Romanian Society of Pharmaceutical Sciences

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COST-EFFECTIVENESS ANALYSIS OF ESAXERENONE IN RESISTANT HYPERTENSION MANAGEMENT: A PARTITIONED SURVIVAL HEALTH ECONOMIC MODEL

DIMITRIJE GRBIC 1,2*, SLOBODAN JANKOVIC ³

¹ Health Economics and Outcomes Research, ZRx Outcomes Research Inc., Mississauga, Ontario, Canada
2 Doctoral academic studies, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
3 Department of Pharmacology and Toxicology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia

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This is the cost-effectiveness study of esaxerenone in patients with resistant hypertension (RH). The partitioned-survival model compared esaxerenone, spironolactone, eplerenone, finerenone, and baxdrostat. Health states were uncomplicated RH, RH with non-fatal complications, and death. Inputs were sourced from the literature. Intervention costs were referenced from the Republic Fund of Health Insurance of Serbia (RSD). Quality-Adjusted Life Years (QALY) were calculated using the EQ-5D. Treatment benefits are reflected through better blood pressure control. Analysis was from a third-party payer perspective with 3-month cycles, a 10-year modeling period, and an annual 5% discount. The outcomes were the incremental cost-effectiveness ratio (ICER) and net monetary benefit (NMB). The willingness-to-pay was 4,393,536 RSD/QALY. Sensitivity analyses assessed robustness. The results showed that esaxerenone was dominant in the base-case scenario. Spironolactone, eplerenone, and finerenone were more effective than baxdrostat. Spironolactone and finerenone dominated eplerenone. Spironolactone yielded cost savings versus finerenone but also had lower effectiveness (-85,810 RSD cost increment, -0.0066 QALY increment, and 56,890 RSD NMB at 10-year endpoint). Sensitivity analyses demonstrated stable findings, except for spironolactone versus finerenone and esaxerenone comparisons (which significantly relied on extrapolated effectiveness).