Evidence map›Paper›PMID 26746692›Full record

ArticleJournal of neuro-oncology2016

Initial evidence that blood-borne microvesicles are biomarkers for recurrence and survival in newly diagnosed glioblastoma patients.

Sydney M Evans, Mary Putt, Xiang-Yang Yang, Robert A Lustig, Maria Martinez-Lage, Dewight Williams, Arati Desai, Ronald Wolf, Steven Brem, Cameron J Koch

Abstract read
In one paragraph

Article in Journal of neuro-oncology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 3 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

40 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  3. Pooled it
  4. Review
  5. Blood derived extracellular vesicles in patients with glioblastoma: preliminary experience from a monoinstitutional series.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
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  14. The coming of age of liquid biopsy in neuro-oncology.Brain : a journal of neurology · 2023
    Article
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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

10 authors.

Sydney M EvansDepartment of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA. sydevans@mail.med.upenn.edu.ORCID http://orcid.org/0000-0002-0216-1014
Mary PuttDepartment of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Xiang-Yang YangDepartment of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Robert A LustigDepartment of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Maria Martinez-LageDepartment of Pathology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Dewight WilliamsDepartment of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Arati DesaiDepartment of Hematology/Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Ronald WolfDepartment of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Steven BremDepartment of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Cameron J KochDepartment of Radiation Oncology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.

Funding

UNIVERSITY OF PENNSYLVANIA CAN CTR SUPPORT GRANTP30CA016520 · NCI · UNIVERSITY OF PENNSYLVANIA · PI Robert H. Vonderheide · 1985 to 2026
$222.3M
TUMOR HYPOXIA, PHOTOSENSITIZER, VASCULARITY AND PDTP01CA087971 · NCI · UNIVERSITY OF PENNSYLVANIA · PI BUSCH, THERESA M, CENGEL, KEITH A · 2001 to 2019
$24.8M
NCI NIH HHS P01 CA087971NCI NIH HHS P30 CA016520NCI NIH HHS P30-CA016520
6 · The paper itself

Abstract

The purpose of this pilot study was to determine whether blood-borne microvesicles from newly diagnosed glioblastoma patients could be used as biomarkers. We collected 2.8 mL blood from 16 post-operative patients at the time that they were being simulated for chemoradiation therapy (radiation with concurrent temozolomide). Two additional samples were collected during chemoradiation therapy and a final sample was collected at the end of chemoradiation therapy. Patients continued with the therapy suggested by their physicians, based on tumor conference consensus and were followed for recurrence and overall survival. Microvesicles were isolated using serial centrifugation and stained for surface markers (Annexin V for phosphotidyl serine, CD41 for platelets, anti-EGFR for tumor cells, and CD235 for red blood cells). Flow cytometry analysis was performed. Our findings provide initial evidence that increases in Annexin V positive microvesicle levels during chemoradiation therapy are associated with earlier recurrence and shorter overall survival in newly diagnosed glioblastoma patients. The effect is dramatic, with over a four-fold increase in the hazard ratio for an individual at the 75th versus the 25th percentile. Moreover the pattern of Annexin V positive microvesicles remain significant after adjustment for confounding clinical variables that have previously been shown to be prognostic for recurrence and survival. Inclusion of neutrophil levels at the start of chemoradiation therapy in the model yielded the largest attenuation of the observed association. Further studies will be needed to verify and further investigate the association between these two entities.

Indexed as

AgedAntineoplastic Combined Chemotherapy ProtocolsBiomarkers, TumorBrain NeoplasmsCell-Derived MicroparticlesChemoradiotherapyFemaleFollow-Up StudiesGlioblastomaHumansMaleMiddle AgedNeoplasm Recurrence, LocalNeoplasm StagingPrognosisSurvival RateBiomarkers, TumorBiomarkerCirculating vesiclesExosomesGlioblastomaMicrovesiclesOutcome

Identifiers

PMID26746692
PMCPMC4783260

What OpenQuestion holds

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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.