4.6 Article

Effects of canagliflozin on serum potassium in the CANagliflozin cardioVascular Assessment Study (CANVAS) Program

Journal

CLINICAL KIDNEY JOURNAL
Volume 14, Issue 5, Pages 1396-1402

Publisher

OXFORD UNIV PRESS
DOI: 10.1093/ckj/sfaa133

Keywords

canagliflozin; hyperkalemia; potassium; SGLT2 inhibitor; Type 2 diabetes

Funding

  1. Janssen Research & Development, LLC

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The study showed that there were no significant effects of canagliflozin on serum potassium levels in the overall population or key subgroups in the CANVAS Program. Adverse events of hyperkalemia were uncommon and occurred at comparable rates with canagliflozin and placebo.
Background. The sodium-glucose cotransporter 2 inhibitor canagliflozin has been shown to reduce the risk of cardiovascular and renal events in patients with Type 2 diabetes mellitus and high risk. Pooled analyses of data from early studies and interim data from the CANagliflozin cardioVascular Assessment Study (CANVAS) suggested that canagliflozin might lead to increases in serum potassium, particularly the 300mg dose in patients with renal impairment, which is important because high serum potassium is associated with increased cardiovascular and renal risk. We examined the effect of canagliflozin on serum potassium levels and hyperkalemia rates in the completed CANVAS Program. Methods. The CANVAS Program (n=10,142) was comprised of two comparable double-blind, randomized, placebo-controlled trials (CANVAS and CANVAS-Renal). Participants received canagliflozin 100 or 300mg or placebo. Serum potassium measurements were performed in a central laboratory0 and assessed at similar to 6-month intervals. Results. In the CANVAS Program, mean potassium levels were generally consistent with canagliflozin and placebo, overall and by baseline estimated glomerular filtration rate (eGFR; >= 60, 45 to<60 and <45mL/min/1.73m(2)). The risk of increased or decreased potassium was similar with canagliflozin and placebo overall and by baseline eGFR (all P-heterogeneity >= 0.56) or use of renin-angiotensin-aldosterone system inhibitors (all P-heterogeneity >= 0.71); levels did not appear different by canagliflozin dose. Hyperkalemia {hazard ratio (HR) [95% confidence interval (CI)] 1.60 (0.92-2.81)} and serious hyperkalemia [HR (95% CI) 0.75 (0.27-2.11)] adverse events were not different across groups. Conclusions. In the CANVAS Program, there were no meaningful effects of canagliflozin on serum potassium in the overall population or key subgroups. Hyperkalemia adverse events were uncommon and occurred at comparable rates with canagliflozin and placebo.

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