Evidence map›Paper›PMID 25047087›Full record

ArticleBMC cancer2014

MicroRNA profile in very young women with breast cancer.

Maria Peña-Chilet, Maria T Martínez, Jose A Pérez-Fidalgo, Lorena Peiró-Chova, Sara S Oltra, Eduardo Tormo, Elisa Alonso-Yuste, Beatriz Martinez-Delgado, Pilar Eroles, Joan Climent and 5 more

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In one paragraph

Article in BMC cancer, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

42 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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  17. Expression of miRNA-25 in young and old lung adenocarcinoma.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2021
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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

15 authors.

Maria Peña-Chilet
Maria T Martínez
Jose A Pérez-Fidalgo
Lorena Peiró-Chova
Sara S Oltra
Eduardo Tormo
Elisa Alonso-Yuste
Beatriz Martinez-Delgado
Pilar Eroles
Joan Climent
Octavio Burgués
Jaime Ferrer-Lozano
Ana Bosch
Ana Lluch
Gloria RibasMedical Oncology and Hematology Unit, INCLIVA Biomedical Research Institute, Av, Blasco Ibañez, 17, Valencia 46010, Spain. gribasdespuig@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBreast cancer is rarely diagnosed in very young women (35 years old or younger), and it often presents with distinct clinical-pathological features related to a more aggressive phenotype and worse prognosis when diagnosed at this early age. A pending question is whether breast cancer in very young women arises from the deregulation of different underlying mechanisms, something that will make this disease an entity differentiated from breast cancer diagnosed in older patients.

methodsWe performed a comprehensive study of miRNA expression using miRNA Affymetrix2.0 array on paraffin-embedded tumour tissue of 42 breast cancer patients 35 years old or younger, 17 patients between 45 and 65 years old and 29 older than 65 years. Data were statistically analyzed by t-test and a hierarchical clustering via average linkage method was conducted. Results were validated by qRT-PCR. Putative targeted pathways were obtained using DIANA miRPath online software.

resultsThe results show a differential and unique miRNA expression profile of 121 miRNAs (p-value <0.05), 96 of those with a FDR-value <0.05. Hierarchical clustering grouped the samples according to their age, but not by subtype nor by tumour characteristics. We were able to validate by qRT-PCR differences in the expression of 6 miRNAs: miR-1228*, miR-3196, miR-1275, miR-92b, miR-139 and miR-1207. Moreover, all of the miRNAs maintained the expression trend. The validated miRNAs pointed out pathways related to cell motility, invasion and proliferation.

conclusionsThe study suggests that breast cancer in very young women appears as a distinct molecular signature. To our knowledge, this is the first time that a validated microRNA profile, distinctive to breast cancer in very young women, has been presented. The miRNA signature may be relevant to open an important field of research in order to elucidate the underlying mechanism in this particular disease, which in a more clinical setting, could potentially help to identify therapeutic targets in this particular set of patients.

Indexed as

AdultAgedAge FactorsBreast NeoplasmsCluster AnalysisFemaleGene Expression ProfilingGene Expression Regulation, NeoplasticHumansMicroRNAsMiddle AgedOligonucleotide Array Sequence AnalysisYoung AdultMicroRNAs

Identifiers

PMID25047087
PMCPMC4223555

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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.