Clinical Trial, Phase III
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't
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Effect of dapagliflozin in patients with type 2 diabetes who have inadequate glycaemic control with glimepiride: a randomized, 24-week, double-blind, placebo-controlled trial.

AIMS: Progressive deterioration of glycaemic control in type 2 diabetes mellitus (T2DM) often requires treatment intensification. Dapagliflozin increases urinary glucose excretion by selective inhibition of renal sodium-glucose cotransporter 2 (SGLT2). We assessed the efficacy, safety and tolerability of dapagliflozin added to glimepiride in patients with uncontrolled T2DM.

METHODS: This 24-week, randomized, double-blind, placebo-controlled, parallel-group, international, multicentre trial ( NCT00680745) enrolled patients with uncontrolled T2DM [haemoglobin A1c (HbA1c) 7-10%] receiving sulphonylurea monotherapy. Adult patients (n = 597) were randomly assigned to placebo or dapagliflozin (2.5, 5 or 10 mg/day) added to open-label glimepiride 4 mg/day for 24 weeks. Primary endpoint was HbA1c mean change from baseline at 24 weeks. Secondary endpoints included change in body weight and other glycaemic parameters.

RESULTS: At 24 weeks, HbA1c adjusted mean changes from baseline for placebo versus dapagliflozin 2.5/5/10 mg groups were -0.13 versus -0.58, -0.63, -0.82%, respectively (all p < 0.0001 vs. placebo by Dunnett's procedure). Corresponding body weight and fasting plasma glucose values were -0.72, -1.18, -1.56, -2.26 kg and -0.11, -0.93, -1.18, -1.58 mmol/l, respectively. In placebo versus dapagliflozin groups, serious adverse events were 4.8 versus 6.0-7.1%; hypoglycaemic events 4.8 versus 7.1-7.9%; events suggestive of genital infection 0.7 versus 3.9-6.6%; and events suggestive of urinary tract infection 6.2 versus 3.9-6.9%. No kidney infections were reported.

CONCLUSIONS: Dapagliflozin added to glimepiride in patients with T2DM uncontrolled on sulphonylurea monotherapy significantly improved HbA1c, reduced weight and was generally well tolerated, although events suggestive of genital infections were reported more often in patients receiving dapagliflozin.

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