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      • Sofosbuvir/Velpatasvir (SOF/VEL) for 12 Weeks in Genotype 1, 2, 4, 5, 6 HCV Patients: Results of the ASTRAL-1 Study

        ( Mark S. Sulkowski ),( Henry Lik Yuen Chan ),( Jordan J. Feld ),( Kosh Agarwal ),( Christophe Hezode ),( Tarik Asselah ),( Peter J. Ruane ),( Norbert Gruener ),( Armand Abergel ),( Alessandra Mangia 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1

        Background: Velpatasvir (VEL) is a pangenotypic HCV-NS5A inhibitor. This Phase 3 study evaluated treatment with a fixed dose combination of SOF/VEL for 12 weeks in patients with genotype 1, 2, 4, 5, or 6 HCV infection. Methods: Patients with genotype 1, 2, 4, or 6 chronic HCV infection were randomized 5:1 to received SOF/VEL (400 mg /100 mg daily) or placebo for 12 weeks. Patients with genotype 5 infection were enrolled to the SOF/VEL treatment group and patients with genotype 3 were evaluated in a separate study. Results: 740 patients were enrolled at 81 international sites: 60% male, 79% white, 32% treatment-experienced (TE), and 19% compensated- cirrhosis. Of the 624 patients treated with SOF/VEL, the genotype distribution was 53% GT1, 17% GT2, 19% GT4, 6% GT5 and 7 % GT6. Overall SVR12 for SOF/VEL-treated patients was 99.0% and the study met its primary efficacy endpoint. SVR12 rates by HCV genotype are presented in the table. Two of 328 patients (0.6%) with genotype-1 infection had virologic relapse. No patients with genotype 2, 4, 5, or 6, including 48 with cirrhosis, had virologic failure. Four patients did not achieve SVR12 for non-virologic reasons. AEs and laboratory abnormalities were similar in the SOF/VEL-treated patients compared with the 116 placebo-treated patients. One patient discontinued SOF/VEL treatment due to adverse-events. Conclusions: Treatment with the once daily, all-oral, single tablet regimen of SOF/VEL for 12 weeks is well tolerated and results in high SVR12 rates in treatment-naive and treatment-experienced genotype 1, 2, 4, 5, and 6 HCV-infected patients with and without cirrhosis.

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