Evidence map›Paper›PMID 22322993›Full record

ArticleActa neuropathologica2012

A prognostic gene expression signature in infratentorial ependymoma.

Khalida Wani, Terri S Armstrong, Elizabeth Vera-Bolanos, Aditya Raghunathan, David Ellison, Richard Gilbertson, Brian Vaillant, Stewart Goldman, Roger J Packer, Maryam Fouladi and 11 more

Open access · greenAbstract read
In one paragraph

Article in Acta neuropathologica, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed, 1 pooled it
7.9field-weighted citation impact, top 2% 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

80 citing papers in PubMed, 1 synthesis or guideline pooled it, 161 citations in OpenAlex.

  1. Genetic differences on intracranial versus spinal cord ependymal tumors: a meta-analysis of genetic researches.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2016
    Pooled it
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  10. Ependymoma: Evaluation and Management Updates.Current oncology reports · 2022
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20 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

21 authors at 11 institutions in 3 countries.

Khalida WaniDepartment of Pathology, The University of Texas MD Anderson Cancer Center, Houston, 77030, USA.
Terri S Armstrong
Elizabeth Vera-Bolanos
Aditya Raghunathan
David Ellison
Richard Gilbertson
Brian Vaillant
Stewart Goldman
Roger J Packer
Maryam Fouladi
Ian Pollack
Tom Mikkelsen
Michael Prados
Antonio Omuro
Riccardo Soffietti
Alicia Ledoux
Charmaine Wilson
Lihong Long
Mark R Gilbert
Ken Aldape
Collaborative Ependymoma Research Network
The University of Texas MD Anderson Cancer Center · USSt. Jude Children's Research Hospital · USChildren's Hospital of Pittsburgh · USChildren's National · USCincinnati Children's Hospital Medical Center · USHenry Ford Health System · USLurie Children's Hospital · USMemorial Sloan Kettering Cancer Center · USMethodist Hospital · USUniversity of California, San Francisco · USUniversity of Turin · IT

Funding

Tropism Enhanced Oncolytic Adenovirus for the Treatment of Brain TumorsP50CA127001 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI Juan Fueyo · 2008 to 2026
$41.2M
The DNA Damage Response and Tumorigenesis in the BrainP01CA096832 · NCI · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI BAKER, SUZANNE J. · 2003 to 2025
$38.0M
An Investigation of Radial Glia as the Source of Ependymoma Stem CellsR01CA129541 · NCI · UNIVERSITY OF CAMBRIDGE · PI GILBERTSON, RICHARD · 2007 to 2016
$3.0M
NCI NIH HHS 5 P50 CA127001-03NCI NIH HHS P01 CA096832NCI NIH HHS P50 CA127001NCI NIH HHS R01 CA129541
6 · The paper itself

Abstract

Patients with ependymoma exhibit a wide range of clinical outcomes that are currently unexplained by clinical or histological factors. Little is known regarding molecular biomarkers that could predict clinical behavior. Since recent data suggest that these tumors display biological characteristics according to their location (cerebral vs. infratentorial vs. spinal cord), rather than explore a broad spectrum of ependymoma, we focused on molecular alterations in ependymomas arising in the infratentorial compartment. Unsupervised clustering of available gene expression microarray data revealed two major subgroups of infratentorial ependymoma. Group 1 tumors over expressed genes that were associated with mesenchyme, Group 2 tumors showed no distinct gene ontologies. To assess the prognostic significance of these gene expression subgroups, real-time reverse transcriptase polymerase chain reaction assays were performed on genes defining the subgroups in a training set. This resulted in a 10-gene prognostic signature. Multivariate analysis showed that the 10-gene signature was an independent predictor of recurrence-free survival after adjusting for clinical factors. Evaluation of an external dataset describing subgroups of infratentorial ependymomas showed concordance of subgroup definition, including validation of the mesenchymal subclass. Importantly, the 10-gene signature was validated as a predictor of recurrence-free survival in this dataset. Taken together, the results indicate a link between clinical outcome and biologically identified subsets of infratentorial ependymoma and offer the potential for prognostic testing to estimate clinical aggressiveness in these tumors.

Indexed as

AdolescentAge FactorsAntigens, NeoplasmChildCluster AnalysisDatabases, GeneticDNA-Binding ProteinsDNA Topoisomerases, Type IIEpendymomaFemaleGene Expression ProfilingGene Expression Regulation, NeoplasticHumansInfratentorial NeoplasmsLongitudinal StudiesMaleAntigens, NeoplasmDNA-Binding ProteinsDNA Topoisomerases, Type II

Identifiers

PMID22322993
PMCPMC4013829
OpenAlexW2020277292

What OpenQuestion holds

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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.