Evidence map›Paper›PMID 33993342›Full record

SynthesisPediatric nephrology (Berlin, Germany)2021

A systematic review of urine biomarkers in children with IgA vasculitis nephritis.

Chloe E C Williams, Aileen Toner, Rachael D Wright, Louise Oni

Open access · hybridAbstract readSystematic Review
In one paragraph

Synthesis in Pediatric nephrology (Berlin, Germany), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

21 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
  2. Biomarkers in Primary Systemic Vasculitides: Narrative Review.International journal of molecular sciences · 2026
    Review
  3. Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Construction and diagnostic efficacy assessment of the urinary exosomal miRNA-mRNA network in children with IgA vasculitis nephritis.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
  9. Article
  10. Modern biomarkers in IgA vasculitis with nephritis in children.Central-European journal of immunology · 2025
    Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Review
  19. Review
  20. IgA Vasculitis: Etiology, Treatment, Biomarkers and Epigenetic Changes.International journal of molecular sciences · 2021
    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.

Chloe E C WilliamsSchool of Medicine, University of Liverpool, Liverpool, UK.
Aileen TonerSchool of Medicine, University of Liverpool, Liverpool, UK.
Rachael D WrightDepartment of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK.
Louise OniDepartment of Women's and Children's Health, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK. louise.oni@liverpool.ac.uk.ORCID 0000-0002-1532-2390
University of Liverpool · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNephritis is a recognised complication of IgA vasculitis (IgAV, Henoch-Schönlein purpura) contributing to 1-2% of all chronic kidney disease (CKD) stage 5. Improved understanding may reduce irreversible damage in IgAV nephritis (IgAV-N).

objectiveThe aim of this study was to perform a comprehensive systematic literature review to identify promising clinical and pre-clinical urine biomarkers in children with IgAV-N that could predict the presence of nephritis and/or determine its severity.

methodsA systematic literature review was performed using four search engines and a predefined search term strategy. Promising biomarkers were divided in terms of clinical or pre-clinical and ability to predict the presence of nephritis or determine its severity. Results were described using statistical significance (p < 0.05) and area under the curve (AUC) values.

resultsOne hundred twenty-one studies were identified; 13 were eligible. A total of 2446 paediatric patients were included: healthy controls (n = 761), children with IgAV-N (n = 1236) and children with IgAV without nephritis (IgAV-noN, n = 449). Fifty-one percent were male, median age 7.9 years. The clinical markers, 24-h protein quantity and urine protein:creatinine ratio, were deemed acceptable for assessing severity of nephritis (AUC < 0.8). Urinary albumin concentration (Malb) performed well (AUC 0.81-0.98). The most promising pre-clinical urinary biomarkers in predicting presence of nephritis were as follows: kidney injury molecule-1 (KIM-1) (AUC 0.93), monocyte chemotactic protein-1 (MCP-1) (AUC 0.83), N-acetyl-β-glucosaminidase (NAG) (0.76-0.96), and angiotensinogen (AGT) (AUC not available). Urinary KIM-1, MCP-1, and NAG appeared to correlate with disease severity.

conclusionsLongitudinal studies are needed to assess whether pre-clinical biomarkers enhance standard of care in IgAV-N.

Indexed as

IgA VasculitisKidney Failure, ChronicNephritisArea Under CurveBiomarkersChildHumansImmunoglobulin AMaleBiomarkersImmunoglobulin ABiomarkerChildrenHenoch-Schönlein purpuraIgA vasculitisNephritisUrine

Identifiers

PMID33993342
PMCPMC8445860
OpenAlexW3162415721

What OpenQuestion holds

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LicenceCC BY
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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.