Evidence map›Paper›PMID 33808271›Full record

ArticleCancers2021

PAM50 Intrinsic Subtype Profiles in Primary and Metastatic Breast Cancer Show a Significant Shift toward More Aggressive Subtypes with Prognostic Implications.

Charlotte Levin Tykjær Jørgensen, Anna-Maria Larsson, Carina Forsare, Kristina Aaltonen, Sara Jansson, Rachel Bradshaw, Pär-Ola Bendahl, Lisa Rydén

Open access · goldAbstract read
In one paragraph

Article in Cancers, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 9% 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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
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  9. Wiener klinische Wochenschrift · 2025
    Article
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  12. Prognostic relevance of CD163Cancer immunology, immunotherapy : CII · 2025
    Article
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  15. Observational
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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

8 authors at 2 institutions in 2 countries.

Charlotte Levin Tykjær JørgensenDivision of Oncology, Department of Clinical Sciences Lund, Lund University, SE-223 81 Lund, Sweden.
Anna-Maria LarssonDivision of Oncology, Department of Clinical Sciences Lund, Lund University, SE-223 81 Lund, Sweden.ORCID 0000-0002-3957-3266
Carina ForsareDivision of Oncology, Department of Clinical Sciences Lund, Lund University, SE-223 81 Lund, Sweden.
Kristina AaltonenDivision of Translational Cancer Research, Department of Laboratory Medicine, Lund University, SE-223 81 Lund, Sweden.
Sara JanssonDivision of Oncology, Department of Clinical Sciences Lund, Lund University, SE-223 81 Lund, Sweden.
Rachel BradshawNanoString Technologies, Seattle, WA 98109, USA.
Pär-Ola BendahlDivision of Oncology, Department of Clinical Sciences Lund, Lund University, SE-223 81 Lund, Sweden.
Lisa RydénDivision of Surgery and Division of Oncology, Department of Clinical Sciences, Lund University, SE-223 81 Lund, Sweden.ORCID 0000-0001-7515-3130
Lund University · SENanostring Technologies (United States) · US

Funding

Governmental Funding of Clinical Research within National Health Service (ALF) 2018-40304; 2020-40634Skåne University Hospital Funds 2017-92502; 2018-92502Swedish Research Council 2015-02516The Crafoord Foundation 20170702The Mrs Berta Kamprad Foundation 2017-39The Swedish Cancer Society 2016/563; 190388
6 · The paper itself

Abstract

backgroundPAM50 breast cancer intrinsic subtyping adds prognostic information in early breast cancer; however, the role in metastatic disease is unclear. We aimed to identify PAM50 subtypes in primary tumors (PTs) and metastases to outline subtype changes and their prognostic role.

methodsRNA was isolated from PTs, lymph node metastases (LNMs), and distant metastases (DMs) in metastatic breast cancer patients (

resultsThe PAM50 subtype changed in 25/59 of paired samples between PTs and LNMs (

conclusionStrong evidence of PAM50 subtype shifts toward unfavorable subtypes were seen between PTs and metastatic samples. For patients with a shift in subtype from luminal PT to non-luminal DM, a worse prognosis was noted.

Indexed as

metastatic breast cancerPAM50 breast cancer intrinsic subtypesubtype shifttumor heterogeneitytumor progression

Identifiers

PMID33808271
PMCPMC8037951
OpenAlexW3141477374

What OpenQuestion holds

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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.