Evidence map›Paper›PMID 32016497›Full record

ArticleStrahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al]2020

Re-irradiation for recurrent glioblastoma multiforme: a critical comparison of different concepts.

A Baehr, D Trog, M Oertel, S Welsch, K Kröger, O Grauer, U Haverkamp, H T Eich

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al], 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
1.0field-weighted citation impact, top 24% 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

12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Prospective randomized clinical studies involving reirradiation: update of a systematic review.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2023
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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

8 authors at 1 institution in 1 country.

A BaehrDepartment of Radiation Oncology, University Hospital Münster, Albert-Schweitzer Campus 1, 48149, Muenster, Germany. andrea.baehr@ukmuenster.de.ORCID http://orcid.org/0000-0003-0301-7249
D TrogDepartment of Radiation Oncology, University Hospital Münster, Albert-Schweitzer Campus 1, 48149, Muenster, Germany.
M OertelDepartment of Radiation Oncology, University Hospital Münster, Albert-Schweitzer Campus 1, 48149, Muenster, Germany.
S WelschDepartment of Radiation Oncology, University Hospital Münster, Albert-Schweitzer Campus 1, 48149, Muenster, Germany.
K KrögerDepartment of Radiation Oncology, University Hospital Münster, Albert-Schweitzer Campus 1, 48149, Muenster, Germany.
O GrauerDepartment of Neurology, University Hospital Münster, Albert-Schweitzer Campus 1, 48149, Muenster, Germany.
U HaverkampDepartment of Radiation Oncology, University Hospital Münster, Albert-Schweitzer Campus 1, 48149, Muenster, Germany.
H T EichDepartment of Radiation Oncology, University Hospital Münster, Albert-Schweitzer Campus 1, 48149, Muenster, Germany.
University Hospital Münster · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePurpose of this study was to investigate outcome and toxicity of re-irradiation for recurrent primary glioblastoma (rGBM). We evaluated a group of patients with rGBM and identical primary treatment comprising adjuvant radiotherapy (30 × 2 Gy) with concurrent temozolomide (TMZ).

methodsIn this retrospective study of 46 patients, all received adjuvant or definitive normofractionated radiotherapy to a pretreated area, some with concurrent chemotherapy. Impact of different clinical, histological, or epidemiological factors on survival and radiation toxicity was reviewed.

resultsOf 46 patients, 40 completed the intended therapy. Overall survival (OS) was 20 months (range 6-72 months). Overall survival and progression-free survival after re-irradiation (OS2 and PFS2) were 9.5 and 3.4 months (range 2-40 and 0.7-44 months). Simultaneous systemic therapy improved PFS2 and OS2 (4.3 vs. 2.0, p < 0.001 and 12 vs. 4 months, p = 0.13, respectively). Therapy with TMZ or bevacizumab improved PFS2 vs. nitrosureas (6.6 vs. 2.9, p = 0.03 and 5.1 vs. 2.9 months, p = 0.035, respectively). TMZ also improved PFS2 and OS2 vs. all other systemic therapies (6.6 vs. 4, p < 0.001 and 17 vs. 10 months, p = 0.1). In a subgroup analysis for patients with methylation of the MGMT promoter, doses of >36 Gy as well as TMZ vs. no systemic therapy improved PFS2 (p = 0.045 and p = 0.03, respectively). 27.5% of all patients had no acute toxicity. Three patients with acute and four patients with late grade 3 toxicities were reported.

conclusionNormofractionated radiotherapy is a feasible option for rGBM with a good toxicity profile. Simultaneously applied systemic therapy was associated with improved outcome. For MGMT promoter-methylated histology, higher radiation doses improved survival.

Indexed as

AdultAgedAntineoplastic AgentsBrain NeoplasmsCombined Modality TherapyFeasibility StudiesFemaleGlioblastomaHumansMaleMiddle AgedNeoplasm Recurrence, LocalProgression-Free SurvivalRadiation InjuriesRadiotherapy DosageRe-IrradiationAntineoplastic AgentsBevacizumabBrain tumorRadiotherapyrGBMTemozolomide

Identifiers

PMID32016497
OpenAlexW3005528543

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.