Evidence map›Paper›PMID 19996119›Full record

ArticleHaematologica2009

Results of the first international round robin for the quantification of urinary and plasma hepcidin assays: need for standardization.

Joyce J C Kroot, Erwin H J M Kemna, Sukhvinder S Bansal, Mark Busbridge, Natascia Campostrini, Domenico Girelli, Robert C Hider, Vasiliki Koliaraki, Avgi Mamalaki, Gordana Olbina and 6 more

Open access · goldAbstract read
In one paragraph

Article in Haematologica, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 1 pooled it
11.5field-weighted citation impact, top 1% 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

56 citing papers in PubMed, 1 synthesis or guideline pooled it, 178 citations in OpenAlex.

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  11. Epstein-Barr Virus Infection Is Associated with Elevated Hepcidin Levels.International journal of molecular sciences · 2023
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

16 authors at 10 institutions in 6 countries.

Joyce J C KrootDepartment of Clinical Chemistry, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands.
Erwin H J M Kemna
Sukhvinder S Bansal
Mark Busbridge
Natascia Campostrini
Domenico Girelli
Robert C Hider
Vasiliki Koliaraki
Avgi Mamalaki
Gordana Olbina
Naohisa Tomosugi
Chris Tselepis
Douglas G Ward
Tomas Ganz
Jan C M Hendriks
Dorine W Swinkels
Radboud University Medical Center · NLKing's College London · GBRadboud University Nijmegen · NLUniversity of Birmingham · GBUniversity of Verona · ITHammersmith Hospital · GBIntrinsic LifeSciences (United States) · USKanazawa Medical University · JPPasteur Hellenic Institute · GRUniversity of California, Los Angeles · US

Funding

The role of erythroferrone in iron homeostasis and in iron-loading anemiasR01DK065029 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI GANZ, TOMAS · 2004 to 2017
$4.9M
6 · The paper itself

Abstract

The recently discovered iron regulatory peptide hormone hepcidin holds promise as a novel biomarker in iron metabolism disorders. To date, various mass spectrometry and immunochemical methods have been developed for its quantification in plasma and urine. Differences in methodology and analytical performance hinder the comparability of data. As a first step towards method harmonization, several hepcidin assays were compared. Worldwide eight laboratories participated in a urinary and plasma round robin in which hepcidin was analyzed. For both urine and plasma: (i) the absolute hepcidin concentrations differed widely between methods, (ii) the between-sample variation and the analytical variation of the methods are similar. Importantly, the analytical variation as percentage of the total variance is low for all methods, indicating their suitability to distinguish hepcidin levels of different samples. Spearman correlations between methods were generally high. The round robin results inform the scientific and medical community on the status and agreement of the current hepcidin methods. Ongoing initiatives should facilitate standardization by exchanging calibrators and representative samples.

Indexed as

Antimicrobial Cationic PeptidesBiomarkersClinical Laboratory TechniquesHepcidinsHumansImmunohistochemistryInternational CooperationIron Metabolism DisordersMass SpectrometryReference StandardsAntimicrobial Cationic PeptidesBiomarkersHAMP protein, humanHepcidins

Identifiers

PMID19996119
PMCPMC2791950
OpenAlexW2121300659

What OpenQuestion holds

Textmetadata
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.