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Iron-Based Phosphate Binder

Ferric Citrate for Chronic Kidney Disease (FIT4KID Trial)

Phase 2
Recruiting
Led By Isidro B Salusky, MD
Research Sponsored by University of California, Los Angeles
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Serum phosphate within age appropriate normal levels
Ages 6 to 17 years (inclusive)
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 6 months and 12 months
Awards & highlights

FIT4KID Trial Summary

This trial will assess the effects of therapy with FC on changes in iFGF23 levels in 160 pediatric patients with CKD stages 3-4. Participants will be randomized to one of the two groups: 1) FC or 2) FC placebo.

Who is the study for?
This trial is for children aged 6-17 with moderate chronic kidney disease (stages 3-4) who have normal phosphate levels and can swallow tablets. They should be on stable doses of certain medications like growth hormone or iron supplements for at least two weeks before the study starts, and they must be able to eat at least two meals a day.Check my eligibility
What is being tested?
The trial is testing if ferric citrate (FC) affects a hormone called iFGF23 in kids with kidney disease over a year. It's a double-blind study, meaning neither the participants nor the researchers know who gets FC or placebo. Kids are randomly chosen to get either FC or fake pills that look like FC.See study design
What are the potential side effects?
Possible side effects from ferric citrate may include digestive issues such as diarrhea or constipation, nausea, vomiting, and potential changes in blood tests related to iron levels.

FIT4KID Trial Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
Select...
My blood phosphate levels are normal for my age.
Select...
I am between 6 and 17 years old.
Select...
I can swallow pills.

FIT4KID Trial Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~6 months and 12 months
This trial's timeline: 3 weeks for screening, Varies for treatment, and 6 months and 12 months for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Safety of Ferric Citrate
Tolerability of Ferric Citrate
iFGF23 levels
Secondary outcome measures
Effects on 1,25 D
Effects on Ferritin
Effects on Hemoglobin
+2 more

Side effects data

From 2019 Phase 4 trial • 55 Patients • NCT03079869
74%
Black stool
37%
Diarrhea
15%
Constipation
7%
Bloating/Gas
7%
Itching/rash
7%
Fatigue
7%
Arteriovenous fistula
7%
Upper Respiratory Infection
4%
Right hip osteoporotic Fracture
4%
Left heel ulcers
4%
Critical limb ischemia
4%
Peripheral vascular disease
4%
Nausea, vomiting
4%
Abdominal pain
4%
Laparoscopic right nephrectomy
4%
Gastrointestinal Hemorrhage
4%
Hematochezia
4%
Chronic back pain
4%
Left foot pain
4%
Urinary Tract Infection
100%
80%
60%
40%
20%
0%
Study treatment Arm
Ferric Citrate - Hemodialysis
Ferric Citrate - Peritoneal Dialysis

FIT4KID Trial Design

2Treatment groups
Experimental Treatment
Placebo Group
Group I: Treatment ArmExperimental Treatment1 Intervention
During the 12-month trial, participants will be given a fixed weight-based dose of Ferric Citrate (FC). The full medication dose will be 3g/day for participants weighing <31 kg, 5g/day for those weighing >31 - <51 kg, and 6g/day for participants >51 kg. These doses will be divided into three doses to be taken with meals.
Group II: Control ArmPlacebo Group1 Intervention
During the 12-month trial, participants will be given a fixed weight-based dose of Placebo. The full medication dose will be 3g/day for participants weighing <31 kg, 5g/day for those weighing >31 - <51 kg, and 6g/day for participants >51 kg. These doses will be divided into three doses to be taken with meals.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Tetraferric tricitrate decahydrate
FDA approved

Find a Location

Who is running the clinical trial?

University of California, Los AngelesLead Sponsor
1,530 Previous Clinical Trials
10,278,042 Total Patients Enrolled
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)NIH
2,359 Previous Clinical Trials
4,315,335 Total Patients Enrolled
Isidro B Salusky, MDPrincipal InvestigatorUniversity of California, Los Angeles
1 Previous Clinical Trials
61 Total Patients Enrolled

Media Library

Ferric Citrate (Iron-Based Phosphate Binder) Clinical Trial Eligibility Overview. Trial Name: NCT04741646 — Phase 2
Chronic Kidney Disease Research Study Groups: Treatment Arm, Control Arm
Chronic Kidney Disease Clinical Trial 2023: Ferric Citrate Highlights & Side Effects. Trial Name: NCT04741646 — Phase 2
Ferric Citrate (Iron-Based Phosphate Binder) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04741646 — Phase 2

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

Are patients currently being enrolled in this clinical trial?

"That is correct, the clinical trial described on clinicaltrials.gov is currently looking for patients to enroll. The first posting was on May 16th, 2022 and the most recent update was September 1st, 2022. In total, they need 160 participants from 12 different sites."

Answered by AI

What are the primary goals of this particular clinical trial?

"The primary outcome variable that will be assessed over the course of 6 and 12 months is Ferric Citrate's Tolerability. Additionally, investigators will also compare FC to Placebo in terms of 1,25 D (Decrease), Ferritin (Increase), and Hemoglobin (Increase)."

Answered by AI

How many people are involved in this experiment?

"One hundred and sixty individuals that meet the pre-specified inclusion criteria are needed to complete this clinical trial. Patients can choose to participate at St. Christopher's Hospital for Children in Philadelphia, Pennsylvania or Emory University in Atlanta, Georgia (among other sites)."

Answered by AI

What is the innovation behind this clinical trial?

"Ferric Citrate has been trialed 5 times in the last year across 29 cities and 3 countries. The first study was completed in 2020 by Panion & BF Biotech Inc. In total, 200 participants were involved in the Phase 3 drug approval process. Since then, 18305 other trials have concluded."

Answered by AI

Can minors join this clinical trial?

"This particular study is only for children aged 6 to 17. Out of the 477 clinical trials that exist for people over 65, this one is special because it includes 46 trials specifically designed for children."

Answered by AI

What are some common applications of Ferric Citrate?

"Ferric Citrate is a medication most often used to treat hyperphosphataemia. It can also help patients who suffer from conditions like chronic kidney disease and dialysis therapy, but are not currently on dialysis."

Answered by AI

At how many hospitals or research centers is this investigation being conducted?

"In addition to St. Christopher's Hospital for Children in Philadelphia, Pennsylvania, Emory University in Atlanta, Georgia, and University of California, Los Angeles in Los Angeles, California; this clinical trial is also being conducted at 12 other medical facilities."

Answered by AI

Is this the first time that Ferric Citrate has been tested in a clinical setting?

"Ferric Citrate was first trialed in 2020 at the Division of Nephrology, Department of Internal Medicine, Taipei Veterans General Hospital. So far, a total of 18305 studies have been completed. There are 5 active studies currently underway--a large number taking place in Philadelphia, Pennsylvania."

Answered by AI

What governmental agency regulates Ferric Citrate?

"While Phase 2 trials don't have data supporting efficacy, Ferric Citrate has some safety data, so it received a score of 2."

Answered by AI

Could I potentially qualify to participate in this research?

"This clinical trial is looking for 160 participants aged 6-17 who suffer from kidney disease. In addition, the following must be true of potential patients: they must be willing and able to follow the study treatment and comply with recommendations from site investigators; have a normal level of serum phosphate; have a ferritin level below 500 ng/ml and TSAT level below 50%; if they are being treated with growth hormone, calcitriol, nutritional vitamin d, iron or ESAs, those treatments must have had stable dosing for at least 2 weeks prior to screening; finally, they must be able to swallow tablets and eat at least two"

Answered by AI

Who else is applying?

What site did they apply to?
University of California, Los Angeles
What portion of applicants met pre-screening criteria?
Met criteria
~72 spots leftby Dec 2025