The first direct-acting antiviral (DAA) therapies for chronic Hepatitis C virus (HCV) infection were reimbursed via Australia’s Pharmaceutical Benefits Scheme (PBS) in March 2016. This was based on the recommendation from the Pharmaceutical Benefits Advisory Committee (PBAC) that the regimens would be acceptably cost-effective at an incremental cost-effectiveness ratio (ICER) of AUD15,000/quality-adjusted life-year (QALY). Broad access to DAA therapies has been a key strategy in driving a national health goal to eliminate viral hepatitis as a major health threat by 2030. Since the initial PBS listings for DAA therapies and subsequent listings of newer DAA treatments such as Maviret, the demographics and disease characteristics of currently treated patients have markedly changed. The aim of our analysis was to reassess the cost-effectiveness of Maviret, accounting for the changes of the treated population characteristics and retreatment in first-line failures and reinfected individuals.

To assess the cost-effectiveness six years after initial listing of Maviret, an update was made to the Markov model used to achieve PBS reimbursement for Viekira-Pak® in May 2016. Amendments to the Viekira-Pak model include: changes to baseline age and fibrosis distribution of treated patients, and incorporation of retreatment of first-line failures (those not achieving a sustained virologic response (SVR)) and reinfected individuals. Treatment-related inputs including SVR response rates, adverse events, treatment-related disutility and discontinuations were sourced from pivotal glecaprevir/pibrentasvir clinical trials.

Using the published price of Maviret, the ICER is above AUD15,000/QALY but well below the commonly used ICER threshold in other chronic diseases (AUD45,000/QALY). When the confidential effective price is used, the ICER is under the AUD15,000/QALY cost-effectiveness threshold set by the PBAC for DAA therapies.

Despite substantial changes to the population seeking treatment in Australia since reimbursement in 2016, Maviret remains a cost-effective treatment for chronic HCV infection.