Evidence map›Paper›PMID 15701279›Full record

ArticleNeuro-oncology2005

Microarray analysis of pediatric ependymoma identifies a cluster of 112 candidate genes including four transcripts at 22q12.1-q13.3.

Blanca Suarez-Merino, Mike Hubank, Tamas Revesz, William Harkness, Richard Hayward, Dominic Thompson, John L Darling, David G T Thomas, Tracy J Warr

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In one paragraph

Article in Neuro-oncology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

27 citing papers in PubMed, 70 citations in OpenAlex.

  1. Review
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  13. Chromosomal anomalies and prognostic markers for intracranial and spinal ependymomas.Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia · 2012
    Review
  14. Article
  15. Article
  16. Molecular genetics of ependymoma.Chinese journal of cancer · 2011
    Review
  17. Review
  18. Article
  19. Article
  20. Ependymomas in adults.Current neurology and neuroscience reports · 2010
    Review
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

9 authors at 3 institutions in 1 country.

Blanca Suarez-MerinoDepartment of Molecular Neuroscience, Institute of Neurology, National Hospital for Neurology and Neurosurgery, University College London, London, UK.
Mike Hubank
Tamas Revesz
William Harkness
Richard Hayward
Dominic Thompson
John L Darling
David G T Thomas
Tracy J Warr
National Hospital for Neurology and Neurosurgery · GBUniversity of Wolverhampton · GBUniversity College London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ependymomas are glial cell-derived tumors characterized by varying degrees of chromosomal abnormalities and variability in clinical behavior. Cytogenetic analysis of pediatric ependymoma has failed to identify consistent patterns of abnormalities, with the exception of monosomy of 22 or structural abnormalities of 22q. In this study, a total of 19 pediatric ependymoma samples were used in a series of expression profiling, quantitative real-time PCR (Q-PCR), and loss of heterozygosity experiments to identify candidate genes involved in the development of this type of pediatric malignancy. Of the 12,627 genes analyzed, a subset of 112 genes emerged as being abnormally expressed when compared to three normal brain controls. Genes with increased expression included the oncogene WNT5A; the p53 homologue p63; and several cell cycle, cell adhesion, and proliferation genes. Underexpressed genes comprised the NF2 interacting gene SCHIP-1 and the adenomatous polyposis coli (APC)-associated gene EB1 among others. We validated the abnormal expression of six of these genes by Q-PCR. The subset of differentially expressed genes also included four underexpressed transcripts mapping to 22q12.313.3. By Q-PCR we show that one of these genes, 7 CBX7(22q13.1), was deleted in 55% of cases. Other genes mapping to cytogenetic hot spots included two overexpressed and three underexpressed genes mapping to 1q31-41 and 6q21-q24.3, respectively. These genes represent candidate genes involved in ependymoma tumorigenesis. To the authors' knowledge, this is the first time microarray analysis and Q-PCR have been linked to identify heterozygous/homozygous deletions.

Indexed as

Oligonucleotide Array Sequence AnalysisBrain NeoplasmsChildChild, PreschoolChromosomes, Human, Pair 22EpendymomaFemaleHumansInfantLoss of HeterozygosityMaleReverse Transcriptase Polymerase Chain Reaction

Identifiers

PMID15701279
PMCPMC1871622
OpenAlexW2105414327

What OpenQuestion holds

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Read underepoch 390

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.