Evidence map›Paper›PMID 30659433›Full record

ArticleBreast cancer research and treatment2019

Re-testing of predictive biomarkers on surgical breast cancer specimens is clinically relevant.

Stephanie Robertson, Caroline Rönnlund, Jana de Boniface, Johan Hartman

Open access · hybridAbstract read
In one paragraph

Article in Breast cancer research and treatment, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 10% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

Stephanie RobertsonDepartment of Oncology and Pathology, CCK, Karolinska Institutet, 17176, Stockholm, Sweden. stephanie.robertson@ki.se.ORCID http://orcid.org/0000-0002-9843-3028
Caroline RönnlundDepartment of Oncology and Pathology, CCK, Karolinska Institutet, 17176, Stockholm, Sweden.
Jana de BonifaceDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
Johan HartmanDepartment of Oncology and Pathology, CCK, Karolinska Institutet, 17176, Stockholm, Sweden.
Karolinska University Hospital · SEKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe accuracy of predictive and prognostic biomarker assessment in breast cancer is paramount since these guide therapy decisions. The aim was to investigate the concordance of biomarkers and immunohistochemical (IHC)-based surrogate tumor subtypes between core needle biopsies (CNB) and consecutive paired breast cancer surgical resections.

methodsThis retrospective study comprised two cohorts of patients with primary breast cancer diagnosed between 2016 and 2017: one treated with primary surgery (n = 526) and one with neoadjuvant chemotherapy (NAC) (n = 216). The agreement between preoperative CNB and paired tumor specimens regarding the assessment of biomarkers and surrogate tumor subtypes was evaluated in both cohorts.

resultsIn the primary surgery cohort, the concordance rates and kappa values for estrogen receptor (ER), progesterone receptor (PR) and Ki67 were 98.6% (κ = 0.917), 89.3% (κ = 0.725) and 78.8% (κ = 0.529), respectively. Importantly, human epidermal growth factor receptor 2 (HER2) IHC assessment showed only moderate agreement (κ = 0.462). HER2 status combining IHC and in situ hybridization was discordant in 3.6% of cases, potentially impacting on indications for HER2-targeted therapy. The concordance rate for IHC-based surrogate tumor subtypes was only 73.2-78.3%. Generally lower concordance rates for ER, PR and HER2 were observed in the NAC cohort. Here, HER2 status was discordant in 7.4%.

conclusionsThe agreement of HER2 and Ki67 between CNB and paired surgical specimen in primary breast cancer is insufficient. Limited agreement of surrogate tumor subtypes indicates a significant clinical value of biomarker re-testing on surgical specimens.

Indexed as

AdultAgedAged, 80 and overBiomarkers, TumorBiopsy, Large-Core NeedleBreast NeoplasmsDrug TherapyErb-b2 Receptor Tyrosine KinasesFemaleHumansKi-67 AntigenMastectomyMiddle AgedNeoadjuvant TherapyReceptors, EstrogenReceptors, ProgesteroneBiomarkers, TumorERBB2 protein, humanErb-b2 Receptor Tyrosine KinasesKi-67 AntigenReceptors, EstrogenReceptors, ProgesteroneBreast cancerCore biopsyHuman epidermal growth factor receptor 2ImmunohistochemistryKi67Predictive biomarker

Identifiers

PMID30659433
PMCPMC6439213
OpenAlexW2911137786

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.