Utility of week-4 viral response to tailor treatment duration in hepatitis C virus genotype 3/HIV co-infected patients

Manuel Crespo, Juan I. Esteban, Esteban Ribera, Vicenç Falco, Silvia Sauleda, María Buti, Rafael Esteban, Jaime Guardia, Inma Ocaña, Albert Pahissa

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36 Citations (Scopus)


OBJECTIVE: To investigate the utility of a week-4 virological response for sustained response prediction in hepatitis C virus (HCV) genotype 3/HIV-co-infected patients treated with interferon and ribavirin for 24 weeks. METHODS: Using a real-time polymerase chain reaction-based quantitative assay (COBAS AmpliPrep-COBAS-TaqMan 48; Roche Diagnostics) we retrospectively analysed samples obtained at baseline and weeks 4 and 12 from a subset of 35 HCV genotype 3-HIV co-infected patients enrolled in a randomized comparative trial of peginterferon α-2b versus interferon α-2b both in combination with ribavirin. RESULTS: In an intention-to-treat analysis, 78% of patients treated with peginterferon and 53% of those receiving standard interferon achieved a sustained virological response (SVR) Overall, at 4 weeks, 49% of patients had HCV RNA < 50 IU/ml and 63% had < 600 IU/ml. Of these rapid responders 88 and 86% achieved a SVR, respectively, with only one patient relapsing among end-of-treatment responders. In contrast, only 44 and 31% of patients with a week-4 HCV RNA ≥ 50 or ≥ 600 IU/ml achieved an SVR, respectively, with relapse rates of 33 and 50%, respectively. In multivariate logistic regression analysis a serum HCV RNA level below 600 IU/ml at week 4 was the strongest independent predictor of SVR (odds ratio, 11.3; 95% confidence interval, 1.7 to 75.0; P = 0.012). CONCLUSION: Monitoring early viral response may be useful to tailor the duration of treatment among patients with HCV genotype 3/HIV-co-infection. Patients whose HCV RNA falls below 600 IU/ml at 4 weeks are at low risk of relapse after 24 weeks of combination therapy. © 2007 Lippincott Williams & Wilkins, Inc.
Original languageEnglish
Pages (from-to)477-481
Issue number4
Publication statusPublished - 1 Feb 2007


  • Hepatitis C virus genotype 3
  • Hepatitis C virus short treatment
  • Hepatitis C virus/HIV co-infection
  • Rapid viral response
  • Viral response monitoring
  • Week-4 viral response


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