Evidence map›Paper›PMID 25182704›Full record

ArticleMedical oncology (Northwood, London, England)2014

Validation of analytical breast cancer microarray analysis in medical laboratory.

Amal Said Darweesh, Manal Louis Louka, Maha Hana, Shaymaa Rashad, Mohamed El-Shinawi, Ahmed Sharaf-Eldin, Samar Kamal Kassim

Abstract readValidation Study
PubMed Publisher
In one paragraph

Article in Medical oncology (Northwood, London, England), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–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

2 citing papers in PubMed.

  1. TheFrontiers in molecular neuroscience · 2021
    Article
  2. Grb7 gene amplification and protein expression by FISH and IHC in ovarian cancer.International journal of clinical and experimental pathology · 2015
    Article
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

7 authors.

Amal Said DarweeshMedical Biochemistry and Molecular Biology Department, Faculty of Medicine, Ain Shams University, Cairo, 11381, Egypt.
Manal Louis Louka
Maha Hana
Shaymaa Rashad
Mohamed El-Shinawi
Ahmed Sharaf-Eldin
Samar Kamal Kassim

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A previously reported microarray data analysis by RISS algorithm on breast cancer showed over-expression of the growth factor receptor (Grb7) and it also highlighted Tweety (TTYH1) gene to be under expressed in breast cancer for the first time. Our aim was to validate the results obtained from the microarray analysis with respect to these genes. Also, the relationship between their expression and the different prognostic indicators was addressed. RNA was extracted from the breast tissue of 30 patients with primary malignant breast cancer. Control samples from the same patients were harvested at a distance of ≥5 cm from the tumour. Semi-quantitative RT-PCR analysis was done on all samples. There was a significant difference between the malignant and control tissues as regards Grb7 expression. It was significantly related to the presence of lymph node metastasis, stage and histological grade of the malignant tumours. There was a significant inverse relation between expression of Grb7 and expression of both oestrogen and progesterone receptors. Grb7 was found to be significantly related to the biological classification of breast cancer. TTYH1 was not expressed in either the malignant or the control samples. The RISS by our group algorithm developed was laboratory validated for Grb7, but not for TTYH1. The newly developed software tool needs to be improved.

Indexed as

AdultAgedBreast NeoplasmsEgyptFemaleGRB7 Adaptor ProteinHumansMembrane ProteinsMicroarray AnalysisMiddle AgedPrognosisReproducibility of ResultsReverse Transcriptase Polymerase Chain ReactionRisk FactorsGRB7 Adaptor ProteinGRB7 protein, humanMembrane ProteinsTTYH1 protein, human

Identifiers

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Registered trials

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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.