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  • Title: Efficacy of vildagliptin in combination with insulin in patients with type 2 diabetes and severe renal impairment.
    Author: Lukashevich V, Schweizer A, Foley JE, Dickinson S, Groop PH, Kothny W.
    Journal: Vasc Health Risk Manag; 2013; 9():21-8. PubMed ID: 23378769.
    Abstract:
    BACKGROUND: The purpose of this study was to evaluate the efficacy of vildagliptin 50 mg once daily in patients with severe renal impairment (estimated glomerular filtration rate < 30 mL/min/1.73 m(2)) and longstanding type 2 diabetes not adequately controlled with insulin therapy, which is a difficult-to-treat population, with limited therapeutic options and a high susceptibility to hypoglycemia. METHODS: This was a post hoc subanalysis of data obtained during a previously described randomized, double-blind, parallel-group, 24-week study comparing the efficacy and safety of vildagliptin 50 mg once daily versus placebo in patients with type 2 diabetes and moderate or severe renal impairment. The present data derive from 178 patients with severe renal impairment (baseline estimated glomerular filtration rate approximately 21 mL/min/1.73 m(2), 100 randomized to vildagliptin, 78 randomized to placebo), all of whom were receiving insulin therapy (alone or in combination with an oral antidiabetic agent) for longstanding type 2 diabetes (mean approximately 19 years). RESULTS: With vildagliptin in combination with insulin, the adjusted mean change (AMΔ) in HbA(1c) from baseline (7.7% ± 0.1%) was -0.9% ± 0.4% and the between-treatment difference (vildagliptin - placebo) was -0.6% ± 0.2% (P < 0.001). The percentage of patients achieving endpoint HbA(1c) < 7.0% was significantly higher with vildagliptin than placebo (45.2% versus 22.8%, P = 0.008). When added to insulin, vildagliptin and placebo had comparable hypoglycemic profiles and did not cause weight gain. Both treatments were similarly well tolerated, with comparable incidences of adverse events, serious adverse events, and deaths. CONCLUSION: When added to insulin therapy in patients with severe renal impairment and longstanding type 2 diabetes, vildagliptin 50 mg once daily was efficacious, eliciting HbA(1c) reductions consistent with those previously reported for a patient population with much more recent onset of type 2 diabetes and normal renal function, and had a hypoglycemic profile comparable with placebo. Accordingly, vildagliptin is a suitable treatment option for patients with advanced type 2 diabetes and impaired renal function who require insulin therapy and present a serious therapeutic challenge in clinical practice.
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