Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT03427125 · ClinicalTrials.gov registry record · Phase 3

A Phase 3 Study of Tenapanor to Treat Hyperphosphatemia in ESRD Patients on Dialysis

A Phase 3 study, sponsored by Ardelyx.

Completed
Registry status
Phase 3
Development phase
1,559
Enrollment target

NCT03427125: Completed Phase 3 study, sponsored by Ardelyx.

NCT03427125 is a Phase 3 study that has completed, run by Ardelyx. The registered enrollment target is 1,559 participants, above the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (102% higher). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT03427125, a Phase 3 study, has completed, sponsored by Ardelyx.

COMPLETED
Registry status
Phase 3
Development phase
1,559 participants
Enrollment target

Study Summary

This Phase 3, 26-week, open label study with a 12-week, placebo-controlled, randomized withdrawal period followed by an open label long term safety extension will evaluate the safety and efficacy of tenapanor to treat hyperphosphatemia in end-stage renal disease (ESRD) on hemodialysis and peritoneal dialysis.

Primary Outcome

Patients with at least a 1.2 mg/dL decrease in serum phosphorus during the first 26 weeks of the study were defined as the responder population.

Interventions

  • DRUG Placebo
  • DRUG Tenapanor
  • DRUG Sevelamer Carbonate

Trial Details

FieldValue
Enrollment Target 1,559 participants
Start Date 2018-01-08
Est. Completion 2020-02-27
Phase Phase 3
Ardelyx

25 total trials

What the finished NCT03427125 record still lists

NCT03427125 is an interventional study that assigns participants to a tested intervention. Its 1,559 participants enrollment target places it among the larger protocols in the corpus, above the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (102% higher).

The record links to 0 conditions, and to 3 interventions - of which Placebo is the first listed.

NCT03427125 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT03427125 about?

NCT03427125 is a clinical study titled "A Phase 3 Study of Tenapanor to Treat Hyperphosphatemia in ESRD Patients on Dialysis". This Phase 3, 26-week, open label study with a 12-week, placebo-controlled, randomized withdrawal period followed by an open label long term safety extension will evaluate the safety and efficacy of tenapanor to treat hyperphosphatemia in end-stage renal disease (ESRD) on hemodialysis and peritoneal...

What is the current status of trial NCT03427125?

This trial is currently completed. It is a Phase 3 study. The enrollment target is 1,559 participants. The study started on 2018-01-08. Estimated completion is 2020-02-27.

What interventions are being tested in trial NCT03427125?

The interventions under investigation include: Placebo (DRUG), Tenapanor (DRUG), Sevelamer Carbonate (DRUG).

Who is sponsoring clinical trial NCT03427125?

This trial is sponsored by Ardelyx, which has 25 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT03427125's enrollment target sits among peer trials

1,559 150th of 2000 higher than 1,851 of 2,000 other Phase 3 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 3 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT06881069 · 1,560 participants · NA

    Reach Through Equitable Implementation in Utah

  • NCT06034080 · 1,566 participants · NA

    Interventions to De-implement Unnecessary Antibiotic Prescribing for Children With Ear Infections

  • NCT02650622 · 1,550 participants

    Genetic and Metabolic Disease in Children

  • NCT03961945 · 1,550 participants · NA

    Minimally Invasive Molecular Approaches for the Diagnosis of Barrett's Esophagus and Esophageal Adenocarcinoma

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT03427125, the US trial registry maintained by the National Library of Medicine. NCT03427125 (large enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.