Limited Utilization of SGLT2 Inhibitors: Why the Inertia?

Credit: Original article published here.Sodium-glucose transport protein 2 (SGLT2) inhibitors (SGLT2i), or gliflozins, block SGLT2 cotransporters in the proximal tubules and reduce renal glucose and sodium reabsorption.1 Reduced reabsorption of sodium results in natriuresis, which, through tubuloglomerular feedback, causes a reduction of intraglomerular pressure. SGLT2i have been shown to not only slow kidney progression in patients with chronic kidney disease regardless of diabetes status, but also improve glucose control, reduce the risk of heart failure, and reduce blood pressure, and they do so in a cost-effective manner.2 The use of SGLT2i has been limited despite approval in the United States since 2013 (canagliflozin). One important factor, which research suggests might be a myth, is that underutilization of SGLT2i therapy is due to their high cost or high copayments. Two recent studies have reported on utilization of SGLT2i where cost was not a factor, namely the US Department of Veterans Affairs (VA), where prescriptions are free. The first study by Mahtta et al looked at SGLT2i use in 537,980 patients with atherosclerotic cardiovascular disease (ASCVD) and type 2 diabetes mellitus (T2DM) in 130 VA facilities.3 They reported that approximately 11% of patients were on SGLT2i therapy. Surprisingly, among individuals with an

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