Evidence map›Paper›PMID 34951059›Full record

SynthesisJournal of clinical laboratory analysis2022

Biochemical testing for the diagnosis of Wilson's disease: A systematic review.

Hafiz Muhammad Salman, Mahwish Amin, Javaria Syed, Zouina Sarfraz, Azza Sarfraz, Muzna Sarfraz, Maria Jose Farfán Bajaña, Miguel Felix, Ivan Cherrez-Ojeda

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in Journal of clinical laboratory analysis, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 21% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Current Management of Neurological Wilson's Disease.Tremor and other hyperkinetic movements (New York, N.Y.) · 2025
    Review
  7. Review
  8. Review
  9. Monitoring of Copper in Wilson Disease.Diagnostics (Basel, Switzerland) · 2023
    Review
  10. Review
  11. 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

9 authors at 7 institutions in 2 countries.

Hafiz Muhammad SalmanServices Institute of Medical Sciences, Lahore, Pakistan.
Mahwish AminSir Ganga Ram Hospital, Lahore, Punjab, Pakistan.
Javaria SyedSargodha Medical College, Sargodha, Pakistan.
Zouina SarfrazFatima Jinnah Medical University, Lahore, Pakistan.ORCID https://orcid.org/0000-0002-5132-7455
Azza SarfrazThe Aga Khan University, Karachi, Pakistan.ORCID https://orcid.org/0000-0001-8206-5745
Muzna SarfrazKing Edward Medical University, Lahore, Pakistan.
Maria Jose Farfán BajañaUniversidad Espíritu Santo, Samborondón, Ecuador.
Miguel FelixUniversidad Espíritu Santo, Samborondón, Ecuador.
Ivan Cherrez-OjedaUniversidad Espíritu Santo, Samborondón, Ecuador.
Universidad de Especialidades Espíritu Santo · ECAga Khan University · PKFatima Jinnah Medical University · PKKing Edward Medical University · PKServices Institute of Medical Sciences · PKSir Ganga Ram Hospital · PKUniversity of Sargodha · PK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWilson's disease (WD) is a rare inherited disorder that leads to copper accumulation in the liver, brain, and other organs. WD is prevalent worldwide, with an occurrence of 1 per 30,000 live births. Currently, there is no gold standard diagnostic test for WD. The objective of this systematic review is to determine the diagnostic accuracy for WD of three biochemical tests, namely hepatic copper, 24-hour urinary copper, and ceruloplasmin using the Leipzig criteria.

methodsAdhering to PRISMA guidelines, databases including PubMed/MEDLINE, CINAHL Plus, Web of Science, and Cochrane were searched. Studies that comprised of confirmed or suspected WD along with normal populations were included with adult and pediatric group. The sensitivity, specificity, negative predictive value and positive predictive value were computed using RevMan 5.4.

resultsNine studies were included. The best practice evidence for 24-hour urinary copper test ranged from a cutoff value of 0.64-1.6 μmol/24 h (N = 268; sensitivity = 75.6%, specificity = 98.3%). Hepatic copper test was optimally cutoff based on the ROC curve analysis at 1.2 μmol/g yielding a power of 96.4% sensitivity and 95.4% specificity (N = 1,150); however, the tried and tested 4 μmol/g cutoff, with 99.4% sensitivity and 96.1% specificity, is more widely accepted. The ceruloplasmin test cutoff value was found to be ranging from 0.14 to 0.2 g/L (N = 4,281; sensitivity = 77.1%-99%, specificity = 55.9%-82.8%).

conclusionThis paper provides a large-scale analysis of current evidence pertaining to the biochemical diagnosis of WD employing the Leipzig criteria. The laboratory values are typically based on specific subgroups based on age, ethnicity, and clinical subgroups. The findings of this systematic review must be used with caution, given the over- or under-estimation of the index tests.

Indexed as

CeruloplasminCopperCorneaHepatolenticular DegenerationHumansLiverSensitivity and SpecificityCeruloplasminCopperceruloplasminhepatic copperhepatolenticular degenerationliver copperurinary copperWilson's disease

Identifiers

PMID34951059
PMCPMC8842170
OpenAlexW4200574929

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.