Evidence map›Paper›PMID 35779193›Full record

ArticleJournal of neuro-oncology2022

Clinical, histopathological, and molecular features of IDH-wildtype indolent diffuse glioma: comparison with typical glioblastoma.

Hayato Suzuki, Takahiro Ono, Souichi Koyota, Masataka Takahashi, Tamotsu Sugai, Hiroshi Nanjo, Hiroaki Shimizu

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Article in Journal of neuro-oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–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

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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

2 citing papers in PubMed.

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4 · The record

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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

7 authors.

Hayato SuzukiDepartment of Neurosurgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan.
Takahiro OnoDepartment of Neurosurgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan. t.ono@med.akita-u.ac.jp.ORCID http://orcid.org/0000-0001-9772-5478
Souichi KoyotaMolecular Medicine Laboratory, Bioscience Education and Research Support Center, Akita University School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan.
Masataka TakahashiDepartment of Neurosurgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan.
Tamotsu SugaiDepartment of Pathology, Iwate Medical University, 1-1-1 Idaidori, Yahaba-cho, Shiwa-gun, Iwate, 028-3694, Japan.
Hiroshi NanjoDepartment of Surgical Pathology, Akita University Hospital, 44-2 Hasunuma Hiroomote, Akita, Akita, 010-8543, Japan.
Hiroaki ShimizuDepartment of Neurosurgery, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita, 010-8543, Japan.

Funding

Japan Society for the Promotion of Science JP19K16823
6 · The paper itself

Abstract

purposeIDH-wildtype (IDHwt) diffuse gliomas are treated as glioblastoma, however, some of these may show less aggressive clinical courses. The authors investigated the clinical, histopathological, and molecular characteristics of such IDHwt indolent diffuse gliomas (iDGwt), which have not been well documented in the literature.

methodsAdult patients with IDHwt gliomas admitted between 2011 and 2020 were surveyed. In this particular study, the clinical indolence was defined mainly as having a small enhancing lesion and a stable period for more than 1 month before surgery. The current WHO diagnostic criteria were adapted for the diagnoses. Gene mutations and copy number changes in 43 representative glioma-associated genes, MGMT promoter methylation status, and survival data were compared with those of The Cancer Genome Atlas reference cohort.

resultsNine out of 180 surveyed cases (5.0%) fulfilled the present criteria of the iDGwt. Considering the representative regulatory pathways, 8 (88.9%), 4 (44.4%), and 1 (11.1%) case had genetic alterations in the PI3K/MAPK, TP53, and RB pathways, respectively. The frequency of the RB pathway alteration was significantly lower than that in the reference cohort (281 of 362 cases: 77.6%). Two cases (22.2%) showing EGFR amplification met the diagnostic criteria for glioblastoma, and the frequency was significantly lower than that in the reference cohort (412 of 426 cases: 96.7%). The overall survival (median: 37.5 months) in the present series was significantly longer than that in the reference cohort (n = 426, median: 13.9 months).

conclusionsiDGwt lacked the molecular features of glioblastoma except for the PI3K/MAPK pathway alteration.

Indexed as

Brain NeoplasmsGlioblastomaGliomaAdultHumansIsocitrate DehydrogenaseKaplan-Meier EstimateMutationPhosphatidylinositol 3-KinasesPrognosisIsocitrate DehydrogenasePhosphatidylinositol 3-KinasesEGFR amplificationGain of chromosome 7 and loss of chromosome 10IDH-wildtype gliomaPI3K/MAPK pathwayTERT promoter mutation

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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.