Evidence map›Paper›PMID 40097333›Full record

ArticleJournal of inherited metabolic disease2025

Performance of Relative Exchangeable Copper for the Diagnosis of Wilson Disease in Acute Liver Failure.

Daniela Spirea, Claire Vanlemmens, François Parant, Teresa Antonini, Muriel Bost, Alain Lachaux, Abdelouahed Belmalih, Olivier Guillaud, Jerome Dumortier, Eduardo Couchonnal

Abstract read
In one paragraph

Article in Journal of inherited metabolic disease, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
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

4 citing papers in PubMed.

  1. Review
  2. Relative Exchangeable and Exchangeable Copper: Emerging New Biomarkers for Diagnosis and Therapy Monitoring in Wilson's Disease.Liver international : official journal of the International Association for the Study of the Liver · 2026
    Article
  3. Article
  4. 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

10 authors.

Daniela SpireaPediatric Gastroenterology, Children Clinical Hospital of Brasov, Brasov, Romania.
Claire VanlemmensHepatology and Intensive Digestive Care Department, Hôpital Jean Minjoz, Besançon, France.
François ParantDepartment of Biochemistry, Hôpital Lyon Sud, Hospices Civils de Lyon, Pierre-Bénite, France.
Teresa AntoniniDepartment of Hepatology, Croix Rousse University Hospital, Hospices Civils de Lyon, Lyon, France.
Muriel BostDepartment of Biochemistry, Hôpital Lyon Sud, Hospices Civils de Lyon, Pierre-Bénite, France.
Alain LachauxNational Reference Center for Wilson Disease, Hôpital Femme-Mère-Enfant, Hospices Civils de Lyon, Bron, France.
Abdelouahed BelmalihNational Reference Center for Wilson Disease, Hôpital Femme-Mère-Enfant, Hospices Civils de Lyon, Bron, France.
Olivier GuillaudNational Reference Center for Wilson Disease, Hôpital Femme-Mère-Enfant, Hospices Civils de Lyon, Bron, France.
Jerome DumortierClaude Bernard Lyon 1 University, Lyon, France.
Eduardo CouchonnalNational Reference Center for Wilson Disease, Hôpital Femme-Mère-Enfant, Hospices Civils de Lyon, Bron, France.ORCID https://orcid.org/0000-0003-4595-9672

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Acute liver failure (ALF) can be one of the manifestations of Wilson disease (WD), and due to its severity, prompt diagnosis is essential. A ratio > 15% of the exchangeable copper to total serum copper, known as relative exchangeable copper (REC), has been shown to have a 100% sensitivity and specificity for the diagnosis of WD but this has not yet been studied in an ALF setting. Patients diagnosed with ALF from 1 November 2011 to 31 December 2023, with available REC determination during the acute event, were included. Thirty-three patients were included (11 with WD and 22 without WD). The median age [IQR] at ALF was 12.9 [8.9-20.2] years, range: 0.6-71.0 years. Serum ceruloplasmin (Cp) < 0.20 g/L and 24 h urinary copper excretion > 1.6 μmol/L had both a sensitivity (Se) and specificity (Sp) for the diagnosis of WD of 100% and 72.7%, respectively. A ROC analysis of REC determined that the best cut-off point was 14.4% (AUC 1, p < 0.01). All the WD patients had REC values > 14.4%, yielding a sensitivity and specificity of 100. Relative exchangeable copper has 100% sensitivity and specificity for diagnosing Wilson disease in acute liver failure. Relative exchangeable copper has excellent performance in diagnosing Wilson disease in acute liver failure.

Indexed as

CopperHepatolenticular DegenerationLiver Failure, AcuteAdolescentAdultAgedBiomarkersCeruloplasminChildChild, PreschoolFemaleHumansInfantMaleMiddle AgedROC CurveBiomarkersCeruloplasminCopperacute liver failureceruloplasminexchangeable copperrelative exchangeable copperurinary copperWilson disease

Identifiers

PMID40097333
PMCPMC11913634

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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.