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Your journey
1What's a trial
4Get in touch
More info
You can access this
clinical trial
if you have
Chronic Kidney Disease Requiring Chronic Dialysis
and you are
over 18
years old
This is a trial in the final phase before the treatment is released on the market.
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The purpose

This is a Phase 3, randomised, active controlled, multicentre study to investigate the safety and efficacy of PA21, a phosphate binder, for control of hyperphosphataemia in dialysis patients. The primary objective is to establish the efficacy of PA21 for lowering phosphate levels in these patients.

Provided treatments

  • Drug: PA21 (2.5 g tablet containing 500 mg iron)
  • Drug: Sevelamer carbonate
  • Drug: PA21-1 (1.25 g tablet containing 250 mg iron)

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT01324128. The sponsor of the trial is Vifor Inc. and it is looking for 1059 volunteers for the current phase.
Official trial title:
An Open-label, Randomised, Active-controlled, Parallel Group, Multicentre, Phase 3 Study to Investigate the Safety and Efficacy of PA21 Compared With Sevelamer Carbonate Followed by a Randomised Comparison of PA21 Maintenance Dose Versus PA21-Low Dose in Dialysis Patients With Hyperphosphataemia