Evidence map›Paper›PMID 33658069›Full record

ArticleRadiation oncology (London, England)2021

FET-PET radiomics in recurrent glioblastoma: prognostic value for outcome after re-irradiation?

Montserrat Carles, Ilinca Popp, Michael Maximilian Starke, Michael Mix, Horst Urbach, Tanja Schimek-Jasch, Franziska Eckert, Maximilian Niyazi, Dimos Baltas, Anca L Grosu

Abstract read
In one paragraph

Article in Radiation oncology (London, England), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Biological tumor volume predicts survival in recurrent High-Grade glioma: A multiparametric [European journal of nuclear medicine and molecular imaging · 2026
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  8. Contribution of [Pharmaceuticals (Basel, Switzerland) · 2024
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  12. Cancers · 2023
    Review
  13. Review
  14. Article
  15. Review
  16. Review
  17. Review
  18. Combination of pre-treatment dynamic [European journal of nuclear medicine and molecular imaging · 2023
    Article
  19. Article
  20. Radiation oncology (London, England) · 2022
    Article
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

10 authors.

Montserrat Carles *Division of Medical Physics, Department of Radiation Oncology, Medical Center, University of Freiburg, Robert-Koch Str. 3, 79106, Freiburg, Germany. montserrat.carles@uniklinik-freiburg.de.
Ilinca Popp *German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Partner Site Freiburg, Heidelberg, Germany.
Michael Maximilian StarkeDepartment of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Michael MixGerman Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Partner Site Freiburg, Heidelberg, Germany.
Horst UrbachDepartment of Neuroradiology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Tanja Schimek-JaschDepartment of Radiation Oncology, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Franziska EckertDepartment of Radiation Oncology, University Hospital Tübingen, Tübingen, Germany.
Maximilian NiyaziDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Dimos BaltasDivision of Medical Physics, Department of Radiation Oncology, Medical Center, University of Freiburg, Robert-Koch Str. 3, 79106, Freiburg, Germany.
Anca L GrosuGerman Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Partner Site Freiburg, Heidelberg, Germany.

Funding

Conselleria de Sanitat Universal i Salut Pública CDEI-01/20-B
6 · The paper itself

Abstract

purposeThe value of O-(2-[18F]fluoroethyl)-L-tyrosine (FET)-positron emission tomography (PET)-radiomics in the outcome assessment of patients with recurrent glioblastoma (rGBM) has not been evaluated until now. The aim of this study was to evaluate whether a prognostic model based on FET-PET radiomics features (RF) is feasible and can identify rGBM patients that would most benefit from re-irradiation.

methodsWe prospectively recruited rGBM patients who underwent FET-PET before re-irradiation (GLIAA-Pilot trial, DRKS00000633). Tumor volume was delineated using a semi-automatic method with a threshold of 1.8 times the standardized-uptake-value of the background. 135 FET-RF (histogram parameters, shape and texture features) were extracted. The analysis involved the characterization of tumor and non-tumor tissue with FET-RF and the evaluation of the prognostic value of FET-RF for time-to-progression (TTP), overall survival (OS) and recurrence location (RL).

resultsThirty-two rGBM patients constituted our cohort. FET-RF discriminated significantly between tumor and non-tumor. The texture feature Small-Zone-Low-Gray-Level-Emphasis (SZLGE) showed the best performance for the prediction of TTP (p = 0.001, satisfying Bonferroni-multiple-test significance level). Additionally, two radiomics signatures could predict TTP (TTP-radiomics-signature, p = 0.001) and OS (OS-radiomics-signature, p = 0.038). SZLGE and the TTP-radiomics-signature additionally predicted RL. Specifically, high values for TTP-radiomics-signature and for SZLGE indicated not only earlier progression, but also a RL within the initial FET-PET active volume.

conclusionOur findings suggest that FET-PET radiomics could contribute to the prognostic assessment and selection of rGBM-patients benefiting from re-irradiation. Trial registration DRKS00000633. Registered on 8th of December in 2010. https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00000633 .

Indexed as

Neoplasm Recurrence, LocalRe-IrradiationAdultAgedFemaleGlioblastomaHumansMaleMiddle AgedPositron-Emission TomographyPrognosisProspective StudiesRadiopharmaceuticalsTreatment OutcomeTyrosine(18F)fluoroethyltyrosineRadiopharmaceuticalsTyrosineFET-PETRadiomicsRecurrent-glioblastomaRe-irradiation

Identifiers

PMID33658069
PMCPMC7931514

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.