Related Experiment Video

Updated: Jan 17, 2026

High-throughput Screening for Small-molecule Modulators of Inward Rectifier Potassium Channels
10:07

High-throughput Screening for Small-molecule Modulators of Inward Rectifier Potassium Channels

Published on: January 27, 2013

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Where next for potassium binders in hemodialysis?

Katherine Scovner Ravi1, Finnian R Mc Causland1

  • 1Renal Division, Brigham and Women's Hospital, Boston, Massachusetts, USA; Harvard Medical School, Boston, Massachusetts, USA.

Kidney International
|September 20, 2025
PubMed

Insights

Sodium zirconium cyclosilicate improved potassium control in hemodialysis patients but did not reduce cardiovascular events. The DIALIZE-Outcomes trial was terminated early due to low event accrual and high discontinuation rates.

Area of Science:

  • Nephrology
  • Cardiology
  • Clinical Trials

Background:

  • Hyperkalemia is a common complication in hemodialysis patients, increasing mortality risk.
  • Effective management of hyperkalemia is crucial for improving patient outcomes.

Purpose of the Study:

  • To evaluate the efficacy of sodium zirconium cyclosilicate, an oral potassium binder, in reducing cardiovascular events in hemodialysis patients.
  • To assess the safety and tolerability of sodium zirconium cyclosilicate in this population.

Main Methods:

  • The DIALIZE-Outcomes trial was a prospective study investigating sodium zirconium cyclosilicate versus placebo.
  • The study was terminated early due to low event accrual and high medication discontinuation rates.

Main Results:

  • No significant difference in cardiovascular outcomes was observed between the sodium zirconium cyclosilicate and placebo groups.
  • Sodium zirconium cyclosilicate demonstrated improved control of serum potassium levels.

Conclusions:

  • Despite achieving better potassium control, sodium zirconium cyclosilicate did not show a reduction in cardiovascular events in the DIALIZE-Outcomes trial.
  • Trial limitations included early termination and high discontinuation rates, necessitating further research.

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