Cost-effectiveness of elbasvir/grazoprevir use in treatment-naive and treatment-experienced patients with hepatitis Cvirus genotype 1 infection and chronic kidney disease in the United States.

Abstract

Among patients with chronic kidney disease (CKD) in the United States, HCV infection causes significant morbidity and mortality and results in substantial healthcare costs. A once-daily oral regimen of elbasvir/grazoprevir (EBR/GZR) for 12 weeks was found to be a safe and efficacious treatment for HCV in patients with CKD. We evaluated the cost-effectiveness of EBR/GZR in treatment-naïve and treatment-experienced CKD patients compared with no treatment (NoTx) and pegylated interferon plus ribavirin (peg-IFN/RBV) using a computer-based model of the natural history of chronic HCV genotype 1 infection, CKD and liver disease. Data on baseline characteristics of the simulated patients were obtained from NHANES, 2000-2010. Model inputs were estimated from published studies. Cost of treatment with EBR/GZR and peg-INF/RBV were based on wholesale acquisition cost. All costs were from a third-party payer perspective and were expressed in 2015 U.S. dollars. We estimated lifetime incidence of liver-related complications, liver transplantation, kidney transplantation, end-stage live disease mortality and end-stage renal disease mortality; lifetime quality-adjusted life years (QALY); and incremental cost-utility ratios (ICUR). The model predicted that EBR/GZR will significantly reduce the incidence of liver-related complications and prolong life in patients with chronic HCV genotype 1 infection and CKD compared with NoTx or use of peg-IFN/RBV. EBR/GZR-based regimens resulted in higher average remaining QALYs and higher costs (11.5716, $191242) compared with NoTx (8.9199, $156236) or peg-INF/RBV (10.2857, $186701). Peg-IFN/RBV is not cost-effective, and the ICUR of EBR/GZR compared with NoTx was $13200/QALY. Treatment of a patient on haemodialysis with EBR/GZR resulted in a higher ICUR ($217000/QALY). Assuming a threshold of $100000 per QALY gained for cost-effectiveness, use of elbasvir/grazoprevir to treat an average patient with CKD can be considered cost-effective in the United States.