• Am J Manag Care · Aug 2021

    Cost-effectiveness of intensification with SGLT2 inhibitors for type 2 diabetes.

    • Manjiri Pawaskar, S Pinar Bilir, Stacey Kowal, Qianyi Li, Tracey Weiss, and Glenn Davies.
    • Merck & Co Inc, 126 E Lincoln Ave, Rahway, NJ 07065. Email: tracey.weiss@merck.com.
    • Am J Manag Care. 2021 Aug 1; 27 (8): e269-e277.

    ObjectivesUsing a US payer perspective, this study aimed to compare the lifetime cost-effectiveness of adding sodium-glucose cotransporter 2 (SGLT2) inhibitors vs switching to glucagon-like peptide 1 receptor agonists (GLP-1 RAs) among patients with type 2 diabetes who were not at glycated hemoglobin A1c target after dual therapy with metformin and dipeptidyl peptidase-4 (DPP-4) inhibitors.Study DesignThe cost-effectiveness analysis was performed with the validated IQVIA Core Diabetes Model. Treatment effects were obtained from randomized clinical trials with economic data based on published literature.MethodsRisk of treatment-emergent adverse events and complications were simulated using submodels informed by published risk equations adjusted for patient characteristics, physiological parameters, and history of complications. Outcomes included cumulative incidence of micro- and macrovascular complications, life-years (LYs), quality-adjusted life-years (QALYs), and total costs. Scenario analyses were performed to assess robustness of results to variations in clinical and cost inputs and assumptions.ResultsOver a lifetime time horizon, adding an SGLT2 inhibitor dominated the strategy of switching to a GLP-1 RA, improving survival by 0.049 LYs and 0.026 QALYs, and was associated with cost savings of $9511. The majority of the scenario analyses confirmed dominance of the DPP-4 inhibitor + SGLT2 inhibitor pathway vs the GLP-1 RA pathway. The probabilistic sensitivity analysis reinforced the base-case finding of cost savings while gaining QALYs.ConclusionsIntensification with an SGLT2 inhibitor on top of a DPP-4 inhibitor demonstrated slightly better efficacy and cost savings compared with switching to a GLP-1 RA in patients not at glycemic goal with metformin and a DPP-4 inhibitor.

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