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© Research
Publication : Journal of hepatology

Randomized trial of asunaprevir plus peginterferon alfa and ribavirin for previously untreated genotype 1 or 4 chronic hepatitis C

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of hepatology - 16 Jul 2014

Bronowicki JP, Ratziu V, Gadano A, Thuluvath PJ, Bessone F, Martorell CT, Pol S, Terg R, Younes Z, He B, Eley T, Cohen D, Yu F, Hernandez D, McPhee F, Mendez P, Hughes E

Link to Pubmed [PMID] – 25038486

J. Hepatol. 2014 Dec;61(6):1220-7

BACKGROUND & AIMS: Asunaprevir is a selective HCV NS3 protease inhibitor, active against genotypes 1, 4, 5, and 6 in vitro. We evaluated asunaprevir plus peginterferon alfa-2a/ribavirin (PegIFNα/RBV) for genotype 1 and 4 chronic HCV.

METHODS: In this phase 2b, double-blind, placebo-controlled study, treatment-naive adults with genotype 1 (n=213) or 4 (n=25) were randomly assigned (3:1) to asunaprevir 200mg or placebo twice daily plus PegIFNα/RBV. Asunaprevir recipients, achieving protocol-defined response (HCV-RNA below quantification limit at week 4 and undetectable at week 10), were rerandomized at week 12 to continue asunaprevir-based triple therapy or receive placebo plus PegIFNα/RBV for weeks 13-24. Patients without protocol-defined response (PDR) and placebo recipients continued PegIFNα/RBV through week 48. Co-primary end points were undetectable HCV-RNA at week 4 and 12 (eRVR) and 24 weeks posttreatment (SVR24).

RESULTS: Most patients were male (64.3%), white (83.6%), and had non-CC IL28B genotypes (71.3%). Among genotype 1 patients, eRVR rates (asunaprevir vs. placebo) were 67% (80% CI 62, 72) vs. 6% (80% CI 2, 10); corresponding SVR24 rates were 64% (80% CI 59, 68) vs. 44% (80% CI 36, 53). SVR24 among genotype 4 patients was 89% (asunaprevir) vs. 43% (placebo). Rates of rash and haematologic adverse events were similar between treatment groups. Five asunaprevir-treated patients had grade 4 alanine aminotransferase elevations that resolved following discontinuation (n=4) or with continued dosing (n=1).

CONCLUSIONS: Addition of asunaprevir to PegIFNα/RBV in treatment-naive genotype 1- or 4-infected patients improves response rates and is well tolerated, with aminotransferase elevations that were manageable with appropriate monitoring. ClinicalTrials.gov ID: NCT01030432.

https://www.ncbi.nlm.nih.gov/pubmed/25038486