Evidence map›Paper›PMID 26727705›Full record

ArticleFunctional neurology

Measurement of urinary copper excretion after 48-h d-penicillamine cessation as a compliance assessment in Wilson's disease.

Karolina Dzieżyc, Tomasz Litwin, Grzegorz Chabik, Anna Członkowska

Abstract read
In one paragraph

Article in Functional neurology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

12 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Current Management of Neurological Wilson's Disease.Tremor and other hyperkinetic movements (New York, N.Y.) · 2025
    Review
  6. Article
  7. Article
  8. Review
  9. Designing Clinical Trials in Wilson's Disease.Hepatology (Baltimore, Md.) · 2021
    Article
  10. Review
  11. Article
  12. Review
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

4 authors at 1 institution in 1 country.

Karolina Dzieżyc
Tomasz Litwin
Grzegorz Chabik
Anna Członkowska
Institute of Psychiatry and Neurology · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Treatment of Wilson's disease (WD) with anti-copper agents is effective in most compliant patients. During long-term treatment with chelating agents, a two-day interruption of the treatment should result in normal urinary copper concentrations (<50 μg/dl). The aim of this study was to establish the usefulness of this method as a compliance assessment in these patients. We examined consecutive patients treated with d-penicillamine (DPA) undergoing routine follow-up studies at our center. We performed 24-h urinary copper excretion analysis 48 h after interruption of chelating therapy. Thirty-two patients were enrolled. After DPA cessation, normalization of copper excretion was observed in 91% of reportedly compliant patients. The specificity and sensitivity values of this test were 87% and 77%, respectively. Measurement of 24-h urinary copper excretion after a 48-h interruption of DPA therapy in patients with WD is a reliable method for confirming patients' compliance.

Indexed as

AdultAgedChelating AgentsCopperFemaleFollow-Up StudiesHepatolenticular DegenerationHumansMaleMiddle AgedPenicillamineTime FactorsTreatment OutcomeYoung AdultChelating AgentsCopperPenicillamine

Identifiers

PMID26727705
PMCPMC4758779
OpenAlexW2414480447

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.