The Iron and Muscle Study

Summary

This is a multi-center randomized controlled trial that will examine the efficacy of IV iron supplementation when compared to placebo, with and without exercise training, on changes in patient exercise capacity. The study aims to provide sufficient data to inform a power calculation for the definitive study to examine whether IV iron therapy in patients with CKD stages 3-4 (non-dialysis) can improve exercise capacity, muscle metabolism and physical function. Specifically, we propose to examine whether a strategy of IV iron therapy in patients with stages 3-4 CKD who are iron-deficient but NOT anaemic leads to improvements in exercise capacity.

Very little is currently known about the effects of iron deficiency on cardiac or skeletal muscle metabolism in patients suffering from CKD. Nevertheless, it seems likely that iron deficiency will contribute to mitochondrial dysfunction and reduced energy production in cardiac or skeletal muscle of CKD patients, and importantly may contribute to the reduced exercise capacity, physical function and overwhelming fatigue commonly reported in this population. The results of this trial will provide data to ascertain whether intravenous iron therapy might be beneficial to exercise capacity, muscle metabolism, physical function, and fatigue and whether iron repletion enhances the effect of an exercise intervention.

Conditions

• CKD Stage 3
• CKD Stage 4
• Iron-deficiency

Interventions

DRUG

Ferinject

Active study medication Medication name: Ferinject® Active ingredient: Ferric carboxymaltose Dosage form: 50 mg iron/ml solution for injection/infusion. Appearance: Dark brown, non-transparent aqueous solution Excipients: Sodium hydroxide, hydrochloric acid and water for injection Strength/Packaging: Each 2 ml vial contains 100 mg of iron as ferric carboxymaltose. Each 10 ml vial contains 500 mg of iron as ferric carboxymaltose. Each 20 ml vial contains 1,000 mg of iron as ferric carboxymaltose. Manufacturer: Vifor Pharma UK Limited

OTHER

Placebo: NaCl (sodium chloride 0.9%)

Medication name: NaCl (sodium chloride 0.9%) Active ingredient: NaCl (sodium chloride 0.9%) Dosage form: 0.9% w/v NaCl as sterile solution in water for injection Excipients: Water Strength/Packaging: 100 ml container with 100 ml normal saline Manufacturer: As per local hospital supplier

Sponsors & Collaborators

• King's College London

  collaborator OTHER

• University of Leicester

  collaborator OTHER

• King's College Hospital NHS Trust

  lead OTHER

Principal Investigators

• Kate Bramham · Kings College Hospital NHS Foundation Trust

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

80 Years

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2019-04-26

Primary Completion

2021-12-21

Completion

2022-02-21

Countries

• United Kingdom

Study Locations