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Showing 1–24 of 202 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Pegylated interferon alpha2a Clear all
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 12, 2026, 10:35 AM EDT
Completed Phase 1Phase 2 Interventional

Pharmacokinetics of Multiple Ascending Doses of VCH-222 in Subjects With Chronic Hepatitis C Infection

NCT00911963
View directory record Official record
Conditions
Hepatitis C
Interventions
VCH-222 or matching placebo, peginterferon alfa-2a, ribavirin
Drug · Biological
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 65 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
4
States / cities
Marietta, Georgia • Detroit, Michigan • Dallas, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 9, 2014 · Synced Sep 12, 2026, 10:35 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 8, 2015 · Synced Sep 12, 2026, 10:35 AM 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 12, 2026, 10:35 AM EDT
Terminated Phase 2 Interventional Results available

Standard of Care (SOC) With or Without CTS-1027 in Hepatitis C (HCV) Null-Responders

NCT01273064
View directory record Official record
Conditions
Hepatitis C
Interventions
CTS-1027, pegylated interferon, Ribavirin, Placebo
Drug
Lead sponsor
Conatus Pharmaceuticals Inc.
Industry
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
45
States / cities
Birmingham, Alabama • Coronado, California • La Jolla, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2012 · Synced Sep 12, 2026, 10:35 AM EDT
Completed No phase listed Observational Results available

PROPHESYS 3: Observational Study on Predictors of Response in Patients With Treatment-naïve Chronic Hepatitis C Initiated on Treatment With Pegasys (Peginterferon Alfa-2a) or Peginterferon-alfa-2b

NCT01066819
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Peginterferon alfa-2a [Pegasys], Peginterferon alfa-2b [PegIntron®]
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
1,656 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
105
States / cities
Birmingham, Alabama • Dothan, Alabama • Fresno, California + 86 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2016 · Synced Sep 12, 2026, 10:35 AM EDT
Withdrawn Phase 2Phase 3 Interventional

Vitamin D + Telaprevir + Peginterferon + Ribavirin for of Hepatitis C Genotype 1

NCT01890772
View directory record Official record
Conditions
Hepatitis C
Interventions
Telaprevir, Peginterferon alfa-2a, Ribavirin, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Timothy Morgan, MD
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
4
States / cities
Long Beach, California • Minneapolis, Minnesota • Kansas City, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated May 13, 2014 · Synced Sep 12, 2026, 10:35 AM EDT
Completed Phase 3 Interventional Results available

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

NCT01289782
View directory record Official record
Conditions
Hepatitis C
Interventions
Placebo, TMC435, Peginterferon alpha-2a (PegIFN alpha-2a), Ribavirin (RBV)
Drug
Lead sponsor
Janssen R&D Ireland
Industry
Eligibility
18 Years and older
Enrollment
395 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
22
States / cities
Dothan, Alabama • Hoover, Alabama • Phoenix, Arizona + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2014 · Synced Sep 12, 2026, 10:35 AM EDT
Completed Phase 4 Interventional Results available

A Study of PEGASYS (Peginterferon Alfa-2a (40KD)) in Patients With Hepatitis Be Antigen (HBeAg) Positive Chronic Hepatitis B (CHB).

NCT00435825
View directory record Official record
Conditions
Hepatitis B, Chronic
Interventions
peginterferon alfa-2a [Pegasys]
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
551 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
10
States / cities
Los Angeles, California • Palo Alto, California • San Diego, California + 7 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2013 · Synced Sep 12, 2026, 10:35 AM EDT
Completed Phase 2 Interventional Results available

Phase 2 Study of VX-950, Pegasys®, and Copegus® in Hepatitis C

NCT00336479
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Telaprevir, Ribavirin, Pegylated Interferon Alfa 2a, Placebo
Drug · Other
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 65 Years
Enrollment
263 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
36
States / cities
Phoenix, Arizona • Los Angeles, California • Palo Alto, California + 28 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2014 · Synced Sep 12, 2026, 10:35 AM 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 12, 2026, 10:35 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy Study of Daclatasvir (BMS-790052) Plus Pegylated Interferon-Alfa 2a and Ribavirin in Patients Coinfected With Untreated Hepatitis C Virus and HIV Virus

NCT01471574
View directory record Official record
Conditions
Hepatitis C, Genotype 1
Interventions
Daclatasvir, Ribavirin, PEG-Interferon alfa 2a
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 70 Years
Enrollment
549 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
23
States / cities
Birmingham, Alabama • La Jolla, California • Los Angeles, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2016 · Synced Sep 12, 2026, 10:35 AM 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 12, 2026, 10:35 AM EDT
Terminated Phase 3 Interventional Results available

Alisporivir (Deb025) and Boceprevir Triple Therapies in African American Participants Not Previously Treated for Chronic Hepatitis C Genotype 1

NCT01446250
View directory record Official record
Conditions
Hepatitis C
Interventions
Alisporivir, Boceprevir, Peginterferon alfa-2a, Ribavirin
Drug
Lead sponsor
Debiopharm International SA
Industry
Eligibility
18 Years to 70 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
2
States / cities
Beverly Hills, California • Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 15, 2017 · Synced Sep 12, 2026, 10:35 AM EDT
Terminated Phase 2 Interventional

Capecitabine and Pegylated Interferon Alfa-2a in Treating Patients With Recurrent or Progressive Brain Metastases Due to Breast Cancer

NCT00227656
View directory record Official record
Conditions
Breast Cancer, Metastatic Cancer
Interventions
PEG-interferon alfa-2a, Capecitabine
Biological · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
4
States / cities
Wichita, Kansas • Grand Rapids, Michigan • Springfield, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2012 · Synced Sep 12, 2026, 10:35 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy Study in Subjects With Chronic HCV and Underlying Hemophilia

NCT01741545
View directory record Official record
Conditions
Hepatitis C Virus
Interventions
Pegylated-Interferon-lambda, Ribavirin, Daclatasvir
Biological · Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older · Male only
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
4
States / cities
Palo Alto, California • Chicago, Illinois • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2020 · Synced Sep 12, 2026, 10:35 AM EDT
Completed No phase listed Observational Results available

An Observational Study of Peginterferon (e.g. Pegasys)-Based Direct Acting Antiviral Triple Therapy in Patients With Chronic Hepatitis C Genotype 1

NCT01508130
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Not listed
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
672 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
65
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Loma Linda, California + 53 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2017 · Synced Sep 12, 2026, 10:35 AM EDT
Completed Phase 2 Interventional

A Study of RO5024048 in Combination With Ritonavir-Boosted Danoprevir With or Without Copegus (Ribavirin) in Interferon-Naïve Patients With Chronic Hepatitis C Genotype 1 (INFORM-SVR)

NCT01278134
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
Copegus placebo, RO5024048, danoprevir, peginterferon alfa-2a [Pegasys], ribavirin [Copegus], ritonavir
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
18
States / cities
La Jolla, California • Sacramento, California • Orlando, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Sep 12, 2026, 10:35 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Peginterferon Alfa-2a to Enhance Anti-leukemic Responses After Allogeneic Transplantation in Acute Myeloid Leukemia

NCT02328755
View directory record Official record
Conditions
Acute Myeloid Leukemia
Interventions
peg-IFN-α, Hematopoietic Cell Transplant (HCT), Tacrolimus, Methotrexate
Drug · Procedure
Lead sponsor
University of Michigan Rogel Cancer Center
Other
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 5, 2021 · Synced Sep 12, 2026, 10:35 AM EDT
Completed Phase 3 Interventional Results available

Study Comparing Daclatasvir (BMS-790052) With Telaprevir Combined With Peginterferon Alfa-2a and Ribavirin in Patients With Chronic Hepatitis C Virus Infection

NCT01492426
View directory record Official record
Conditions
Hepatitis C
Interventions
Daclatasvir, Telaprevir, Peginterferon alfa-2a, Ribavirin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
605 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
25
States / cities
Birmingham, Alabama • Phoenix, Arizona • Long Beach, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2016 · Synced Sep 12, 2026, 10:35 AM 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 12, 2026, 10:35 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 16, 2015 · Synced Sep 12, 2026, 10:35 AM EDT
Terminated Phase 2 Interventional

Chronically-infected HCV Genotype 2 and 3 Treatment-naive Subjects: Part A: Safety and Efficacy of INX-08189 With Peg IFN Alfa-2a and Ribavirin. Part B: INX-08189 in Interferon Free Treatment With Daclatasvir and/or Ribavirin

NCT01425970
View directory record Official record
Conditions
Hepatitis C
Interventions
INX-08189, Placebo matching with INX-08189, Pegylated interferon alfa-2a, Ribavirin, Daclatasvir
Drug · Biological
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 65 Years
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
6
States / cities
Anaheim, California • La Jolla, California • San Francisco, California + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2015 · Synced Sep 12, 2026, 10:35 AM EDT
Completed Phase 2 Interventional Results available

Pegylated Interferon Alfa-2a Maintenance Therapy and Liver Disease Progression in People Infected With Both HIV and Hepatitis C Virus (HCV)

NCT00078403
View directory record Official record
Conditions
HIV Infections, Hepatitis C, Liver Disease
Interventions
Peginterferon alfa-2a, Ribavirin
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
36
States / cities
Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 23 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2021 · Synced Sep 12, 2026, 10:35 AM EDT