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Study to Evaluate the Safety and Tolerability of KRX-0502 (Ferric Citrate) in Children With Iron Deficiency Anemia Associated With Non-Dialysis Dependent Chronic Kidney Disease

A 24-Week, Open-Label, Randomized, 2-Arm Study to Evaluate the Safety and Tolerability of KRX-0502 (Ferric Citrate) in Children With Iron Deficiency Anemia Associated With Non-Dialysis Dependent Chronic Kidney Disease

Status
Withdrawn
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04649411
Enrollment
0
Registered
2020-12-02
Start date
2025-01-31
Completion date
2027-03-31
Last updated
2025-11-20

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

Conditions

Iron Deficiency Anemia Associated With Non-Dialysis Dependent Chronic Kidney Disease

Keywords

Iron Deficiency Anemia, Non-Dialysis Dependent Chronic Kidney Disease, CKD, ferric citrate, pediatric, dialysis

Brief summary

This study will be conducted to evaluate the safety and tolerability of ferric citrate in pediatric participants with iron deficiency anemia (IDA) associated with non-dialysis dependent chronic kidney disease (NDD-CKD).

Interventions

oral tablets

DRUGstandard of care

administered per the approved label and at the Investigator's discretion

Sponsors

Keryx Biopharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
6 Years to 18 Years
Healthy volunteers
No

Inclusion criteria

* Age 6 years to \<18 years at Screening * Body Weight ≥12 kilograms (kg) at Screening * Chronic kidney disease (CKD) stage 3 to 5, not on dialysis, with estimated glomerular filtration rate (eGFR) \<60 milliliters per minute (mL/min)/1.73 meters squared (m\^2) utilizing the Bedside Schwartz equation * Hemoglobin (Hgb) ≥8.5 and ≤11.5 grams per deciliter (g/dL) at Screening * Transferrin saturation (TSAT) ≤25% at Screening * Ferritin ≤200 nanograms per milliliter (ng/mL) at Screening

Exclusion criteria

* Serum phosphorus level at Screening: * 6 to \<13 years: ≤4.0 milligrams per deciliter (mg/dL); * 13 to \<18 years: ≤2.7 mg/dL * Liver transaminases (aspartate aminotransferase \[AST\] and/or alanine aminotransferase \[ALT\]) ˃3× the upper limit of normal at Screening * Active significant gastrointestinal (GI) disorder, including overt gastrointestinal (GI) bleeding or active inflammatory bowel disease * Unable to swallow pills * Anemia due to causes other than iron deficiency anemia (IDA) of CKD * Intravenous iron therapy or blood transfusion within 4 weeks before the Screening visit * Participants with a functioning organ transplant * Receipt of any investigational drug within 4 weeks before Screening * Phosphate binder use during the Screening period

Design outcomes

Primary

MeasureTime frame
Number of Participants with Serious and Non-serious Treatment-emergent Adverse Eventsup to Week 28
Number of Participants with Clinically Significant Laboratory Abnormalities or Changes in Laboratory Resultsup to Week 24
Number of Participants with Treatment-emergent Adverse Events Leading to the Discontinuation of Ferric Citrateup to Week 28

Secondary

MeasureTime frame
Change from Baseline in Serum Phosphorus to Week 24/Early Termination VisitBaseline; Week 24
Change from Baseline in Hemoglobin to Week 24/Early Termination VisitBaseline; Week 24
Change from Baseline in Bicarbonate to Week 24/Early Termination VisitBaseline; Week 24
Change from Baseline in Calcium to Week 24/Early Termination VisitBaseline; Week 24
Change from Baseline in Transferrin Saturation (TSAT) to Week 24/Early Termination VisitBaseline; Week 24
Change from Baseline in Ferritin to Week 24/Early Termination VisitBaseline; Week 24

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026