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Research Article: Early use of oral semaglutide in the UK: A cost-effectiveness analysis versus continuing metformin and SGLT-2 inhibitor therapy

Date Published: 2023-09-29

Abstract:
Objectives Many people with type 2 diabetes experience clinical inertia, remaining in poor glycaemic control on oral glucose-lowering medications rather than intensifying treatment with a glucagon-like peptide-1 receptor agonist, despite an efficacious, orally administered option, oral semaglutide, being available. The present study evaluated the long-term cost-effectiveness of initiating oral semaglutide versus continuing metformin plus sodium-glucose cotransporter-2 (SGLT-2) inhibitor therapy in the UK. Design Outcomes were projected over patients’ lifetimes using the IQVIA Core Diabetes Model (V.9.0). Clinical data were taken from the oral semaglutide and placebo arms of the patient subgroup receiving metformin plus an SGLT-2 inhibitor in PIONEER 4. Costs, expressed in 2021 Pounds sterling (GBP), were accounted from a healthcare payer perspective. Interventions Modelled patients received oral semaglutide immediately (in the first year of the analysis) or after a 2-year delay, after which all physiological parameters were brought to values observed in the immediate therapy arm. During the simulation, patients intensified with the addition of basal insulin and, subsequently, by switching to basal-bolus insulin. Results Immediate oral semaglutide therapy was associated with improvements in life expectancy of 0.17 (95% CIs 0.16 to 0.19) years, and quality-adjusted life expectancy of 0.15 (0.14 to 0.16) quality-adjusted life years (QALYs), versus a 2-year delay. Benefits were due to a reduced incidence of diabetes-related complications. Direct costs were estimated to be GBP 1423 (1349 to 1496) higher with immediate oral semaglutide therapy versus a 2-year delay, with higher treatment costs partially offset by cost savings from avoidance of diabetes-related complications. Immediate oral semaglutide therapy was therefore associated with an incremental cost-effectiveness ratio of GBP 9404 (8380 to 10 538) per QALY gained versus a 2-year delay. Conclusions Immediate oral semaglutide is likely to represent a cost-effective treatment in people with type 2 diabetes with inadequate glycaemic control on metformin plus an SGLT-2 inhibitor in the UK. Trial registration number NCT02863419 .

Introduction:
Diabetes affects more than 4.9?million people in the UK, with type 2 diabetes accounting for around 90% of cases and with more than GBP 19?billion spent on treating the disease in 2021. 1 2 Approximately 80% of National Health Service (NHS) diabetes-related expenditure is associated with the treatment of diabetes-related complications, the long-term incidence of which have been associated with short-term changes in physiological parameters such as glycated haemoglobin (HbA1c), blood pressure and body weight. 1…

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