Evidence map›Paper›PMID 30790133›Full record

ArticleJournal of neuro-oncology2019

Role of postoperative tumor volume in patients with MGMT-unmethylated glioblastoma.

Arthur H A Sales, Stefanie Bette, Melanie Barz, Thomas Huber, Benedikt Wiestler, Yu-Mi Ryang, Friederike Schmidt-Graf, Friederike Liesche, Stephanie E Combs, Bernhard Meyer and 1 more

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Article in Journal of neuro-oncology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

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

6 citing papers in PubMed.

  1. Article
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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.

Arthur H A SalesDepartment of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany.
Stefanie BetteDepartment of Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
Melanie BarzDepartment of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany.
Thomas HuberDepartment of Radiology, University Hospital, LMU Munich, Munich, Germany.
Benedikt WiestlerDepartment of Neuroradiology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
Yu-Mi RyangDepartment of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany.
Friederike Schmidt-GrafDepartment of Neurology, Technische Universität München, Munich, Germany.
Friederike LiescheDepartment of Neuropathology, Technische Universität München, Munich, Germany.
Stephanie E CombsDepartment of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
Bernhard MeyerDepartment of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany.
Jens GemptDepartment of Neurosurgery, Klinikum rechts der Isar, Technische Universität München, Ismaninger Str. 22, 81675, Munich, Germany. Jens.Gempt@tum.de.ORCID http://orcid.org/0000-0003-4123-4690

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe aim of this study is to investigate the association between postoperative tumor volume and overall survival (OS) of O

methodsOne hundred-twenty-six patients with MGMT-unmethylated glioblastoma who were treated either with surgical resection or needle biopsy between 2006 and 2015 were included in this retrospective cohort. Pre- and postcontrast T1 weighted images were evaluated in order to determine pre- and postoperative contrast-enhancing tumor volumes (CE-TV). Cox regression models adjusted for other significant prognostic factors were used to investigate the association between postoperative tumor volume and survival.

resultsComplete resection of CE-TV was significantly associated with longer OS in the univariate analysis (HR 0.61; 95% CI 0.40-0.94; p = 0.02). However, this fact could not be confirmed after adjusting the model for other relevant prognostic factors (HR 1.01; 95% CI 0.65-1.55; p = 0.962). Postoperative CE-TV was significantly associated with survival in both univariate (HR: 1.04; 95% CI 1.025-1.055; p < 0.001) and multivariate analyses (HR: 1.027; 95% CI 1.005-1.049; p = 0.014).

conclusionsAlthough complete resection of tumor tissue was not significantly associated with longer OS in MGMT-unmethylated GBM patients, maximum safe resection should always be attempted, since postoperative tumor volume is strongly associated with OS.

Indexed as

DNA MethylationPostoperative ComplicationsDNA Modification MethylasesDNA Repair EnzymesFemaleFollow-Up StudiesGlioblastomaHumansMaleMiddle AgedNeurosurgeryPrognosisRetrospective StudiesSurvival RateTumor Suppressor ProteinsDNA Modification MethylasesDNA Repair EnzymesMGMT protein, humanTumor Suppressor ProteinsGlioblastomaGross-total resectionMGMT-methylationSurgery

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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.