A randomized trial of prolonged high dose of interferon plus ribavirin for hepatitis C patients nonresponders to interferon alone

Retreatment of chronic hepatitis C patients nonresponders to interferon (IFN) alone with the standard dose of IFN [3 million units (MU) thrice weekly (TIW)] plus ribavirin for 24 weeks has yielded low sustained virological response (SVR), averaging 8%. The aim of the present, open‐labelled, randomiz...

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Veröffentlicht in:Journal of viral hepatitis 2004-11, Vol.11 (6), p.543-551
Hauptverfasser: Fattovich, G., Zagni, I., Ribero, M. L., Castagnetti, E., Minola, E., Lomonaco, L., Scattolini, C., Fabris, P., Boccia, S., Giusti, M., Abbati, G., Felder, M., Rovere, P., Redaelli, A., Tonon, A., Tomba, A., Montanari, R., Paternoster, C., Distasi, M., Fornaciari, G., Tositti, G., Rizzo, C., Suppressa, S., Pantalena, M., Noventa, F., Tagger, A.
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container_end_page 551
container_issue 6
container_start_page 543
container_title Journal of viral hepatitis
container_volume 11
creator Fattovich, G.
Zagni, I.
Ribero, M. L.
Castagnetti, E.
Minola, E.
Lomonaco, L.
Scattolini, C.
Fabris, P.
Boccia, S.
Giusti, M.
Abbati, G.
Felder, M.
Rovere, P.
Redaelli, A.
Tonon, A.
Tomba, A.
Montanari, R.
Paternoster, C.
Distasi, M.
Fornaciari, G.
Tositti, G.
Rizzo, C.
Suppressa, S.
Pantalena, M.
Noventa, F.
Tagger, A.
description Retreatment of chronic hepatitis C patients nonresponders to interferon (IFN) alone with the standard dose of IFN [3 million units (MU) thrice weekly (TIW)] plus ribavirin for 24 weeks has yielded low sustained virological response (SVR), averaging 8%. The aim of the present, open‐labelled, randomized study was to evaluate the efficacy of IFN induction therapy followed by prolonged high dose of IFN plus ribavirin in nonresponders. One hundred and fifty‐one patients were randomized to receive 5 MU daily of IFN alfa‐2b (group 1, n = 73) or 5 MU TIW of IFN alfa 2b (group 2, n = 78) for 4 weeks followed by IFN (5 MU TIW) plus ribavirin (1000/1200 mg/daily) for 48 weeks in both groups. In an intention‐to‐treat analysis, the sustained virological response (SVR) at 24‐week follow‐up was 33 and 23% for group 1 and 2, respectively (P = 0.17). The overall SVR was 52 and 18% in patients with genotype 2/3 and 1/4, respectively. Among genotype 1/4 patients the SVR was 29 and 11% for age younger or older than 40 years. Compared with genotype 2/3 patients, the risk (95% confidence interval) of nonresponse to retreatment was 3.0‐fold (1.17–8.0) in younger genotype 1/4 patients and 8.4‐fold (3.0–23.29) in older genotype 1/4 patients. In conclusion these results suggest that retreatment with a reinforced regimen should be focused in nonresponder genotype 2/3 patients and younger genotype 1/4 patients, who are most likely to benefit. Induction therapy does not improve SVR.
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L. ; Castagnetti, E. ; Minola, E. ; Lomonaco, L. ; Scattolini, C. ; Fabris, P. ; Boccia, S. ; Giusti, M. ; Abbati, G. ; Felder, M. ; Rovere, P. ; Redaelli, A. ; Tonon, A. ; Tomba, A. ; Montanari, R. ; Paternoster, C. ; Distasi, M. ; Fornaciari, G. ; Tositti, G. ; Rizzo, C. ; Suppressa, S. ; Pantalena, M. ; Noventa, F. ; Tagger, A.</creator><creatorcontrib>Fattovich, G. ; Zagni, I. ; Ribero, M. L. ; Castagnetti, E. ; Minola, E. ; Lomonaco, L. ; Scattolini, C. ; Fabris, P. ; Boccia, S. ; Giusti, M. ; Abbati, G. ; Felder, M. ; Rovere, P. ; Redaelli, A. ; Tonon, A. ; Tomba, A. ; Montanari, R. ; Paternoster, C. ; Distasi, M. ; Fornaciari, G. ; Tositti, G. ; Rizzo, C. ; Suppressa, S. ; Pantalena, M. ; Noventa, F. ; Tagger, A.</creatorcontrib><description>Retreatment of chronic hepatitis C patients nonresponders to interferon (IFN) alone with the standard dose of IFN [3 million units (MU) thrice weekly (TIW)] plus ribavirin for 24 weeks has yielded low sustained virological response (SVR), averaging 8%. The aim of the present, open‐labelled, randomized study was to evaluate the efficacy of IFN induction therapy followed by prolonged high dose of IFN plus ribavirin in nonresponders. One hundred and fifty‐one patients were randomized to receive 5 MU daily of IFN alfa‐2b (group 1, n = 73) or 5 MU TIW of IFN alfa 2b (group 2, n = 78) for 4 weeks followed by IFN (5 MU TIW) plus ribavirin (1000/1200 mg/daily) for 48 weeks in both groups. In an intention‐to‐treat analysis, the sustained virological response (SVR) at 24‐week follow‐up was 33 and 23% for group 1 and 2, respectively (P = 0.17). The overall SVR was 52 and 18% in patients with genotype 2/3 and 1/4, respectively. Among genotype 1/4 patients the SVR was 29 and 11% for age younger or older than 40 years. Compared with genotype 2/3 patients, the risk (95% confidence interval) of nonresponse to retreatment was 3.0‐fold (1.17–8.0) in younger genotype 1/4 patients and 8.4‐fold (3.0–23.29) in older genotype 1/4 patients. 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L.</creatorcontrib><creatorcontrib>Castagnetti, E.</creatorcontrib><creatorcontrib>Minola, E.</creatorcontrib><creatorcontrib>Lomonaco, L.</creatorcontrib><creatorcontrib>Scattolini, C.</creatorcontrib><creatorcontrib>Fabris, P.</creatorcontrib><creatorcontrib>Boccia, S.</creatorcontrib><creatorcontrib>Giusti, M.</creatorcontrib><creatorcontrib>Abbati, G.</creatorcontrib><creatorcontrib>Felder, M.</creatorcontrib><creatorcontrib>Rovere, P.</creatorcontrib><creatorcontrib>Redaelli, A.</creatorcontrib><creatorcontrib>Tonon, A.</creatorcontrib><creatorcontrib>Tomba, A.</creatorcontrib><creatorcontrib>Montanari, R.</creatorcontrib><creatorcontrib>Paternoster, C.</creatorcontrib><creatorcontrib>Distasi, M.</creatorcontrib><creatorcontrib>Fornaciari, G.</creatorcontrib><creatorcontrib>Tositti, G.</creatorcontrib><creatorcontrib>Rizzo, C.</creatorcontrib><creatorcontrib>Suppressa, S.</creatorcontrib><creatorcontrib>Pantalena, M.</creatorcontrib><creatorcontrib>Noventa, F.</creatorcontrib><creatorcontrib>Tagger, A.</creatorcontrib><title>A randomized trial of prolonged high dose of interferon plus ribavirin for hepatitis C patients nonresponders to interferon alone</title><title>Journal of viral hepatitis</title><addtitle>J Viral Hepat</addtitle><description>Retreatment of chronic hepatitis C patients nonresponders to interferon (IFN) alone with the standard dose of IFN [3 million units (MU) thrice weekly (TIW)] plus ribavirin for 24 weeks has yielded low sustained virological response (SVR), averaging 8%. The aim of the present, open‐labelled, randomized study was to evaluate the efficacy of IFN induction therapy followed by prolonged high dose of IFN plus ribavirin in nonresponders. One hundred and fifty‐one patients were randomized to receive 5 MU daily of IFN alfa‐2b (group 1, n = 73) or 5 MU TIW of IFN alfa 2b (group 2, n = 78) for 4 weeks followed by IFN (5 MU TIW) plus ribavirin (1000/1200 mg/daily) for 48 weeks in both groups. In an intention‐to‐treat analysis, the sustained virological response (SVR) at 24‐week follow‐up was 33 and 23% for group 1 and 2, respectively (P = 0.17). The overall SVR was 52 and 18% in patients with genotype 2/3 and 1/4, respectively. Among genotype 1/4 patients the SVR was 29 and 11% for age younger or older than 40 years. Compared with genotype 2/3 patients, the risk (95% confidence interval) of nonresponse to retreatment was 3.0‐fold (1.17–8.0) in younger genotype 1/4 patients and 8.4‐fold (3.0–23.29) in older genotype 1/4 patients. In conclusion these results suggest that retreatment with a reinforced regimen should be focused in nonresponder genotype 2/3 patients and younger genotype 1/4 patients, who are most likely to benefit. 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L. ; Castagnetti, E. ; Minola, E. ; Lomonaco, L. ; Scattolini, C. ; Fabris, P. ; Boccia, S. ; Giusti, M. ; Abbati, G. ; Felder, M. ; Rovere, P. ; Redaelli, A. ; Tonon, A. ; Tomba, A. ; Montanari, R. ; Paternoster, C. ; Distasi, M. ; Fornaciari, G. ; Tositti, G. ; Rizzo, C. ; Suppressa, S. ; Pantalena, M. ; Noventa, F. ; Tagger, A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5288-19f0c7bf50f3261ee07707ac6182326d94046dadb473fac5ae3876760e9df6563</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Antiviral Agents - administration &amp; dosage</topic><topic>Antiviral Agents - therapeutic use</topic><topic>chronic hepatitis C</topic><topic>Drug Therapy, Combination</topic><topic>Female</topic><topic>Hepacivirus - classification</topic><topic>Hepacivirus - drug effects</topic><topic>Hepacivirus - genetics</topic><topic>Hepatitis C virus</topic><topic>Hepatitis C, Chronic - drug therapy</topic><topic>Hepatitis C, Chronic - virology</topic><topic>high dose interferon</topic><topic>Humans</topic><topic>Interferon-alpha - administration &amp; dosage</topic><topic>Interferon-alpha - therapeutic use</topic><topic>Male</topic><topic>Middle Aged</topic><topic>nonresponders to interferon</topic><topic>prolonged therapy</topic><topic>Recombinant Proteins</topic><topic>ribavirin</topic><topic>Ribavirin - administration &amp; dosage</topic><topic>Ribavirin - therapeutic use</topic><topic>RNA, Viral - blood</topic><topic>Time Factors</topic><topic>Treatment Failure</topic><topic>Treatment Outcome</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fattovich, G.</creatorcontrib><creatorcontrib>Zagni, I.</creatorcontrib><creatorcontrib>Ribero, M. 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The aim of the present, open‐labelled, randomized study was to evaluate the efficacy of IFN induction therapy followed by prolonged high dose of IFN plus ribavirin in nonresponders. One hundred and fifty‐one patients were randomized to receive 5 MU daily of IFN alfa‐2b (group 1, n = 73) or 5 MU TIW of IFN alfa 2b (group 2, n = 78) for 4 weeks followed by IFN (5 MU TIW) plus ribavirin (1000/1200 mg/daily) for 48 weeks in both groups. In an intention‐to‐treat analysis, the sustained virological response (SVR) at 24‐week follow‐up was 33 and 23% for group 1 and 2, respectively (P = 0.17). The overall SVR was 52 and 18% in patients with genotype 2/3 and 1/4, respectively. Among genotype 1/4 patients the SVR was 29 and 11% for age younger or older than 40 years. Compared with genotype 2/3 patients, the risk (95% confidence interval) of nonresponse to retreatment was 3.0‐fold (1.17–8.0) in younger genotype 1/4 patients and 8.4‐fold (3.0–23.29) in older genotype 1/4 patients. In conclusion these results suggest that retreatment with a reinforced regimen should be focused in nonresponder genotype 2/3 patients and younger genotype 1/4 patients, who are most likely to benefit. Induction therapy does not improve SVR.</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><pmid>15500555</pmid><doi>10.1111/j.1365-2893.2004.00538.x</doi><tpages>9</tpages></addata></record>
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subjects Adult
Aged
Antiviral Agents - administration & dosage
Antiviral Agents - therapeutic use
chronic hepatitis C
Drug Therapy, Combination
Female
Hepacivirus - classification
Hepacivirus - drug effects
Hepacivirus - genetics
Hepatitis C virus
Hepatitis C, Chronic - drug therapy
Hepatitis C, Chronic - virology
high dose interferon
Humans
Interferon-alpha - administration & dosage
Interferon-alpha - therapeutic use
Male
Middle Aged
nonresponders to interferon
prolonged therapy
Recombinant Proteins
ribavirin
Ribavirin - administration & dosage
Ribavirin - therapeutic use
RNA, Viral - blood
Time Factors
Treatment Failure
Treatment Outcome
title A randomized trial of prolonged high dose of interferon plus ribavirin for hepatitis C patients nonresponders to interferon alone
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