Evidence map›Paper›PMID 23379971›Full record

ArticleDiagnostic pathology2013

Validation of a new classifier for the automated analysis of the human epidermal growth factor receptor 2 (HER2) gene amplification in breast cancer specimens.

Daniela Furrer, Simon Jacob, Chantal Caron, François Sanschagrin, Louise Provencher, Caroline Diorio

Open access · goldAbstract readComparative StudyValidation Study
In one paragraph

Article in Diagnostic pathology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.6field-weighted citation impact, top 16% 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

23 citing papers in PubMed, 44 citations in OpenAlex.

  1. Trial
  2. Article
  3. Image analysis for bright-field HER2 in situ hybridization: validation for clinical use.Virchows Archiv : an international journal of pathology · 2025
    Article
  4. Review
  5. Review
  6. Review
  7. Article
  8. Review
  9. Article
  10. Singular Nuclei Segmentation for AutomaticSensors (Basel, Switzerland) · 2022
    Article
  11. Computer-aided scoring ofJournal of pathology informatics · 2022
    Article
  12. Review
  13. Article
  14. Automatic quantification ofJournal of medical imaging (Bellingham, Wash.) · 2019
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. 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

6 authors at 2 institutions in 1 country.

Daniela FurrerUnité de Recherche en Santé des Populations, Centre de Recherche du CHU de Québec, Hôpital du St-Sacrement, 1050 Chemin Ste-Foy, Quebec City, QC G1S4L8, Canada. caroline.diorio@uresp.ulaval.ca
Simon Jacob
Chantal Caron
François Sanschagrin
Louise Provencher
Caroline Diorio
Université Laval · CAHôpital du Saint-Sacrement · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Amplification of the human epidermal growth factor receptor 2 (HER2) is a prognostic marker for poor clinical outcome and a predictive marker for therapeutic response to targeted therapies in breast cancer patients. With the introduction of anti-HER2 therapies, accurate assessment of HER2 status has become essential. Fluorescence in situ hybridization (FISH) is a widely used technique for the determination of HER2 status in breast cancer. However, the manual signal enumeration is time-consuming. Therefore, several companies like MetaSystem have developed automated image analysis software. Some of these signal enumeration software employ the so called "tile-sampling classifier", a programming algorithm through which the software quantifies fluorescent signals in images on the basis of square tiles of fixed dimensions. Considering that the size of tile does not always correspond to the size of a single tumor cell nucleus, some users argue that this analysis method might not completely reflect the biology of cells. For that reason, MetaSystems has developed a new classifier which is able to recognize nuclei within tissue sections in order to determine the HER2 amplification status on nuclei basis. We call this new programming algorithm "nuclei-sampling classifier". In this study, we evaluated the accuracy of the "nuclei-sampling classifier" in determining HER2 gene amplification by FISH in nuclei of breast cancer cells. To this aim, we randomly selected from our cohort 64 breast cancer specimens (32 nonamplified and 32 amplified) and we compared results obtained through manual scoring and through this new classifier. The new classifier automatically recognized individual nuclei. The automated analysis was followed by an optional human correction, during which the user interacted with the software in order to improve the selection of cell nuclei automatically selected. Overall concordance between manual scoring and automated nuclei-sampling analysis was 98.4% (100% for nonamplified cases and 96.9% for amplified cases). However, after human correction, concordance between the two methods was 100%. We conclude that the nuclei-based classifier is a new available tool for automated quantitative HER2 FISH signals analysis in nuclei in breast cancer specimen and it can be used for clinical purposes.

Indexed as

Gene AmplificationIn Situ Hybridization, FluorescenceSignal Processing, Computer-AssistedAlgorithmsAutomation, LaboratoryBiomarkers, TumorBreast NeoplasmsErb-b2 Receptor Tyrosine KinasesFemaleGene Expression Regulation, NeoplasticHumansPattern Recognition, AutomatedPhenotypePredictive Value of TestsPrognosisReproducibility of ResultsBiomarkers, TumorERBB2 protein, humanErb-b2 Receptor Tyrosine Kinases

Identifiers

PMID23379971
PMCPMC3584735
OpenAlexW2133441588

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.