Pharmacokinetics and Pharmacodynamics of Canagliflozin, a Sodium Glucose Co‐Transporter 2 Inhibitor, in Subjects With Type 2 Diabetes Mellitus

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Abstract

This study characterized single- and multiple-dose pharmacokinetics of canagliflozin and its O-glucuronide metabolites (M5 and M7) and pharmacodynamics (renal threshold for glucose [RTG ], urinary glucose excretion [UGE0-24h ], and 24-hour mean plasma glucose [MPG0-24h ]) of canagliflozin in subjects with type 2 diabetes. Thirty-six randomized subjects received canagliflozin 50, 100, or 300 mg/day or placebo for 7 days. On Days 1 and 7, area under the plasma concentration-time curve and maximum observed plasma concentration (Cmax ) for canagliflozin and its metabolites increased dose-dependently. Half-life and time at which Cmax was observed were dose-independent. Systemic molar M5 exposure was half that of canagliflozin; M7 exposure was similar to canagliflozin. Steady-state plasma canagliflozin concentrations were reached by Day 4 in all active treatment groups. Pharmacodynamic effects were dose- and exposure-dependent. All canagliflozin doses decreased RTG , increased UGE0-24h , and reduced MPG0-24h versus placebo on Days 1 and 7. On Day 7, placebo-subtracted least-squares mean decreases in MPG0-24h ranged from 42-57 mg/dL with canagliflozin treatment. Adverse events (AEs) were balanced between treatments; no treatment-related serious AEs, AE-related discontinuations, or clinically meaningful adverse changes in routine safety evaluations occurred. The observed pharmacokinetic/pharmacodynamic profile of canagliflozin in subjects with type 2 diabetes supports a once-daily dosing regimen.

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