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Her2 Amplification

2004· article· en· W1963612017 on OpenAlexaff
Christopher Wixom, Elizabeth Albers, Noel Weidner

Bibliographic record

VenueApplied immunohistochemistry & molecular morphology · 2004
Typearticle
Languageen
FieldMedicine
TopicHER2/EGFR in Cancer Research
Canadian institutionsCegep de Sept Iles
Fundersnot available
KeywordsCISHChromogenic in situ hybridizationImmunohistochemistryConcordanceFish <Actinopterygii>Fluorescence in situ hybridizationGene duplicationBiologyMolecular biologyIn situ hybridizationPathologyMedicineGeneBioinformaticsGeneticsGene expressionChromosomeFishery

Abstract

fetched live from OpenAlex

Detecting Her2 gene amplification has become routine in predicting therapeutic responsiveness in patients with breast carcinoma. Fluorescence in situ hybridization (FISH) is a common technique for detecting Her2 amplification, yet dark field fluorescence microscopy remains problematic for many pathologists. Thus, a technique such as chromogenic in situ hybridization (CISH), in which the more familiar light microscopy can be used, is appealing. Paraffin-embedded sections from 61 breast carcinomas were tested for Her2 amplification by immunohistochemistry (IHC) and CISH. FISH was used to confirm CISH results. Excellent correlation was found between IHC and CISH except in cases considered negative (1+ on the DAKO scale) by IHC. CISH detected low-level Her2 amplification in 4 of 9 of these cases. Amplification was subsequently confirmed by FISH in all but 1 case. When compared with FISH, CISH was more sensitive than IHC for detecting low levels of Her2 gene amplification. Moreover, excellent concordance was found between FISH and CISH, supporting the conclusion that the CISH assay for Her2 gene amplification provides an accurate, effective, and practical alternative to FISH.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.012
Threshold uncertainty score0.040

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0020.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0120.004

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.014
GPT teacher head0.319
Teacher spread0.305 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations26
Published2004
Admission routes1
Has abstractyes

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