Not Yet RecruitingPhase 3

A Clinical Study of TS-172 in Hyperphosphatemia Patients on Peritoneal Dialysis

30 participantsStarted 2026-04

Plain-language summary

An open-label, single-arm clinical study of TS-172 in hyperphosphatemia patients on peritoneal dialysis

Age range18 Years

SexALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

✓. Hyperphosphatemia patients (outpatients) with chronic kidney disease receiving peritoneal dialysis (CAPD or APD) at least 12 weeks prior to Visit 1 (Week -4)
✓. Patients aged \>= 18 years at the time of obtaining informed consent
✓. Patients who are receiving at least one phosphate binder and whose dosing regimen for all phosphate-lowering agents (phosphate binder and tenapanor hydrochloride) has been unchanged during the last 4 weeks prior to Visit 1 (Week -4).
✓. Patients with serum phosphorus concentration of \>= 3.5 mg/dL and =\< 7.0 mg/dL at Visit 1 (Week -4)
✓. Patients whose serum phosphorus concentration at Visit 2 (Week -2) or Visit 3 (Week -1) or Visit 4 (Week 0) has increased by at least 1.0 mg/dL compared with the value at Visit 1 (Week -4) and is \>= 5.5 mg/dL and \< 10.0 mg/dL.

✕. Patients with confirmed serum intact PTH concentration \>500 pg/mL from Visit 1 (Week -4) to Visit 4 (Week 0)
✕. Patients with serum phosphorus concentration \>= 10.0 mg/dL from Visit 2 (Week -2) or Visit 3 (Week -1)
✕. Patients who have undergone previous parathyroid intervention (PTx, PEIT, etc.)

Achievement rate of the target serum phosphorus level

Timeframe: Week 8

NCT IDNCT07548853

SponsorTaisho Pharmaceutical Co., Ltd.

Sponsor typeINDUSTRY

Study typeINTERVENTIONAL

Primary completion2027-05-31

Taisho Pharmaceutical Co., Ltd.

Who can participate

Age range18 Years

SexALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

✓. Hyperphosphatemia patients (outpatients) with chronic kidney disease receiving peritoneal dialysis (CAPD or APD) at least 12 weeks prior to Visit 1 (Week -4)
✓. Patients aged \>= 18 years at the time of obtaining informed consent
✓. Patients who are receiving at least one phosphate binder and whose dosing regimen for all phosphate-lowering agents (phosphate binder and tenapanor hydrochloride) has been unchanged during the last 4 weeks prior to Visit 1 (Week -4).
✓. Patients with serum phosphorus concentration of \>= 3.5 mg/dL and =\< 7.0 mg/dL at Visit 1 (Week -4)
✓. Patients whose serum phosphorus concentration at Visit 2 (Week -2) or Visit 3 (Week -1) or Visit 4 (Week 0) has increased by at least 1.0 mg/dL compared with the value at Visit 1 (Week -4) and is \>= 5.5 mg/dL and \< 10.0 mg/dL.

✕. Patients with confirmed serum intact PTH concentration \>500 pg/mL from Visit 1 (Week -4) to Visit 4 (Week 0)
✕. Patients with serum phosphorus concentration \>= 10.0 mg/dL from Visit 2 (Week -2) or Visit 3 (Week -1)
✕. Patients who have undergone previous parathyroid intervention (PTx, PEIT, etc.)