 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Peg-interferon alfa-2a Clear all
Completed Phase 2 Interventional Results available

Study of Daclatasvir (BMS-790052) Add-on to Standard of Care in Treatment- naïve Patients

NCT01125189
View directory record Official record
Conditions
Hepatitis C Virus
Interventions
Daclatasvir, Placebo, peg-interferon alfa-2a, ribavirin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 70 Years
Enrollment
558 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
33
States / cities
Montgomery, Alabama • La Jolla, California • Los Angeles, California + 26 more
Source: ClinicalTrials.gov public record
Updated Oct 22, 2015 · Synced Sep 16, 2026, 5:55 PM EDT
Not listed Phase 1Phase 2 Interventional

Gefitinib and PEG-Interferon Alfa-2a in Treating Patients With Unresectable or Metastatic Skin Cancer

NCT00423397
View directory record Official record
Conditions
Non-melanomatous Skin Cancer
Interventions
PEG-interferon alfa-2a, gefitinib
Biological · Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Dec 18, 2013 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 3 Interventional

Study of the Efficacy and Safety of Lonafarnib / Ritonavir With and Without Pegylated Interferon -Alfa-2a

NCT03719313
View directory record Official record
Conditions
Hepatitis Delta Virus
Interventions
Lonafarnib, Ritonavir, PEG IFN-alfa-2a, Placebo Lonafarnib, Placebo Ritonavir
Drug
Lead sponsor
Eiger BioPharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
407 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
18
States / cities
Fresno, California • Los Angeles, California • Palo Alto, California + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 13, 2023 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 3 Interventional Results available

Entecavir/Pegylated Interferon in Immune Tolerant Children With Chronic Hepatitis B Virus (HBV) Infection

NCT01368497
View directory record Official record
Conditions
Hepatitis B
Interventions
Entecavir and peginterferon
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
3 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
6
States / cities
San Francisco, California • Baltimore, Maryland • Minneapolis, Minnesota + 3 more
Source: ClinicalTrials.gov public record
Updated May 25, 2022 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 2 Interventional

A Study of Mericitabine in Combination With Boceprevir and Pegasys/Copegus in Patients With Chronic Hepatitis C

NCT01482403
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Copegus, Pegasys, boceprevir, mericitabine, mericitabine placebo, boceprevir placebo
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
7
States / cities
Littleton, Colorado • Chicago, Illinois • Shreveport, Louisiana + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2016 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 2 Interventional

A Study of Mericitabine in Combination With Telaprevir and Peginterferon Alfa-2a / Ribavirin in Participants With Chronic Hepatitis C

NCT01482390
View directory record Official record
Conditions
Hepatitis C
Interventions
Ribavirin, Mericitabine, Peginterferon Alfa-2a, Placebo, Telaprevir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
15
States / cities
Birmingham, Alabama • Long Beach, California • Sacramento, California + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2017 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 2 Interventional

A Comparison of the Effectiveness, Safety, and Tolerability of Two Different Hepatitis C Treatments in Patients Infected With Both HIV and Hepatitis C Virus (HCV)

NCT00008463
View directory record Official record
Conditions
HIV Infections, Hepatitis C
Interventions
Ribavirin, Interferon alfa-2a, Peginterferon alfa-2a
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2006
U.S. locations
24
States / cities
San Diego, California • San Francisco, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 2 Interventional

Evaluating the Safety of Two Medications to Treat Hepatitis C in People With Thalassemia (The HepC Study)

NCT00502788
View directory record Official record
Conditions
Hepatitis C, Thalassemia
Interventions
Peginterferon Alfa-2a and Ribavirin, Ribavirin
Drug
Lead sponsor
Carelon Research
Other
Eligibility
18 Years to 44 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
3
States / cities
Oakland, California • New York, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 3, 2014 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 2 Interventional Results available

Filibuvir In Treatment Naive Hepatitis C Virus (HCV) Genotype 1 Subjects

NCT00987337
View directory record Official record
Conditions
Hepatitis, Hepatitis C
Interventions
Filibuvir, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
288 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
30
States / cities
Anaheim, California • Coronado, California • La Jolla, California + 22 more
Source: ClinicalTrials.gov public record
Updated Jan 26, 2014 · Synced Sep 16, 2026, 5:55 PM EDT
Terminated Phase 2 Interventional Results available

Pegasys in Patients With Chronic Myeloid Leukemia (CML)

NCT01392170
View directory record Official record
Conditions
Leukemia
Interventions
PEG-IFNá-2a
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
16 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 3, 2015 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 3 Interventional Results available

An Efficacy, Safety, and Tolerability Study of TMC435 in Treatment-naive, Genotype 1 Hepatitis C-infected Participants

NCT01290679
View directory record Official record
Conditions
Hepatitis C
Interventions
Placebo, TMC435, Peginterferon alpha-2a or Peginterferon alpha-2b (PegIFNα-2a/b), Ribavirin (RBV)
Drug
Lead sponsor
Janssen R&D Ireland
Industry
Eligibility
18 Years and older
Enrollment
393 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
11
States / cities
Los Angeles, California • Jacksonville, Florida • Orlando, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2014 · Synced Sep 16, 2026, 5:55 PM EDT
Terminated Phase 3 Interventional Results available

Efficacy of a 12-Week Regimen of Telaprevir, Pegylated Interferon, and Ribavirin in Treatment-Naive and Prior Relapser Subjects With Interleukin28B (IL28B) CC Genotype

NCT01459913
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Telaprevir, Pegylated Interferon Alfa-2a, Ribavirin
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 70 Years
Enrollment
239 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
55
States / cities
Birmingham, Alabama • Phoenix, Arizona • La Jolla, California + 42 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2015 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 2 Interventional Results available

A Study of Debio 025 in Combination With PegIFN Alpha-2a and Ribavirin in Chronic HCV Patients Non-responders to Standard Treatment

NCT00537407
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Debio 025, Peg-IFNα2a, Ribavirin
Drug
Lead sponsor
Debiopharm International SA
Industry
Eligibility
18 Years to 60 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
7
States / cities
La Jolla, California • Gainesville, Florida • Miami, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2016 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 4 Interventional

Study for the Treatment of Significant Steatosis With Xenical Followed by Treatment of Hepatitis C With Pegasys/Copegus

NCT00207311
View directory record Official record
Conditions
Fatty Liver, Hepatitis C
Interventions
Xenical, Pegasys, Copegus, Xenicare Program
Drug · Behavioral
Lead sponsor
Brooke Army Medical Center
Federal
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Fort Sam Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 13, 2012 · Synced Sep 16, 2026, 5:55 PM EDT
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 9, 2010 · Synced Sep 16, 2026, 5:55 PM EDT
Terminated Phase 3 Interventional Results available

Efficacy and Safety of Telbivudine in Treatment naïve Patients With Hepatitis B e Antigen (HBeAg)-Positive Chronic Hepatitis B (CHB)

NCT00412750
View directory record Official record
Conditions
Hepatitis B
Interventions
Telbivudine (LdT), peginterferon alpha-2a
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years to 70 Years
Enrollment
159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 12, 2011 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 2 Interventional

Ph IIA Study (SOC +/- NS5B)

NCT01193361
View directory record Official record
Conditions
Hepatitis C Virus
Interventions
BMS-791325, Placebo, Peg-interferon alfa-2a, Ribavirin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 70 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
10
States / cities
Anaheim, California • Maywood, Illinois • Baltimore, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 8, 2015 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 4 Interventional Results available

A Study of PEGASYS (Peginterferon Alfa-2a (40KD)) in Combination With Ribavirin in Patients With Chronic Hepatitis C (CHC) Previously Treated With PEG-Intron + Ribavirin

NCT00087568
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Ribavirin, peginterferon alfa-2a [Pegasys]
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
25
States / cities
Bakersfield, California • Pasadena, California • San Diego, California + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2016 · Synced Sep 16, 2026, 5:55 PM 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 6, 2017 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Phase 2 Interventional Results available

A Rollover Study for Subjects Participating in the Control Arm of Study VX06-950-106, VX05-950-104 and VX05-950-104EU Whose Plasma Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) Levels Did Not Respond to Therapy

NCT00535847
View directory record Official record
Conditions
Hepatitis C
Interventions
Telaprevir, Ribavirin, Pegylated interferon alfa 2a
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 70 Years
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
39
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 35 more
Source: ClinicalTrials.gov public record
Updated Aug 4, 2014 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Not applicable Interventional

Directly Observed Hepatitis C Treatment in Methadone Clinics

NCT01442311
View directory record Official record
Conditions
Hepatitis C, Medication Adherence
Interventions
enhanced DOT (both pegylated interferon alfa-2a and ribavirin), standard DOT (PEG-DOT control arm)
Other
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2013
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jun 25, 2015 · Synced Sep 16, 2026, 5:55 PM EDT
Recruiting Phase 1 Interventional

AlloHCT With PegINFa for Myelofibrosis

NCT05535764
View directory record Official record
Conditions
Myelofibrosis
Interventions
Pegylated interferon alpha2a
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 16, 2026, 5:55 PM EDT
Completed Not applicable Interventional

Effects of Anti-HIV Therapy on Treatment for Hepatitis C in HCV/HIV Infected Adults

NCT00100581
View directory record Official record
Conditions
HIV Infections, Hepatitis C
Interventions
Efavirenz, Lamivudine, Lopinavir/ritonavir, Pegylated interferon alfa-2a, Ribavirin, Tenofovir disoproxil fumarate
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2007
U.S. locations
2
States / cities
New York, New York • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2021 · Synced Sep 16, 2026, 5:55 PM 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 3, 2016 · Synced Sep 16, 2026, 5:55 PM EDT