Evidence map›Paper›PMID 32445177›Full record

ArticleBreast cancer research and treatment2020

Elevated MMP9 expression in breast cancer is a predictor of shorter patient survival.

Chitra Joseph, Mansour Alsaleem, Nnamdi Orah, Pavan L Narasimha, Islam M Miligy, Sasagu Kurozumi, Ian O Ellis, Nigel P Mongan, Andrew R Green, Emad A Rakha

Open access · hybridAbstract read
In one paragraph

Article in Breast cancer research and treatment, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed, 1 pooled it
11.8field-weighted citation impact, top 1% 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

75 citing papers in PubMed, 1 synthesis or guideline pooled it, 128 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. MMP-9 and non-invasive markers in evaluating MASLD and atherosclerosis.Journal, genetic engineering & biotechnology · 2026
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  19. Plasma Matrix Metalloproteinase-9 Predicts Intraoperative Experience and Extent of Resection in Vestibular Schwannoma Surgery.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2025
    Article
  20. Article

15 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

10 authors at 2 institutions in 4 countries.

Chitra JosephNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK.ORCID http://orcid.org/0000-0003-2631-9266
Mansour AlsaleemNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK.
Nnamdi OrahNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK.
Pavan L NarasimhaNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK.
Islam M MiligyNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK.
Sasagu KurozumiNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK.
Ian O EllisNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK.
Nigel P MonganDepartment of Pharmacology, Weill Cornell Medicine, New York, 10065, USA.
Andrew R GreenNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK.
Emad A RakhaNottingham Breast Cancer Research Centre, School of Medicine, University of Nottingham, Nottingham, UK. Emad.Rakha@nottingham.ac.uk.
University of Nottingham · GBNottingham University Hospitals NHS Trust · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeMMP9 is a matricellular protein associated with extracellular matrix (ECM) remodelling, that promotes tumour progression, and modulates the activity of cell adhesion molecules and cytokines. This study aims to assess the prognostic value of MMP9 and its association with cytoskeletal modulators in early-stage invasive breast cancer (BC).

methodsMMP9 expression was evaluated by immunohistochemistry using a well-characterised series of primary BC patients with long-term clinical follow-up. Association with clinicopathological factors, patient outcome and ECM remodelling BC-biomarkers were investigated. METABRIC dataset, BC-GenExMiner v4.0 and TCGA were used for the external validation of MMP9 expression. GSEA gene enrichment analyses were used to evaluate MMP9 associated pathways.

resultsMMP9 immunopositivity was observed in the stroma and cytoplasm of BC cells. Elevated MMP9 protein levels were associated with high tumour grade, high Nottingham Prognostic Index, and hormonal receptor negativity. Elevated MMP9 protein expression correlated significantly with cytokeratin 17 (Ck17), Epidermal Growth Factor Receptor (EGFR), proliferation (Ki67) biomarkers, cell surface adhesion receptor (CD44) and cell division control protein 42 (CDC42). Cytoplasmic MMP9 expression was an independent prognostic factor associated with shorter BC-specific survival. In the external validation cohorts, MMP9 expression was also associated with poor patients' outcome. Transcriptomic analysis confirmed a positive association between MMP9 and ECM remodelling biomarkers. GSEA analysis supports MMP9 association with ECM and cytoskeletal pathways.

conclusionThis study provides evidence for the prognostic value of MMP9 in BC. Further functional studies to decipher the role of MMP9 and its association with cytoskeletal modulators in BC progression are warranted.

Indexed as

Biomarkers, TumorBreastBreast NeoplasmsDisease ProgressionFemaleFollow-Up StudiesGene Expression ProfilingGene Expression Regulation, NeoplasticHumansImmunohistochemistryKaplan-Meier EstimateMatrix Metalloproteinase 9Middle AgedNeoplasm InvasivenessPrognosisProspective StudiesBiomarkers, TumorMatrix Metalloproteinase 9MMP9 protein, humanRNA, MessengerBreast cancerECM remodellingMMP9Prognosis

Identifiers

PMID32445177
PMCPMC7297818
OpenAlexW3027453227

What OpenQuestion holds

Textmetadata
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.