Evidence map›Paper›PMID 33712524›Full record

ArticleBMJ open2021

Treatment approach and survival from glioblastoma: results from a population-based retrospective cohort study from Western Norway.

Line Sagerup Bjorland, Oystein Fluge, Bjornar Gilje, Rupavathana Mahesparan, Elisabeth Farbu

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
4.6field-weighted citation impact, top 4% 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

24 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. Independent associations of MGMT promoter methylation and TERT promoter mutation with overall survival in glioblastoma: a single-center retrospective cohort study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
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  12. Sex-Specific Differences in Patients withAJNR. American journal of neuroradiology · 2024
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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

5 authors at 2 institutions in 1 country.

Line Sagerup BjorlandDepartment of Clinical Medicine, University of Bergen Faculty of Medicine and Dentistry, Bergen, Norway line.bjorland@sus.no.ORCID http://orcid.org/0000-0003-3043-7804
Oystein FlugeDepartment of Oncology and Medical Physics, Haukeland Universitetssjukehus, Bergen, Norway.
Bjornar GiljeDepartment of Haematology and Oncology, Stavanger University Hospital, Stavanger, Norway.
Rupavathana MahesparanDepartment of Clinical Medicine, University of Bergen Faculty of Medicine and Dentistry, Bergen, Norway.
Elisabeth FarbuDepartment of Clinical Medicine, University of Bergen Faculty of Medicine and Dentistry, Bergen, Norway.
Stavanger University Hospital · NOHaukeland University Hospital · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate treatment and survival from glioblastoma in a real-world setting. DESIGN AND SETTINGS: A population-based retrospective cohort study from Western Norway.

participants363 patients aged 18 years or older diagnosed with glioblastoma between 1 January 2007 and 31 December 2014. PRIMARY AND SECONDARY OUTCOME MEASURES: Overall survival and survival rates determined by Kaplan-Meier method, groups compared by log-rank test. Associations between clinical characteristics and treatment approach assessed by logistic regression. Associations between treatment approach and outcome analysed by Cox regression.

resultsMedian overall survival was 10.2 months (95% CI 9.1 to 11.3). Resection was performed in 221 patients (60.9%), and was inversely associated with age over 70 years, higher comorbidity burden, deep-seated tumour localisation and multifocality. Median survival was 13.7 months (95% CI 12.1 to 15.4) in patients undergoing tumour resection, 8.3 months (95% CI 6.6 to 9.9) in patients undergoing biopsy and 4.5 months (95% CI 4.0 to 5.1) in patients where no surgical intervention was performed. Chemoradiotherapy according to the Stupp protocol was given to 157 patients (43%). Age over 70 years, higher comorbidity burden and cognitive impairment were associated with less intensive chemoradiotherapy. Median survival was 16.3 months (95% CI 14.1 to 18.5), 7.9 months (95% CI 6.7 to 9.0) and 2.0 months (95% CI 0.9 to 3.2) in patients treated according to the Stupp protocol, with less intensive chemoradiotherapy and with best supportive care, respectively. Surgical resection (HR 0.61 (95% CI 0.47 to 0.79)) and chemoradiotherapy according to the Stupp protocol (HR 0.09 (95% CI 0.06 to 0.15)) were strongly associated with favourable overall survival, when adjusted for clinical variables.

conclusionsIn a real-world setting, less than half of the patients received full-course chemoradiotherapy, with a median survival comparable to results from clinical trials. Survival was considerably worse in patients receiving less intensive treatment. Our results point out a substantial risk of undertreating glioblastoma, especially in elderly patients.

Indexed as

Brain NeoplasmsGlioblastomaAdolescentAgedChemoradiotherapyCohort StudiesHumansNorwayRetrospective Studiesadult oncologychemotherapyneurological oncologyradiation oncology

Identifiers

PMID33712524
PMCPMC7959220
OpenAlexW3133499363

What OpenQuestion holds

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LicenceCC BY-NC
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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.