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The effect of PHOSPHate control On Renal function in chronic kidney disease patients not on dialysis

The effect of PHOSPHate control On Renal function in chronic kidney disease patients not on dialysis - Phosphor study

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000025161
Enrollment
160
Registered
2016-12-16
Start date
2016-12-16
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

hyperphosphatemia chronic kidney disease (CKD)

Interventions

administration of ferric citrate for two years (daily dosage: 500-1500 mg) control group

Sponsors

Department of Internal medicine, Teikyo University School of Medicine
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: patients with estimated glomerular filtration rates (eGFR) >=15 to 45 mL/min/1.73 m2 and serum phosphate levels >=4.0 mg/dL patients with no acute change of renal function

Exclusion criteria

Exclusion criteria: 1. Administration contraindication of ferric citrate 2. History of hypersensitivity to ferric citrate 3. Iron excess such as hemochromatosis 4. Uncontrolled diabetes mellitus; HbA1c >=9.0 % (NGSP) 5. Uncontrolled hypertension; systolic blood pressure >=170 mmHg or diastolic blood pressure >=110 mmHg 6. Acute renal failure, nephrotic syndrome, dialysis, or renal transplantation 7. Complication or history of malignant tumor (not excluded from the study when the malignant tumor is not treated within 5 years and if there is no recurrence) 8. Pregnancy, nursing, or planned pregnancy during the study 9. Hormone replacement therapy with estrogens during the study 10. Intake of activated vitamin D or cinacalcet at the confirmation of eligibility 11. Ineligibility at the investigator's discretion

Design outcomes

Primary

MeasureTime frame
change from baseline in eGFR after 6, 12, 18, 24 months of follow-up

Secondary

MeasureTime frame
the time from randomization to the event of 30% decline in eGFR and the amount of change in serum phosphate, FGF23, intact PTH, calciprotein particles, ferritin, hemoglobin levels and the urinary phosphate levels

Countries

Japan

Contacts

Public ContactShunya Uchida

Teikyo University School of Medicine Department of Internal medicine

s-uchida@med.teikyo-u.ac.jp03-3964-1211

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026