Evidence map›Paper›PMID 35972438›Full record

ArticleNeuro-oncology2023

IDH1/2 wildtype gliomas grade 2 and 3 with molecular glioblastoma-like profile have a distinct course of epilepsy compared to IDH1/2 wildtype glioblastomas.

Mark P van Opijnen, C Mircea S Tesileanu, Linda Dirven, Pim B van der Meer, Maarten M J Wijnenga, Arnaud J P E Vincent, Marike L D Broekman, Hendrikus J Dubbink, Johan M Kros, Sjoerd G van Duinen and 5 more

Open access · bronzeAbstract read
In one paragraph

Article in Neuro-oncology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

16 citing papers in PubMed, 22 citations in OpenAlex.

  1. Observational
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  11. What is a glioblastoma?Neuro-oncology · 2023
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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

15 authors at 3 institutions in 1 country.

Mark P van OpijnenDepartment of Neurology, Leiden University Medical Center, Leiden, the Netherlands.ORCID 0000-0002-2400-4626
C Mircea S TesileanuDepartment of Neurology, the Brain Tumor Center, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.ORCID 0000-0003-3541-9242
Linda DirvenDepartment of Neurology, Haaglanden Medical Center, The Hague, the Netherlands.ORCID 0000-0001-9157-9895
Pim B van der MeerDepartment of Neurology, Leiden University Medical Center, Leiden, the Netherlands.
Maarten M J WijnengaDepartment of Neurology, the Brain Tumor Center, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.
Arnaud J P E VincentDepartment of Neurosurgery, the Brain Tumor Center, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.
Marike L D BroekmanDepartment of Neurosurgery, Haaglanden Medical Center, The Hague, the Netherlands.
Hendrikus J DubbinkDepartment of Pathology, the Brain Tumor Center, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands.
Johan M KrosDepartment of Pathology, the Brain Tumor Center, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands.
Sjoerd G van DuinenDepartment of Pathology, Leiden University Medical Center, Leiden, the Netherlands.
Marion SmitsDepartment of Radiology and Nuclear Medicine, the Brain Tumor Center, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.ORCID 0000-0001-5563-2871
Pim J FrenchDepartment of Neurology, the Brain Tumor Center, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.
Martin J van den BentDepartment of Neurology, the Brain Tumor Center, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.
Martin J B TaphoornDepartment of Neurology, Leiden University Medical Center, Leiden, the Netherlands.
Johan A F KoekkoekDepartment of Neurology, Leiden University Medical Center, Leiden, the Netherlands.
Erasmus MC · NLLeiden University Medical Center · NLMedisch Centrum Haaglanden · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIDH1/2 wildtype (IDHwt) glioma WHO grade 2 and 3 patients with pTERT mutation and/or EGFR amplification and/or + 7/-10 chromosome gain/loss have a similar overall survival time as IDHwt glioblastoma patients, and are both considered glioblastoma IDHwt according to the WHO 2021 classification. However, differences in seizure onset have been observed. This study aimed to compare the course of epilepsy in the 2 glioblastoma subtypes.

methodsWe analyzed epilepsy data of an existing cohort including IDHwt histologically lower-grade glioma WHO grade 2 and 3 with molecular glioblastoma-like profile (IDHwt hLGG) and IDHwt glioblastoma patients. Primary outcome was the incidence proportion of epilepsy during the disease course. Secondary outcomes included, among others, onset of epilepsy, number of seizure days, and antiepileptic drug (AED) polytherapy.

resultsOut of 254 patients, 78% (50/64) IDHwt hLGG and 68% (129/190) IDHwt glioblastoma patients developed epilepsy during the disease (P = .121). Epilepsy onset before histopathological diagnosis occurred more frequently in IDHwt hLGG compared to IDHwt glioblastoma patients (90% vs 60%, P < .001), with a significantly longer median time to diagnosis (3.5 vs 1.3 months, P < .001). Median total seizure days was also longer for IDHwt hLGG patients (7.0 vs 3.0, P = .005), and they received more often AED polytherapy (32% vs 17%, P = .028).

conclusionsAlthough the incidence proportion of epilepsy during the entire disease course is similar, IDHwt hLGG patients show a significantly higher incidence of epilepsy before diagnosis and a significantly longer median time between first seizure and diagnosis compared to IDHwt glioblastoma patients, indicating a distinct clinical course.

Indexed as

Brain NeoplasmsEpilepsyGlioblastomaGliomaAnticonvulsantsHumansIsocitrate DehydrogenaseMutationSeizuresAnticonvulsantsIDH1 protein, humanIsocitrate DehydrogenaseepilepsyglioblastomagliomaIDHwtseizure

Identifiers

PMID35972438
PMCPMC10076940
OpenAlexW4291991978

What OpenQuestion holds

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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.