Evidence map›Paper›PMID 21284444›Full record

Trial reportArchives of pathology & laboratory medicine2011

Observer variability in the interpretation of HER2/neu immunohistochemical expression with unaided and computer-aided digital microscopy.

Marios A Gavrielides, Brandon D Gallas, Petra Lenz, Aldo Badano, Stephen M Hewitt

Open access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Archives of pathology & laboratory medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 3 pooled it
10.7field-weighted citation impact, top 2% 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

68 citing papers in PubMed, 3 syntheses or guidelines pooled it, 122 citations in OpenAlex.

  1. Pooled it
  2. Guideline
  3. Pooled it
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  5. Review
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  12. Color Standardization and Stain Intensity Calibration for Whole Slide Image-Based Immunohistochemistry Assessment.Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada · 2024
    Article
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  19. Zonated quantification of immunohistochemistry in normal and steatotic livers.Virchows Archiv : an international journal of pathology · 2023
    Article
  20. Article

8 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

5 authors at 1 institution in 1 country.

Marios A GavrielidesDivision of Imaging and Applied Mathematics, Office of Science and Engineering Laboratories, Center for Devices and Radiological Health, US Food and Drug Administration, Silver Spring, Maryland 20993, USA. marios.gavrielides@fda.hhs.gov
Brandon D Gallas
Petra Lenz
Aldo Badano
Stephen M Hewitt
United States Food and Drug Administration · US

Funding

Tissue Array Research ProgramZICBC010923 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI HEWITT, STEPHEN · 2009 to 2014
$4.7M
Intramural NIH HHS ZIC BC010923
6 · The paper itself

Abstract

contextObserver variability in digital microscopy and the effect of computer-aided digital microscopy are underexamined areas in need of further research, considering the increasing use and future role of digital imaging in pathology. A reduction in observer variability using computer aids could enhance the statistical power of studies designed to determine the utility of new biomarkers and accelerate their incorporation in clinical practice.

objectivesTo quantify interobserver and intraobserver variability in immunohistochemical analysis of HER2/neu with digital microscopy and computer-aided digital microscopy, and to test the hypothesis that observer agreement in the quantitative assessment of HER2/neu immunohistochemical expression is increased with the use of computer-aided microscopy.

designA set of 335 digital microscopy images extracted from 64 breast cancer tissue slides stained with a HER2 antibody, were read by 14 observers in 2 reading modes: the unaided mode and the computer-aided mode. In the unaided mode, HER2 images were displayed on a calibrated color monitor with no other information, whereas in the computer-aided mode, observers were shown a HER2 image along with a corresponding feature plot showing computer-extracted values of membrane staining intensity and membrane completeness for the particular image under examination and, at the same time, mean feature values of the different HER2 categories. In both modes, observers were asked to provide a continuous score of HER2 expression.

resultsAgreement analysis performed on the output of the study showed significant improvement in both interobserver and intraobserver agreement when the computer-aided reading mode was used to evaluate preselected image fields.

conclusionThe role of computer-aided digital microscopy in reducing observer variability in immunohistochemistry is promising.

Indexed as

Breast NeoplasmsErb-b2 Receptor Tyrosine KinasesFemaleHumansImage Processing, Computer-AssistedImmunohistochemistryMicroscopyObserver VariationErb-b2 Receptor Tyrosine Kinases

Identifiers

PMID21284444
PMCPMC7604903
OpenAlexW149802270

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.