Evidence map›Paper›PMID 29134606›Full record

ArticleDiabetes therapy : research, treatment and education of diabetes and related disorders2018

Intravenous Ferric Carboxymaltose in Patients with Type 2 Diabetes Mellitus and Iron Deficiency: CLEVER Trial Study Design and Protocol.

Christoph Schindler, Andreas L Birkenfeld, Markolf Hanefeld, Ulrike Schatz, Carsta Köhler, Martin Grüneberg, Diethelm Tschöpe, Matthias Blüher, Christoph Hasslacher, Stefan R Bornstein

Erratum issued Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Diabetes therapy : research, treatment and education of diabetes and related disorders, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT01513369 (Intravenous Ferric Carboxymaltose for Improvement of Metabolic Parameters and Vascular Function in T2DM-patients With Iron Deficiency), which is not on this map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.4field-weighted citation impact, top 35% 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.

NCT01513369 phase3completednot on this map

Intravenous Ferric Carboxymaltose for Improvement of Metabolic Parameters and Vascular Function in T2DM-patients With Iron Deficiency

TypeinterventionalSponsorGWT-TUD GmbHRan2012 to 2019Enrolled152ConditionsType 2 Diabetes Mellitus, Iron DeficiencyArmsferric carboxymaltose, NaCl (0,9%)
3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 16 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. The Association Between Cost-Related Non-Adherence Behaviors and Diabetes Outcomes.Journal of the American Board of Family Medicine : JABFM · 2023
    Article
  7. Article
  8. Iron deficiency as energetic insult to skeletal muscle in chronic diseases.Journal of cachexia, sarcopenia and muscle · 2018
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 1 country.

Christoph SchindlerClinical Research Center Hannover and Center for Pharmacology and Toxicology, Hannover Medical School, Hannover, Germany. schindler.christoph@mh-hannover.de.
Andreas L BirkenfeldMedical Clinic and Policlinic III at the University Hospital Dresden, Dresden, Germany.
Markolf HanefeldCentre for Metabolic Vascular Medicine, GWT-TUD, Dresden, Germany.
Ulrike SchatzMedical Clinic and Policlinic III at the University Hospital Dresden, Dresden, Germany.
Carsta KöhlerMedical Consulting, GWT-TUD, Dresden, Germany.
Martin GrünebergDiabetes Center Herne, Herne, Germany.
Diethelm TschöpeHerz- und Diabeteszentrum Nordrhein-Westfalen, Ruhr-Universität Bochum, Bad Oeynhausen, Germany.
Matthias BlüherDepartment of Medicine at the University Hospital Leipzig, Leipzig, Germany.
Christoph HasslacherDiabetesinstitut Heidelberg and Department of Clinical Studies, St. Josefskrankenhaus Heidelberg, Heidelberg, Germany.
Stefan R BornsteinMedical Clinic and Policlinic III at the University Hospital Dresden, Dresden, Germany.
GWT-TUD (Germany) · DEDiabetesinstitut Heidelberg · DEHeart and Diabetes Center North Rhine-Westphalia · DEMedizinische Hochschule Hannover · DEUniversity Hospital Leipzig · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionHbA1c is the gold standard for glycemic control in pre-diabetes and diabetes. However, its validity has been questioned, especially in the presence of imbalanced iron homeostasis. The CLEVER trial aims to evaluate the relationship between iron deficiency and HbA1c (a biomarker for the diagnosis and therapeutic monitoring of type 2 diabetes) in a randomized, placebo-controlled, multicenter clinical trial.

methodsThe CLEVER (intravenous ferric CarboxymaLtosE for improVement of mEtabolic parameters in type 2 diabetes patients with iRon deficiency) trial is a randomized, single-blind, proof-of-concept study with two treatment arms. 140 men and women diagnosed with type 2 diabetes and iron deficiency will receive either placebo or ferric carboxymaltose (500 or 1000 mg) as intravenous infusions. The primary outcome measure is the change in HbA1c level between baseline and after 12 weeks of treatment. Secondary endpoints include change of iron status and metabolic markers as well as treatment safety and tolerability. Furthermore, the potential clinical improvement in quality of life and the reliability of HbA1c measurement in patients with type 2 diabetes and iron deficiency will be investigated.

resultsBoth excessive iron and iron deficiency are associated with metabolic disorders; excessive iron is a risk factor for the development of diabetes, whereas iron deficiency is associated with obesity and insulin resistance. It has been suggested that iron increases insulin secretion in pancreatic beta-cells. CLEVER is the first study to investigate the hypothesis that intravenous substitution with ferric carboxymaltose reduces HbA1c levels in patients with type 2 diabetes and iron deficiency, thereby improving metabolic status and quality of life. CLINICAL

trial registrationClinicalTrials.gov (NCT01513369).

fundingGWT-TUD GmbH acts as sponsor of the clinical trial. Financial support is provided by Vifor Pharma.

Indexed as

Ferinject®Ferric carboxymaltoseHbA1cIntravenousIron deficiencyType 2 diabetes mellitus

Identifiers

PMID29134606
PMCPMC5801218
OpenAlexW2768481381

What OpenQuestion holds

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Registered trials

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.