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A Pilot Study of KRX-0502 (Ferric Citrate, Administered Without Food, in Treating Iron-deficiency Anemia

A Phase 2 Pilot Study of KRX-0502 (Ferric Citrate) in Treating Iron-deficiency Anemia in Patients With Stage 3-5 Non-dialysis Dependent Chronic Kidney Disease (NDD-CKD)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02128074
Enrollment
32
Registered
2014-05-01
Start date
2014-04-30
Completion date
2014-11-30
Last updated
2018-08-24

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

Conditions

Anemia of Chronic Kidney Disease

Brief summary

The objective of the study is to evaluate the efficacy and safety of KRX-0502, administered without food, in treating iron deficiency anemia in subjects with stage 3 to 5 non-dialysis dependent chronic kidney disease (NDD-CKD).

Detailed description

Previous clinical trials have tested KRX-0502 administered with food, in dialysis-dependent and NDD-CKD patients. This clinical trial will evaluate the safety and efficacy of KRX-0502 in treating iron deficiency anemia in anemic, stage III to V NDD-CKD patients in a new dosing regimen (without food).

Interventions

1g tablets of KRX-0502

Sponsors

Keryx Biopharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Males and non-lactating females with negative serum pregnancy test (for females of child-bearing potential) at Screening * Age ≥ 18 years * Serum ferritin ≤ 300 ng/mL and TSAT ≤ 25% at Screening * Hemoglobin ≥9.0 g/dL and ≤11.5 g/dL at Screening * eGFR \<60 mL/min at Screening using the 4-variable Modification of Diet in Renal Disease (MDRD) equation

Exclusion criteria

* Subjects receiving phosphate binder medication(s) at, or within 4 weeks prior to, screening * Symptomatic gastrointestinal bleeding, inflammatory bowel disease, inflammatory bowel syndrome and/or Crohn's Disease within 24 weeks prior to \\ Screening * Evidence of acute kidney injury or requirement for dialysis within 8 weeks prior to Screening * Kidney transplant anticipated or start of dialysis expected within 16 weeks of Screening * History of hemochromatosis * IV iron administered within 4 weeks prior to Screening * Erythropoiesis-Stimulating Agent (ESA) administered within 4 weeks prior to Screening * Blood transfusion within 4 weeks prior to Screening * Receipt of any investigational drug within 4 weeks prior to Screening * Cause of anemia other than iron deficiency or chronic kidney disease * History of malignancy in the last five years * Active drug or alcohol dependence or abuse (excluding tobacco use) within the 12 months prior to Screening * Any known allergies to iron products * Previous intolerance to oral ferric citrate * Psychiatric disorder that interferes with the subject's ability to comply with the study protocol * Planned surgery or hospitalization during the trial * Any other medical condition that, in the opinion of the PI, renders the subject unable to or unlikely to complete the trial or that would interfere with optimal participation in the trial or produce significant risk to the subject

Design outcomes

Primary

MeasureTime frame
Change in Hemoglobin From Baseline to the End of 8-week Treatment Period8 weeks

Countries

Israel

Participant flow

Participants by arm

ArmCount
KRX-0502
KRX-0502 (ferric citrate) KRX-0502: 1g tablets of KRX-0502
32
Total32

Baseline characteristics

CharacteristicKRX-0502
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
24 Participants
Age, Categorical
Between 18 and 65 years
8 Participants
Age, Continuous69.3 years
STANDARD_DEVIATION 12.47
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
32 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
White
31 Participants
Sex: Female, Male
Female
15 Participants
Sex: Female, Male
Male
17 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
1 / 32
other
Total, other adverse events
25 / 32
serious
Total, serious adverse events
2 / 32

Outcome results

Primary

Change in Hemoglobin From Baseline to the End of 8-week Treatment Period

Time frame: 8 weeks

ArmMeasureGroupValue (MEAN)Dispersion
KRX-0502Change in Hemoglobin From Baseline to the End of 8-week Treatment PeriodBaseline10.8 g/dLStandard Deviation 0.77
KRX-0502Change in Hemoglobin From Baseline to the End of 8-week Treatment PeriodWeek 811.1 g/dLStandard Deviation 0.81

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