Evidence map›Paper›PMID 26448943›Full record

Trial reportBioMed research international2015

The Diagnostic Ability of Follow-Up Imaging Biomarkers after Treatment of Glioblastoma in the Temozolomide Era: Implications from Proton MR Spectroscopy and Apparent Diffusion Coefficient Mapping.

Martin Bulik, Tomas Kazda, Pavel Slampa, Radim Jancalek

Open access · hybridAbstract readClinical Trial
In one paragraph

Trial report in BioMed research international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
2.8field-weighted citation impact, top 10% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

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  18. Pseudoprogression of brain tumors.Journal of magnetic resonance imaging : JMRI · 2018
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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

4 authors at 3 institutions in 1 country.

Martin BulikDepartment of Diagnostic Imaging, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic ; Department of Diagnostic Imaging, St. Anne's University Hospital Brno, 656 91 Brno, Czech Republic.
Tomas KazdaInternational Clinical Research Center, St. Anne's University Hospital Brno, 656 91 Brno, Czech Republic ; Department of Radiation Oncology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic ; Department of Radiation Oncology, Masaryk Memorial Cancer Institute, 656 53 Brno, Czech Republic.
Pavel SlampaDepartment of Radiation Oncology, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic ; Department of Radiation Oncology, Masaryk Memorial Cancer Institute, 656 53 Brno, Czech Republic.
Radim JancalekInternational Clinical Research Center, St. Anne's University Hospital Brno, 656 91 Brno, Czech Republic ; Department of Neurosurgery, St. Anne's University Hospital Brno, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic ; Department of Neurosurgery, St. Anne's University Hospital Brno, 656 91 Brno, Czech Republic.
Masaryk Memorial Cancer Institute · CZSt. Anne's University Hospital Brno · CZUniversity Hospital Brno · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo prospectively determine institutional cut-off values of apparent diffusion coefficients (ADCs) and concentration of tissue metabolites measured by MR spectroscopy (MRS) for early differentiation between glioblastoma (GBM) relapse and treatment-related changes after standard treatment. MATERIALS AND

methodsTwenty-four GBM patients who received gross total resection and standard adjuvant therapy underwent MRI examination focusing on the enhancing region suspected of tumor recurrence. ADC maps, concentrations of N-acetylaspartate, choline, creatine, lipids, and lactate, and metabolite ratios were determined. Final diagnosis as determined by biopsy or follow-up imaging was correlated to the results of advanced MRI findings.

resultsEighteen (75%) and 6 (25%) patients developed tumor recurrence and pseudoprogression, respectively. Mean time to radiographic progression from the end of chemoradiotherapy was 5.8 ± 5.6 months. Significant differences in ADC and MRS data were observed between those with progression and pseudoprogression. Recurrence was characterized by N-acetylaspartate ≤ 1.5 mM, choline/N-acetylaspartate ≥ 1.4 (sensitivity 100%, specificity 91.7%), N-acetylaspartate/creatine ≤ 0.7, and ADC ≤ 1300 × 10(-6) mm(2)/s (sensitivity 100%, specificity 100%).

conclusionInstitutional validation of cut-off values obtained from advanced MRI methods is warranted not only for diagnosis of GBM recurrence, but also as enrollment criteria in salvage clinical trials and for reporting of outcomes of initial treatment.

Indexed as

Biomarkers, TumorBrain NeoplasmsChemoradiotherapyDacarbazineDiffusion Tensor ImagingFemaleFollow-Up StudiesGlioblastomaHumansMaleMiddle AgedMolecular ImagingNeoplasm Recurrence, LocalOutcome Assessment, Health CarePrognosisProton Magnetic Resonance SpectroscopyBiomarkers, TumorDacarbazineTemozolomide

Identifiers

PMID26448943
PMCPMC4584055
OpenAlexW1756272414

What OpenQuestion holds

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LicenceCC BY
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.