Efficacy and safety of daclatasvir and asunaprevir in patients with hepatitis C virus genotype 1b infection on hemodialysis

Abstract

Background/Aims: We evaluated the efficacy and safety of daclatasvir (DCV) and asunaprevir (ASV) in patients with chronic hepatitis C virus (HCV) infection on hemodialysis. Methods: We performed a single-arm, multicenter prospective study. Twenty-one chronic hemodialysis patients with HCV infection were prospectively enrolled from February 2016 to April 2017. We evaluated the virological responses at weeks 4, 12, and 24 (end of treatment [EOT]) and the sustained virological response at 12 weeks after the EOT (SVR12). The tolerability and safety of the drugs were also assessed. Results: None of the 20 patients had the NS5A resistance-associated variant (NS5A RAV), and one patient was indeterminate for the NS5A RAV. Seventeen patients (80%) completed the 24 weeks of treatment with DCV and ASV. Four patients discontinued the study prior to week 12. In an intention-to-treat analysis, the SVR12 was 76.1%. In a per-protocol analysis, patients who completed DCV and ASV treatment achieved an SVR12 of 100%. DCV and ASV were well tolerated by the majority of patients. Three patients discontinued treatment due to adverse events (AEs) including dizziness, dyspnea, and neutropenia. The patient with indeterminate NS5A RAV showed viral breakthrough and discontinued treatment. Conclusions: DCV and ASV combination therapy in chronic hemodialysis patients with HCV infection achieved a high SVR12 rate with few AEs. To maximize the SVR12 rate, it is important to identify candidates by baseline RAV testing. Close monitoring of the safety and tolerability of DCV and ASV may be necessary in HCV-infected patients on hemodialysis.