Multinational cost-effectiveness analysis of empagliflozin for heart failure patients with ejection fraction >40.

Abstract

Heart failure is a chronic progressive condition, with considerable burden on patients' quality of life and economic burden for the healthcare systems. Before the approval of empagliflozin, there were no proven effective treatments for patients with heart failure with left ventricular ejection fraction (HF LVEF)>40%. The aim of this study was to evaluate the cost-effectiveness of empagliflozin+standard of care (SoC) compared with SoC alone for patients with HF LVEF>40%, from the perspective of the healthcare systems of the United Kingdom (UK), Spain, and France, and to quantify the healthcare costs for these patients. A lifetime Markov cohort state-transition model was developed based on discrete health states defined by Kansas City Cardiomyopathy Questionnaire-Clinical Summary Score quartiles to track disease severity. Model inputs relied primarily on the EMPEROR-Preserved trial data or obtained from published literature or country-specific databases, as well as local guidelines for the requirements for the conduct of the economic evaluation of healthcare technologies. The total lifetime cost of receiving SoC per patient was £10092, €15765, and €14958 in the UK, Spain, and France, respectively, which increased by £1407, €1148, and €1485, respectively, with the addition of empagliflozin to the SoC. Empagliflozin+SoC was associated with significantly reduced number of hospitalization for HF or cardiovascular death compared with SoC alone, which was a key driver offsetting its drug acquisition costs. The incremental cost-effectiveness ratio per quality-adjusted life year (QALY) gained was consistently favourable at £14851, €11706, and €15447 in the UK, Spain, and France, respectively. Scenario analysis using the New York Heart Association functional class showed similar results. Probabilistic sensitivity analyses showed more than 50% probability for cost-effectiveness for a willingness-to-pay (WTP) threshold of £/€20000/QALY for the three countries. Empagliflozin was found to be the first targeted treatment option that is clinically effective and cost-effective for patients with HF LVEF>40%. Prescribing empagliflozin with SoC to patients with HF LVEF>40% is expected to improve clinical outcomes and patients' quality of life and substantially below accepted WTP threshold for the healthcare systems in the UK, Spain, and France.