Evidence map›Paper›PMID 25679978›Full record

ArticlePloS one2015

Development and validation of an internationally-standardized, high-resolution capillary gel-based electrophoresis PCR-ribotyping protocol for Clostridium difficile.

Warren N Fawley, C W Knetsch, Duncan R MacCannell, Celine Harmanus, Tim Du, Michael R Mulvey, Ashley Paulick, Lydia Anderson, E J Kuijper, Mark H Wilcox

Open access · goldAbstract readValidation Study
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed
13.8field-weighted citation impact, top 1% 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

103 citing papers in PubMed, 225 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Prevalence ofCanadian journal of veterinary research = Revue canadienne de recherche veterinaire · 2026
    Article
  4. Article
  5. Clostridioides difficile pathogenesis and control.Nature reviews. Microbiology · 2026
    Review
  6. Article
  7. Article
  8. EmergingEmerging microbes & infections · 2025
    Article
  9. Article
  10. Isolation ofAnimals : an open access journal from MDPI · 2025
    Article
  11. Article
  12. Article
  13. Newly emerging metronidazole-resistantEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025
    Article
  14. The Role ofMicroorganisms · 2025
    Review
  15. Article
  16. Article
  17. Article
  18. Dominance of toxigenicFrontiers in microbiology · 2025
    Article
  19. Microbial genomics · 2025
    Article
  20. Future microbiology · 2024
    Observational

43 more citing papers are in PubMed but not listed here.

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 at 4 institutions in 4 countries.

Warren N FawleyDepartment of Microbiology, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom.
C W KnetschDepartment of Medical Microbiology, Centre of Infectious Diseases, Leiden University Medical Centre, Leiden, Netherlands.
Duncan R MacCannellCenters for Disease Control and Prevention (CDC), Atlanta, United States of America.
Celine HarmanusDepartment of Medical Microbiology, Centre of Infectious Diseases, Leiden University Medical Centre, Leiden, Netherlands.
Tim DuPublic Health Agency of Canada (PHAC), Winnipeg, Canada.
Michael R MulveyPublic Health Agency of Canada (PHAC), Winnipeg, Canada.
Ashley PaulickCenters for Disease Control and Prevention (CDC), Atlanta, United States of America.
Lydia AndersonCenters for Disease Control and Prevention (CDC), Atlanta, United States of America.
E J KuijperDepartment of Medical Microbiology, Centre of Infectious Diseases, Leiden University Medical Centre, Leiden, Netherlands.
Mark H WilcoxDepartment of Microbiology, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom; Leeds Institute of Molecular Medicine, University of Leeds, Leeds, United Kingdom.
Centers for Disease Control and Prevention · USLeiden University Medical Center · NLLeeds Teaching Hospitals NHS Trust · GBPublic Health Agency of Canada · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

PCR-ribotyping has been adopted in many laboratories as the method of choice for C. difficile typing and surveillance. However, issues with the conventional agarose gel-based technique, including inter-laboratory variation and interpretation of banding patterns have impeded progress. The method has recently been adapted to incorporate high-resolution capillary gel-based electrophoresis (CE-ribotyping), so improving discrimination, accuracy and reproducibility. However, reports to date have all represented single-centre studies and inter-laboratory variability has not been formally measured or assessed. Here, we achieved in a multi-centre setting a high level of reproducibility, accuracy and portability associated with a consensus CE-ribotyping protocol. Local databases were built at four participating laboratories using a distributed set of 70 known PCR-ribotypes. A panel of 50 isolates and 60 electronic profiles (blinded and randomized) were distributed to each testing centre for PCR-ribotype identification based on local databases generated using the standard set of 70 PCR-ribotypes, and the performance of the consensus protocol assessed. A maximum standard deviation of only ±3.8bp was recorded in individual fragment sizes, and PCR-ribotypes from 98.2% of anonymised strains were successfully discriminated across four ribotyping centres spanning Europe and North America (98.8% after analysing discrepancies). Consensus CE-ribotyping increases comparability of typing data between centres and thereby facilitates the rapid and accurate transfer of standardized typing data to support future national and international C. difficile surveillance programs.

Indexed as

Clostridioides difficileDNA, IntergenicElectrophoresis, CapillaryHumansPolymerase Chain ReactionReproducibility of ResultsRibotypingRNA, RibosomalDNA, IntergenicRNA, Ribosomal

Identifiers

PMID25679978
PMCPMC4332677
OpenAlexW2087637929

What OpenQuestion holds

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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.