Evidence map›Paper›PMID 21840481›Full record

ArticleCancer cell2011

Delineation of two clinically and molecularly distinct subgroups of posterior fossa ependymoma.

Hendrik Witt, Stephen C Mack, Marina Ryzhova, Sebastian Bender, Martin Sill, Ruth Isserlin, Axel Benner, Thomas Hielscher, Till Milde, Marc Remke and 26 more

Abstract readValidation Study
In one paragraph

Article in Cancer cell, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 268 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
268citing 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

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

  1. Pooled it
  2. Guideline
  3. 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
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  15. A brief history of ependymoma.Neuro-oncology · 2026
    Review
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208 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

36 authors.

Hendrik WittDivision Molecular Genetics, German Cancer Research Center, 69120 Heidelberg, Germany.
Stephen C Mack
Marina Ryzhova
Sebastian Bender
Martin Sill
Ruth Isserlin
Axel Benner
Thomas Hielscher
Till Milde
Marc Remke
David T W Jones
Paul A Northcott
Livia Garzia
Kelsey C Bertrand
Andrea Wittmann
Yuan Yao
Stephen S Roberts
Luca Massimi
Tim Van Meter
William A Weiss
Nalin Gupta
Wiesia Grajkowska
Boleslaw Lach
Yoon-Jae Cho
Andreas von Deimling
Andreas E Kulozik
Olaf Witt
Gary D Bader
Cynthia E Hawkins
Uri Tabori
Abhijit Guha
James T Rutka
Peter Lichter
Andrey Korshunov
Michael D Taylor
Stefan M Pfister

Funding

TR&D 3 - Network Guided Machine LearningP41GM103504 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI IDEKER, TREY · 2012 to 2024
$17.3M
Knowledge-based Gene Expression Analysis for Biomedical and Cancer ResearchR01CA121941 · NCI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI MESIROV, JILL P. · 2006 to 2016
$5.1M
CIHRNCI NIH HHS R01 CA121941NIGMS NIH HHS P41 GM103504
6 · The paper itself

Abstract

Despite the histological similarity of ependymomas from throughout the neuroaxis, the disease likely comprises multiple independent entities, each with a distinct molecular pathogenesis. Transcriptional profiling of two large independent cohorts of ependymoma reveals the existence of two demographically, transcriptionally, genetically, and clinically distinct groups of posterior fossa (PF) ependymomas. Group A patients are younger, have laterally located tumors with a balanced genome, and are much more likely to exhibit recurrence, metastasis at recurrence, and death compared with Group B patients. Identification and optimization of immunohistochemical (IHC) markers for PF ependymoma subgroups allowed validation of our findings on a third independent cohort, using a human ependymoma tissue microarray, and provides a tool for prospective prognostication and stratification of PF ependymoma patients.

Indexed as

AdultBrain NeoplasmsChromosome AberrationsCranial Fossa, PosteriorEpendymomaFemaleGene Expression ProfilingHumansMaleMiddle Aged

Identifiers

PMID21840481
PMCPMC4154494

What OpenQuestion holds

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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.