Evidence map›Paper›PMID 30732550›Full record

Trial reportJournal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism2020

Physiologic MR imaging of the tumor microenvironment revealed switching of metabolic phenotype upon recurrence of glioblastoma in humans.

Andreas Stadlbauer, Stefan Oberndorfer, Max Zimmermann, Bertold Renner, Michael Buchfelder, Gertraud Heinz, Arnd Doerfler, Andrea Kleindienst, Karl Roessler

Abstract readClinical Trial
In one paragraph

Trial report in Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
–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

21 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Imaging effective oxygen diffusivity in the human brain with multiparametric magnetic resonance imaging.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
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  13. Association between tissue hypoxia, perfusion restrictions, and microvascular architecture alterations with lesion-induced impairment of neurovascular coupling.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2022
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  20. Metabolic heterogeneity and adaptability in brain tumors.Cellular and molecular life sciences : CMLS · 2020
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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

9 authors.

Andreas StadlbauerDepartment of Neurosurgery, University of Erlangen-Nürnberg, Erlangen, Germany.
Stefan OberndorferDepartment of Neurology, University Clinic of St. Pölten, St. Pölten, Austria.
Max ZimmermannDepartment of Neurosurgery, University of Erlangen-Nürnberg, Erlangen, Germany.
Bertold RennerInstitute of Experimental and Clinical Pharmacology and Toxicology, University of Erlangen-Nürnberg, Erlangen, Germany.
Michael BuchfelderDepartment of Neurosurgery, University of Erlangen-Nürnberg, Erlangen, Germany.
Gertraud HeinzInstitute of Medical Radiology, University Clinic of St. Pölten, St. Pölten, Austria.
Arnd DoerflerDepartment of Neuroradiology, University of Erlangen-Nürnberg, Erlangen, Germany.
Andrea KleindienstDepartment of Neurosurgery, University of Erlangen-Nürnberg, Erlangen, Germany.ORCID 0000-0003-4758-0324
Karl RoesslerDepartment of Neurosurgery, University of Erlangen-Nürnberg, Erlangen, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Treating recurrent glioblastoma (GB) is one of the challenges in modern neurooncology. Hypoxia, neovascularization, and energy metabolism are of crucial importance for therapy failure and recurrence. Twenty-one patients with initially untreated GB who developed recurrence were examined with a novel MRI approach for noninvasive visualization of the tumor microenvironment (TME). Imaging biomarker information about oxygen metabolism (mitochondrial oxygen tension) and neovascularization (microvascular density and type) were fused for classification of five different TME compartments: necrosis, hypoxia with/without neovascularization, oxidative phosphorylation, and glycolysis. Volume percentages of these TME compartments were compared between untreated and recurrent GB. At initial diagnosis, all 21 GB showed either the features of a glycolytic dominant phenotype with a high percentage of functional neovasculature (N = 12) or those of a necrotic/hypoxic dominant phenotype with a high percentage of defective tumor neovasculature (N = 9). At recurrence, all 21 GB revealed switching of the initial metabolic phenotype: either from the glycolytic to the necrotic/hypoxic dominant phenotype or vice-versa. A necrotic/hypoxic phenotype at recurrence was associated with a higher rate of multifocality of the recurrent lesions. Our MRI approach may be helpful for a better understanding of treatment-induced metabolic phenotype switching and for future studies developing targeted therapeutic strategies for recurrent GB.

Indexed as

Brain NeoplasmsDatabases, FactualGlioblastomaMagnetic Resonance ImagingNeoplasm Recurrence, LocalNeovascularization, PathologicTumor MicroenvironmentAgedFemaleGlycolysisHumansMaleMiddle AgedRetrospective StudiesangiogenesisGlioblastomahypoxiarecurrencetreatment failuretumor microenvironment

Identifiers

PMID30732550
PMCPMC7026844

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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.