Evidence map›Paper›PMID 35511473›Full record

ArticleNeuro-oncology2022

DNA methylation subclass receptor tyrosine kinase II (RTK II) is predictive for seizure development in glioblastoma patients.

Franz L Ricklefs, Richard Drexler, Kathrin Wollmann, Alicia Eckhardt, Dieter H Heiland, Thomas Sauvigny, Cecile Maire, Katrin Lamszus, Manfred Westphal, Ulrich Schüller and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Neuro-oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
3.4field-weighted citation impact, top 7% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

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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

11 authors at 2 institutions in 1 country.

Franz L RicklefsDepartment of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.ORCID 0000-0002-1321-6930
Richard DrexlerDepartment of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Kathrin WollmannDepartment of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Alicia EckhardtDepartment of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Dieter H HeilandDepartment of Neurosurgery, Medical Center University of Freiburg, Freiburg, Germany (D.H.H.).
Thomas SauvignyDepartment of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Cecile MaireDepartment of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Katrin LamszusDepartment of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Manfred WestphalDepartment of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.ORCID 0000-0003-3483-6335
Ulrich SchüllerDepartment of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.ORCID 0000-0002-8731-1121
Lasse DührsenDepartment of Neurosurgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
Universität Hamburg · DEUniversity of Freiburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSeizures can present at any time before or after the diagnosis of a glioma. Roughly, 25%-30% of glioblastoma (GBM) patients initially present with seizures, and an additional 30% develop seizures during the course of the disease. Early studies failed to show an effect of general administration of antiepileptic drugs for glioblastoma patients, since they were unable to stratify patients into high- or low-risk seizure groups.

methods111 patients, who underwent surgery for a GBM, were included. Genome-wide DNA methylation profiling was performed, before methylation subclasses and copy number changes inferred from methylation data were correlated with clinical characteristics. Independently, global gene expression was analyzed in GBM methylation subclasses from TCGA datasets (n = 68).

resultsReceptor tyrosine Kinase (RTK) II GBM showed a significantly higher incidence of seizures than RTK I and mesenchymal (MES) GBM (P < .01). Accordingly, RNA expression datasets revealed an upregulation of genes involved in neurotransmitter synapses and vesicle transport in RTK II glioblastomas. In a multivariate analysis, temporal location (P = .02, OR 5.69) and RTK II (P = .03, OR 5.01) were most predictive for preoperative seizures. During postoperative follow-up, only RTK II remained significantly associated with the development of seizures (P < .01, OR 8.23). Consequently, the need for antiepileptic medication and its increase due to treatment failure was highly associated with the RTK II methylation subclass (P < .01).

conclusionOur study shows a strong correlation of RTK II glioblastomas with preoperative and long-term seizures. These results underline the benefit of molecular glioblastoma profiling with important implications for postoperative seizure control.

Indexed as

Brain NeoplasmsGlioblastomaAnticonvulsantsDNA MethylationHumansReceptor Protein-Tyrosine KinasesSeizuresAnticonvulsantsReceptor Protein-Tyrosine Kinasesgliomaglioma-related seizuresmethylationRTKII

Identifiers

PMID35511473
PMCPMC9629427
OpenAlexW4226021785

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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.