Evidence map›Paper›PMID 33172959›Full record

SynthesisESMO open2020

PD-1 protein and gene expression as prognostic factors in early breast cancer.

Alexios Matikas, Ioannis Zerdes, John Lövrot, Emmanouil Sifakis, Francois Richard, Christos Sotiriou, Georgios Rassidakis, Jonas Bergh, Antonis Valachis, Theodoros Foukakis

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in ESMO open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
1.1field-weighted citation impact, top 20% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
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  5. ESR1 overexpression is a biomarker of relapse and worse prognosis in stage I endometrioid endometrial carcinoma.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2025
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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 5 institutions in 2 countries.

Alexios MatikasBreast Center, Theme Cancer, Karolinska University Hospital, Stockholm, Sweden; Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.
Ioannis ZerdesDepartment of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden. Electronic address: ioannis.zerdes@ki.se.
John LövrotDepartment of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.
Emmanouil SifakisDepartment of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.
Francois RichardDepartment of Oncology, KU Leuven, Leuven, Flanders, Belgium.
Christos SotiriouDepartment of Medical Oncology, Institute Jules Bordet, Brussels, Belgium.
Georgios RassidakisDepartment of Pathology and Cytology, Karolinska University Hospital, Stockholm, Sweden.
Jonas BerghBreast Center, Theme Cancer, Karolinska University Hospital, Stockholm, Sweden; Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.
Antonis ValachisDepartment of Oncology, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Theodoros FoukakisBreast Center, Theme Cancer, Karolinska University Hospital, Stockholm, Sweden; Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden.
Karolinska University Hospital · SEKarolinska Institutet · SEInstitut Jules Bordet · BEKU Leuven · BEÖrebro University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is a paucity of data on the prognostic value of programmed cell death protein 1 (PD-1) protein and gene expression in early breast cancer (BC) and the present study's aim was to comprehensively investigate it.

methodsThe study consisted of three parts: a correlative analysis of PD-1 protein and gene expression from an original patient cohort of 564 patients with early BC; a systematic review and trial-level meta-analysis on the association between PD-1 protein expression and disease-free survival/overall survival (OS) in early BC; and a pooled gene expression analysis from publicly available transcriptomic datasets regarding

resultsIn the study cohort, PD-1 protein, but not gene expression, was associated with improved OS (HR

conclusionsPD-1 protein and gene expression seem to be promising prognostic factors in early BC. Standardisation of detection and assessment methods is of utmost importance.

Indexed as

Breast NeoplasmsProgrammed Cell Death 1 ReceptorDisease-Free SurvivalFemaleHumansPrognosisTranscriptomeProgrammed Cell Death 1 Receptorbreast cancergene expressionPD-1prognosistriple-negative

Identifiers

PMID33172959
PMCPMC7656908
OpenAlexW3103532516

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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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.