Evidence map›Paper›PMID 26540293›Full record

ArticlePloS one2015

Analysis of PIK3CA Mutations and Activation Pathways in Triple Negative Breast Cancer.

Paolo Cossu-Rocca, Sandra Orrù, Maria Rosaria Muroni, Francesca Sanges, Giovanni Sotgiu, Sara Ena, Giovanna Pira, Luciano Murgia, Alessandra Manca, Maria Gabriela Uras and 3 more

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05660083 (Phase II Trial of Alpelisib With iNOS Inhibitor and Nab-paclitaxel in Patients With HER2 Negative Metastatic or Locally Advanced Metaplastic Breast Cancer), which is not on this map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
3.6field-weighted citation impact, top 6% 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.

NCT05660083 phase2recruitingnot on this mapstarted 2023, after this paper: background citation

Phase II Trial of Alpelisib With iNOS Inhibitor and Nab-paclitaxel in Patients With HER2 Negative Metastatic or Locally Advanced Metaplastic Breast Cancer (MpBC)

TypeinterventionalSponsorThe Methodist Hospital Research InstituteRan2023 to 2028Enrolled36ConditionsHER2-negative Breast Cancer, Metastatic Breast Cancer, Metaplastic Breast Carcinoma, TNBC - Triple-Negative Breast CancerArmsL-NMMA
3 · Its place in the literature

Who cites it

56 citing papers in PubMed, 100 citations in OpenAlex.

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  6. The cross-talk between GSK-3β, RKIP, and PTEN as potential targets for therapeutic implications in cancer: a comprehensive insight.Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · 2026
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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

13 authors at 4 institutions in 1 country.

Paolo Cossu-RoccaDepartment of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy.
Sandra OrrùDepartment of Pathology, "A. Businco" Oncologic Hospital, ASL Cagliari, Cagliari, Italy.
Maria Rosaria MuroniDepartment of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy.
Francesca SangesDepartment of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy.
Giovanni SotgiuEpidemiology and Medical Statistics Unit, Department of Biomedical Sciences, University of Sassari, Research, Medical Education and Professional Development Unit, AOU Sassari, Sassari, Italy.
Sara EnaDepartment of Biomedical Sciences, University of Sassari, Sassari, Italy.
Giovanna PiraDepartment of Biomedical Sciences, University of Sassari, Sassari, Italy.
Luciano MurgiaDepartment of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy.
Alessandra MancaDepartment of Pathology, AOU Sassari, Sassari, Italy.
Maria Gabriela UrasDepartment of Pathology, AOU Sassari, Sassari, Italy.
Maria Giuseppina SarobbaDepartment of Medical Oncology, ASL Nuoro, Nuoro, Italy.
Silvana UrruBiomedicine Sector, Center for Advanced Studies, Research and Development in Sardinia Technology Park Polaris, Cagliari, Italy.
Maria Rosaria De MiglioDepartment of Clinical and Experimental Medicine, University of Sassari, Sassari, Italy.
University of Sassari · ITAzienda Ospedaliero Universitaria di Sassari · ITAssociazione Istituzione Libera Università Nuorese · ITCenter for Advanced Studies Research and Development in Sardinia · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTriple Negative Breast Cancer (TNBC) accounts for 12-24% of all breast carcinomas, and shows worse prognosis compared to other breast cancer subtypes. Molecular studies demonstrated that TNBCs are a heterogeneous group of tumors with different clinical and pathologic features, prognosis, genetic-molecular alterations and treatment responsivity. The PI3K/AKT is a major pathway involved in the regulation of cell survival and proliferation, and is the most frequently altered pathway in breast cancer, apparently with different biologic impact on specific cancer subtypes. The most common genetic abnormality is represented by PIK3CA gene activating mutations, with an overall frequency of 20-40%. The aims of our study were to investigate PIK3CA gene mutations on a large series of TNBC, to perform a wider analysis on genetic alterations involving PI3K/AKT and BRAF/RAS/MAPK pathways and to correlate the results with clinical-pathologic data. MATERIALS AND

methodsPIK3CA mutation analysis was performed by using cobas® PIK3CA Mutation Test. EGFR, AKT1, BRAF, and KRAS genes were analyzed by sequencing. Immunohistochemistry was carried out to identify PTEN loss and to investigate for PI3K/AKT pathways components.

resultsPIK3CA mutations were detected in 23.7% of TNBC, whereas no mutations were identified in EGFR, AKT1, BRAF, and KRAS genes. Moreover, we observed PTEN loss in 11.3% of tumors. Deregulation of PI3K/AKT pathways was revealed by consistent activation of pAKT and p-p44/42 MAPK in all PIK3CA mutated TNBC.

conclusionsOur data shows that PIK3CA mutations and PI3K/AKT pathway activation are common events in TNBC. A deeper investigation on specific TNBC genomic abnormalities might be helpful in order to select patients who would benefit from current targeted therapy strategies.

Indexed as

AdultAgedClass I Phosphatidylinositol 3-KinasesErbB ReceptorsFemaleGenes, rasHumansMiddle AgedMutationPhosphatidylinositol 3-KinasesProto-Oncogene Proteins B-rafProto-Oncogene Proteins c-aktPTEN Phosphohydrolaseras ProteinsSignal TransductionTriple Negative Breast NeoplasmsClass I Phosphatidylinositol 3-KinasesErbB ReceptorsPhosphatidylinositol 3-KinasesPIK3CA protein, humanProto-Oncogene Proteins B-rafProto-Oncogene Proteins c-aktPTEN Phosphohydrolaseras Proteins

Identifiers

PMID26540293
PMCPMC4634768
OpenAlexW2158967203

What Socratic holds

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LicenceCC BY
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Registered trials

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 Socratic graph.