Objectives: New antiviral medications for hepatitis C can significantly reduce liver disease risk, and decrease mortality rates and associated costs. The cost-effectiveness of Glecaprevir/Pibrentasvir (GLE/PIB) has not yet been compared with other treatments in Iran, although it has demonstrated effectiveness and cost-effectiveness in other countries such as Japan and Brazil. Therefore, this study aimed to determine the cost-effectiveness of Glecaprevir/Pibrentasvir compared with Sofosbuvir/Daclatasvir (SOF/DCV) and Sofosbuvir/Velpatasvir (SOF/VEL) in Iran.
Matherial and methods: The analysis was conducted using a Markov model with a one-year cycle in a lifetime horizon from the perspective of the Ministry of Health. Effectiveness was calculated based on Quality-Adjusted Life Years (QALY). Costs were based on the direct medical costs (DMC) of Hepatitis C Virus treatment in Iran in 2024. The extraction of effectiveness was based on the results of published valid studies. The extraction of costs was done based on micro-costing and local costing. A cost-effectiveness comparison of the three investigated medication regimens was conducted through incremental cost-effectiveness ratio (ICER) and Incremental net benefit (INB). Finally, one-way sensitivity analysis and probabilistic sensitivity analysis (PSA) were used to evaluate the uncertainty of the model parameters.
Results: The study showed that the direct medical costs (DMC) and Quality-Adjusted Life Years (QALYs) for GLE/PIB, SOF/DCV, and SOF/VEL were $7505, $5493, $5443, and 21.053, 20.806, and 20.898 QALYs, respectively. The ICER of GLE/PIB compared with SOF/DCV and SOF/VEL was $8138 and 13,282, respectively. The ICER was below the national willingness-to-pay threshold of 18,261 PPP$ (one time the GDP per capita for 2022), indicating that GLE/PIB was a cost-effective treatment. In the sensitivity analysis, the model was most sensitive to some parameters such as the cost of Chronic Hepatitis C (CHC) state for GLE/PIB, the cost of CHC for SOF/VEL, and the Utility of CHC for GLE/PIB and SOF/VEL. In the probabilistic sensitivity analysis, the probability of GLE/PIB being cost-effective compared to SOF/DCV was 56% and compared with SOF/VEL was 53.7%. The acceptability curve also showed that GLE/PIB was the superior choice in 40.6% of simulations based on differential willingness to pay.
Conclusion: The results showed that GLE/PIB is cost-effective compared with the two common medication regimens in Iran, SOF/DCV and SOF/VEL, consistent with Iran's national willingness-to-pay threshold based on one time the GDP per capita, making it a good treatment option for patients with hepatitis C.
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