Evidence map›Paper›PMID 34476250›Full record

ArticleERJ open research2021

A systematic review of the diagnostic accuracy of volatile organic compounds in airway diseases and their relation to markers of type-2 inflammation.

Wadah Ibrahim, Sushiladevi Natarajan, Michael Wilde, Rebecca Cordell, Paul S Monks, Neil Greening, Christopher E Brightling, Rachael Evans, Salman Siddiqui

Open access · goldAbstract read
In one paragraph

Article in ERJ open research, 2021. 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
0.9field-weighted citation impact, top 29% 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, 16 citations in OpenAlex.

  1. Trial
  2. Article
  3. Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. Discovery and Validation of a Volatile Signature of Eosinophilic Airway Inflammation in Asthma.American journal of respiratory and critical care medicine · 2024
    Article
  9. Article
  10. Article
  11. Review
  12. Observational
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 1 institution in 1 country.

Wadah IbrahimLeicester NIHR Biomedical Research Centre (Respiratory Theme), Glenfield Hospital, Leicester, UK.
Sushiladevi NatarajanLeicester NIHR Biomedical Research Centre (Respiratory Theme), Glenfield Hospital, Leicester, UK.
Michael WildeDept of Chemistry, University of Leicester, Leicester, UK.ORCID https://orcid.org/0000-0003-0726-890X
Rebecca CordellDept of Chemistry, University of Leicester, Leicester, UK.
Paul S MonksDept of Chemistry, University of Leicester, Leicester, UK.ORCID https://orcid.org/0000-0001-9984-4390
Neil GreeningLeicester NIHR Biomedical Research Centre (Respiratory Theme), Glenfield Hospital, Leicester, UK.
Christopher E BrightlingLeicester NIHR Biomedical Research Centre (Respiratory Theme), Glenfield Hospital, Leicester, UK.
Rachael EvansLeicester NIHR Biomedical Research Centre (Respiratory Theme), Glenfield Hospital, Leicester, UK.ORCID https://orcid.org/0000-0002-1667-868X
Salman SiddiquiLeicester NIHR Biomedical Research Centre (Respiratory Theme), Glenfield Hospital, Leicester, UK.
University of Leicester · GB

Funding

Medical Research Council MR/N005880/1
6 · The paper itself

Abstract

backgroundAsthma and COPD continue to cause considerable diagnostic and treatment stratification challenges. Volatile organic compounds (VOCs) have been proposed as feasible diagnostic and monitoring biomarkers in airway diseases.

aimsTo 1) conduct a systematic review evaluating the diagnostic accuracy of VOCs in diagnosing airway diseases; 2) understand the relationship between reported VOCs and biomarkers of type-2 inflammation; 3) assess the standardisation of reporting according to STARD and TRIPOD criteria; 4) review current methods of breath sampling and analysis.

methodsA PRISMA-oriented systematic search was conducted (January 1997 to December 2020). Search terms included: "asthma", "volatile organic compound(s)", "VOC" and "COPD". Two independent reviewers examined the extracted titles against review objectives.

results44 full-text papers were included; 40/44 studies were cross-sectional and four studies were interventional in design; 17/44 studies used sensor-array technologies (

conclusionsBreath VOCs show promise as diagnostic biomarkers of airway diseases and for type-2 inflammation profiling. However, future studies should focus on transparent reporting of diagnostic accuracy and multivariate models and continue to focus on chemical identification of volatile metabolites.

Identifiers

PMID34476250
PMCPMC8405872
OpenAlexW3154490513

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.