Evidence map›Paper›PMID 31562751›Full record

ArticleESC heart failure2019

Rationale and design of the IRON-CRT trial: effect of intravenous ferric carboxymaltose on reverse remodelling following cardiac resynchronization therapy.

Pieter Martens, Matthias Dupont, Jeroen Dauw, Frauke Somers, Lieven Herbots, Philippe Timmermans, Jan Verwerft, Wilfried Mullens

Open access · goldAbstract readClinical Trial Protocol
In one paragraph

Article in ESC heart failure, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.8field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 17 citations in OpenAlex.

  1. Trial
  2. Iron Deficiency as a Modifiable Risk Factor in Heart Failure: Evidence and Recommendations.American journal of cardiovascular drugs : drugs, devices, and other interventions · 2026
    Review
  3. Article
  4. Treatment of Iron Deficiency in Heart Failure.Current cardiology reports · 2023
    Review
  5. Review
  6. Iron deficiency in heart failure.ESC heart failure · 2021
    Review
  7. Article
  8. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Pieter MartensDepartment of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.
Matthias DupontDepartment of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.
Jeroen DauwDepartment of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.
Frauke SomersDepartment of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.
Lieven HerbotsDepartment of Cardiology, Jessa Ziekenhuis, Hasselt, Belgium.
Philippe TimmermansDepartment of Cardiology, Jessa Ziekenhuis, Hasselt, Belgium.
Jan VerwerftDepartment of Cardiology, Jessa Ziekenhuis, Hasselt, Belgium.
Wilfried MullensDepartment of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.
Ziekenhuis Oost-Limburg · BEJessa Hospital · BEHasselt University · BE

Funding

Research Foundation-Flanders 1127917N
6 · The paper itself

Abstract

aimsIron deficiency is common in heart failure with reduced ejection fraction (HFrEF). In patients with cardiac resynchronization therapy (CRT), it is associated with a diminished reverse remodelling response and poor functional improvement. The latter is partially related to a loss in contractile force at higher heart rates (negative force-frequency relationship). METHODS AND

resultsThe effect of intravenous ferric carboxymaltose on reverse remodelling following cardiac resynchronization therapy (IRON-CRT) trial is a multicentre, prospective, randomized, double-blind controlled trial in HFrEF patients who experienced incomplete reverse remodelling (defined as a left ventricular ejection fraction below <45%) at least 6 months after CRT. Additionally, patients need to have iron deficiency defined as a ferritin below 100 μg/L irrespective of transferrin saturation or a ferritin between 100 and 300 μg/L with a transferrin saturation <20%. Patients will be randomized to either intravenous ferric carboxymaltose (dose based according to Summary of Product Characteristics) or intravenous placebo. The primary objective is to evaluate the effect of ferric carboxymaltose on metrics of cardiac reverse remodelling and contractility, measured by the primary endpoint, change in left ventricular ejection fraction assessed by three-dimensional (3D) echo from baseline to 3 month follow-up and the secondary endpoints change in left ventricular end-systolic and end-diastolic volume. The secondary objective is to determine if ferric carboxymaltose is capable of improving cardiac contractility in vivo, by assessing the force-frequency relationship through incremental biventricular pacing. A total of 100 patients will be randomized in a 1:1 fashion.

conclusionsThe IRON-CRT trial will determine the effect of ferric carboxymaltose on cardiac reverse remodelling and rate-dependent cardiac contractility in HFrEF patients.

Indexed as

Ferric CompoundsIron DeficienciesAdministration, IntravenousAdultCardiac Resynchronization TherapyDouble-Blind MethodFemaleHeart FailureHumansMaleMaltoseMulticenter Studies as TopicProspective StudiesRandomized Controlled Trials as TopicVentricular Remodelingferric carboxymaltoseFerric CompoundsMaltoseCardiac remodellingContractilityHeart failureIron deficiency

Identifiers

PMID31562751
PMCPMC6989286
OpenAlexW2975488706

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.