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CompletedNCT00830609DARGEN-3Updated Mar 13, 2012

High Dose Versus Standard Dose of Ribavirin in Patients With Chronic Hepatitis C, Genotype 3

A Phase 4 interventional study of Peginterferon alfa 2 A and Peginterferon alfa 2 A, ribavirin + Epo Beta in Chronic Hepatitis C, sponsored by Dr. Conrado Fernandez. Completed at 28 sites in Spain. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2012-03-13.

Sponsored by Dr. Conrado Fernandez · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
101
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

The rate of sustained virological response (SVR) in patients with chronic hepatitis C, genotype 3, high viral load and without rapid virological response (RNA-HCV negative at week 4) is low. Standard of care of these patients include treatment with weekly peginterferon plus 800 mg/day of ribavirin (RBV). Extended treatment to 48 weeks does not provide more clinical benefit than the standard duration. The main hypothesis is that higher dose of ribavirin may be better in terms of SVR than the standard dose.

Read the detailed description

Aims:

  1. Efficacy 1.1) Rate of RNA-HCV negative at week 4 and 24 in each arm. 1.2) Rate of SVR in each arm.
  2. Safety 2.1) Rate of adverse effects in each arm.

Design: Randomized controlled trial.

Patients will be randomly allocated into three arms:

Arm A : Peginterferon α-2a (180 μg/week)SC. plus Ribavirin (800 mg/day) p.o. over 24 weeks.

Arm B: Peginterferon α-2a (180 μg/week) plus Ribavirin (1600 mg/day) with support of Epoetin β (450 IU/kg/week) SC over 4 weeks:

B1.- If RNA-HCV undetectable at week 4, standard of care will be continued (Peginterferon α-2a, 180 μg/wee plus Ribavirin (800 mg/day) over 20 additional weeks).

B2.- If RNA-HCV were detectable at week 4, treatment will be continued with peginterferon α-2a (180 μg/week) plus RBV(1,600 mg/day) plus Epoetin β (450 UI/kg/week) over 20 additional weeks.

Sample size: 111 patients. To increase the SVR from 50% to 75%. Beta: 0.1; alfa: 0.05; Loss: 15%.

Randomization will be 1:2, 37 patients in Group A and 74 patients in group B.

02

Conditions studied

  • Chronic Hepatitis C

Keywords

  • Chronic Hepatitis C
  • Genotype 3
  • High viral load
03

In context

Hepatitis A

2,709 studies on the registry are indexed under Hepatitis A; 142 are open to participants now.

This study's enrollment of 101 is close to the median of 100 across 1,886 interventional studies indexed under Hepatitis A.

Browse Hepatitis A studies →

Lead sponsor

This is the only study on the registry with Dr. Conrado Fernandez as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • HCV Genotype 3
  • RNA-HCV > > 600.000 IU/ml.
  • Compromise to use contraceptive measures on treatment until 6 months after the end of treatment.

Exclusion criteria

Exclusion Criteria:

  • Pregnant or breastfeeding females.
  • Concurrent treatment with antineoplastic or immunomodulatory agents, including corticosteroids or radiation therapy over the last 6 months before starting the trial
  • Treatment with investigational drugs \< 6 weeks before starting the trial
  • Chronic liver disease other than hepatitis C.
  • Evidence of hepatocellular carcinoma.
  • Evidence of carcinoma hepatocellular
  • Decompensated liver disease
  • Baseline Neutrophil count \< 1500/cc; or Platelet count \< 90,000/cc
  • Baseline Hemoglobin \<12 g/dL in females o \<13 g/dL in males.
  • Increased risk of anemia(Eg, thalassemia, spherocytosis..).
  • Ischemic heart disease or cerebrovascular disease.
  • Serum creatinine >1.5 times upper limit of normality.
  • History of severe psychiatric conditions (Major antidepressives or neuroleptic drugs required for major depression or psychosis), suicide attempts or psychiatric disability .
  • History of convulsive disorders.
  • Immunological conditions.
  • Chronic Obstructive Lung Disease with limited functionality
  • Severe heart disease or congestive cardiac insufficiency cardiopathy grave.
  • Advanced atherosclerosis
  • Solid organ or bone marrow transplant.
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
101 participants (actual)

Study arms

  • Active comparator
    A

    Patients in this arm will receive standard of care (Peginterferon alfa 2A 180 mcg/weeks SC plus ribavirin 800 mg/day for 24 weeks).

    Drug: Peginterferon alfa 2 A · Drug: ribavirin

  • Experimental
    B1

    After a period of 4 weeks with peginterferon alfa 2 a 180 mcg/week plus RBV 1600 mg/day (Induction phase), these patients will be allocated according to negativity or positivity of RNA-HCV at week 4. If RNA-HCV negative, treatment with peginterferon alfa 2 a 180 mcg/week plus RBV 800 mg/day (SOC) will be continued over 20 additional weeks (Arm B1). Epo β (450 IU/kg/week) will be administered as required to maintain hemoglobin \> 12g/dL.

    Drug: Peginterferon alfa 2 A · Drug: Peginterferon alfa 2 A, ribavirin + Epo Beta · Drug: Peginterferon alfa 2 · Drug: ribavirin

  • Experimental
    B2

    If RNA-HCV at week 4 remains positive after the induction phase, then peginterferon alfa 2 a 180 mcg/week plus RBV 1600 mg/day will be continued for 20 additional weeks (Arm B2). Epo β (450 IU/kg/week) will be administered as required to maintain hemoglobin \> 12g/dL.

    Drug: Peginterferon alfa 2 A · Drug: Peginterferon alfa 2 A, ribavirin + Epo Beta · Drug: ribavirin

Interventions

  • DrugPeginterferon alfa 2 A

    Peginterferon alfa 2 A 180 mcg/week SC plus Ribavirin 800 mg/day po (Control Group) Peginterferon alfa 2 A 180 mcg/week SC plus Ribavirin 1,600 mg/day po plus Epoetin β (450 IU/kg/week) SC over 4 weeks (Arm B1) Peginterferon alfa 2 A 180 mcg/week SC plus Ribavirin 1,600 mg/day po plus Epo beta 450 UI over four weeks (Arm B1) If RNA-HCV positive at week 4, Peginterferon alfa 2 A 180 mcg/week SC plus Ribavirin 1,600 mg/day plus Epo beta 450 UI to keep Hb\>12 g/dL if required over 20 additional weeks (Arm B2)

    Also known as: Pegasys

  • DrugPeginterferon alfa 2 A, ribavirin + Epo Beta

    Ribavirin 1,600 mg/day plus peginterferon alfa 2A 180 mcg/week plus Epo beta 450 IU/Kg/day to maintain Hb\>12g/dl over 4 or 24 weeks

    Also known as: Pegasys

  • Drugribavirin

    RBV 1600 mg/day 24 weeks

    Also known as: peginterferon alfa 2 a, Epoetin beta

  • Drugribavirin

    ribavirin 800 mg/day for 24 weeks

    Also known as: Pegasys

  • DrugPeginterferon alfa 2

    Peginterferon alfa 2 a 180 mcg/week for 4 weeks and then peginterferon alfa 2A for 20 weeks

    Also known as: Pegasys

  • Drugribavirin

    RBV 1600 mg/day 4 weeks and then ribavirin 800 mg/day 20 weeks

    Also known as: Pegasys

06

What researchers measure

Primary outcomes

  1. Rate of patients with RNA-HCV negative in each arm at week 24 after the end of treatment.

    Time frame: 1 year

Secondary outcomes

  1. Rate of patients with undetectable RNA-HCV in each arm at week 4 and 24 of treatment. Rate of adverse effects in each arm.

    Time frame: 1 year

07

Study locations

28 sites
  • Hospital Germans Trias i Pujol
    Badalona, Barcelona 08916, Spain
  • Hospital de Bellvitge
    L´Hospitalet de Llobregat, Barcelona 08907, Spain
  • Hospital Parc Taulí
    Sabadell, Barcelona 08208, Spain
  • Hospital de Donostia
    San Sebastian, Guipuzcoa 20014, Spain
  • Hospital Fundación Alcorcón
    Alcorcón, Madrid 28922, Spain
  • Hospital de Getafe
    Getafe, Madrid 28901, Spain
  • Hospital Puerta de Hierro
    Majadahonda, Madrid 28222, Spain
  • Hospital Costa del Sol
    Marbella, Málaga 29603, Spain
  • Hospital del Mar
    Barcelona, 08003, Spain
  • Hospital Clinic i Provincial de Barcelona
    Barcelona, 08036, Spain
  • Hospital Universitario Reina Sofía
    Córdoba, 14004, Spain
  • Hospital Universitario Virgen de las Nieves
    Granada, 18004, Spain
  • Hospital San Cecilio
    Granada, Spain
  • Hospital de León
    León, 24071, Spain
  • Hospital La Princesa
    Madrid, 28006, Spain
  • Hospital Gregorio Marañon
    Madrid, 28007, Spain
  • Hospital 12 de Octubre
    Madrid, 28021, Spain
  • Hospital Ramón y Cajal
    Madrid, 28034, Spain
  • Hospital Clínico Universitario Virgen de la Victoria
    Málaga, 29010, Spain
  • Hospital Central de Asturias
    Oviedo, 33006, Spain
  • Hospital Clinico Universitario de Salamanca
    Salamanca, 37007, Spain
  • Hospital Marqués de Valdecilla
    Santander, 39008, Spain
  • Hospital de Valme
    Sevilla, 41014, Spain
  • Hospital Clínico Universitario de Valencia
    Valencia, 46010, Spain
  • Hospital Clínico Universitario de Valladolid
    Valladolid, 47005, Spain
  • Hospital Santiago Apóstol
    Vitoria, 01004, Spain
  • Hospital Clínico de Zaragoza
    Zaragoza, 50009, Spain
  • Hospital Miguel Servet
    Zaragoza, 50009, Spain
08

References and documents

Publications

  • Fernandez-Rodriguez CM, Morillas RM, Masnou H, Navarro JM, Barcena R, Gonzalez JM, Martin-Martin L, Poyato A, Miquel-Planas M, Jorquera F, Casanovas T, Salmeron J, Calleja JL, Sola R, Alonso S, Planas R, Romero-Gomez M. Randomized clinical trial comparing high versus standard dose of ribavirin plus peginterferon alfa-2a in hepatitis C genotype 3 and high viral load. Dargen-3 study. Gastroenterol Hepatol. 2014 Jan;37(1):1-8. doi: 10.1016/j.gastrohep.2013.10.005. Epub 2013 Dec 17. PubMed 24360571 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 13, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00830609
Lead sponsor
Dr. Conrado Fernandez
Responsible party
Dr. Conrado Fernandez (MD, Hospital Universitario Fundación Alcorcón) — Sponsor-investigator
First posted
Jan 28, 2009
Start date
Nov 2008
Primary completion
Sep 2011
Completion
Dec 2011
Last update
Mar 13, 2012

Study contacts

Conrado M Fernandez-Rodriguez
study director · Hospital Universitario Fundacion Alcorcon; University Rey Juan Carlos.

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Mar 2012. You cannot join it, but the record below documents what was studied.

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