Evidence map›Paper›PMID 27248467›Full record

Trial reportOncotarget2016

A pilot study using dynamic contrast enhanced-MRI as a response biomarker of the radioprotective effect of memantine in patients receiving whole brain radiotherapy.

Philip Wong, Ilana R Leppert, David Roberge, Karim Boudam, Paul D Brown, Thierry Muanza, G Bruce Pike, Jeffrey Chankowsky, Catalin Mihalcioiu

Open access · diamondAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Oncotarget, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 3 pooled it
2.3field-weighted citation impact, top 13% 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

19 citing papers in PubMed, 3 syntheses or guidelines pooled it, 30 citations in OpenAlex.

  1. Efficacy and safety evaluation of combined therapies incorporating whole-brain radiotherapy in patients with brain metastases: a systematic review and meta-analysis.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2024
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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 at 6 institutions in 2 countries.

Philip WongDepartment of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada.
Ilana R LeppertMontreal Neurological Institute, McGill University, Montreal, Quebec, Canada.
David RobergeDepartment of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada.
Karim BoudamDepartment of Radiation Oncology, Centre Hospitalier de L'Université de Montréal, Montréal, Québec, Canada.
Paul D BrownDepartment of Radiation Oncology, Division of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America.
Thierry MuanzaDepartment of Oncology, Jewish General Hospital, Montreal, Québec, Canada.
G Bruce PikeMontreal Neurological Institute, McGill University, Montreal, Quebec, Canada.
Jeffrey ChankowskyDiagnostic Radiology, McGill University Health Center, Montréal, Québec, Canada.
Catalin MihalcioiuDepartment of Oncology, McGill University Health Center, Montreal, Québec, Canada.
Centre Hospitalier de l’Université de Montréal · CAMcGill University Health Centre · CAJewish General Hospital · CAMcGill University · CAThe University of Texas MD Anderson Cancer Center · USUniversity of Calgary · CA

Funding

NRG Oncology Network Group Operations Center - GY9 BIQSFP Reports/BudgetsU10CA180868 · NCI · NRG ONCOLOGY FOUNDATION, INC. · PI NORMAN WOLMARK · 2014 to 2026
$206.8M
NCI NIH HHS U10 CA180868
6 · The paper itself

Abstract

purposeThis pilot prospective study sought to determine whether dynamic contrast enhanced MRI (DCE-MRI) could be used as a clinical imaging biomarker of tissue toxicity from whole brain radiotherapy (WBRT).

method14 patients who received WBRT were imaged using dynamic contrast enhanced DCE-MRI prior to and at 8-weeks, 16-weeks and 24-weeks after the initiation of WBRT. Twelve of the patients were also enrolled in the RTOG 0614 trial, which randomized patients to the use of placebo or memantine. After the unblinding of the treatments received by RTOG 0614 patients, DCE-MRI measures of tumor tissue and normal appearing white matter (NAWM) vascular permeability (Initial Area Under the Curve (AUC) Blood Adjusted) was analyzed. Cognitive, quality-of-life (QOL) assessment and blood samples were collected according to the patient's ability to tolerate the exams. Circulating endothelial cells (CEC) were measured using flow cytometry.

resultsFollowing WBRT, there was an increasing trend in the vascular permeability of tumors (p=0.09) and NAWM (p=0.06) with time. Memantine significantly (p=0.01) reduced NAWM AUC changes following radiotherapy. Patients on memantine retained (COWA p= 0.03) better cognitive functions than those on placebo. No association was observed between the level of CEC and DCE-MRI changes, time from radiotherapy or memantine use.

conclusionsDCE-MRI can detect vascular damage secondary to WBRT. Our data suggests that memantine reduces WBRT-induced brain vasculature damages.

Indexed as

AdultAgedBlood-Brain BarrierBrain NeoplasmsCapillary PermeabilityContrast MediaCranial IrradiationFemaleHumansMagnetic Resonance ImagingMaleMemantineMiddle AgedPilot ProjectsRadiation InjuriesRadiation-Protective AgentsContrast MediaMemantineRadiation-Protective AgentsbiomarkerimagingmemantineMRIradiotherapy

Identifiers

PMID27248467
PMCPMC5239453
OpenAlexW2403085777

What OpenQuestion holds

Textmetadata
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.