Evidence map›Paper›PMID 22268080›Full record

Trial reportAJNR. American journal of neuroradiology2012

Differential gene expression in glioblastoma defined by ADC histogram analysis: relationship to extracellular matrix molecules and survival.

W B Pope, L Mirsadraei, A Lai, A Eskin, J Qiao, H J Kim, B Ellingson, P L Nghiemphu, S Kharbanda, R H Soriano and 4 more

Abstract readClinical Trial
In one paragraph

Trial report in AJNR. American journal of neuroradiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 1 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

46 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Diffusion MRI Phenotypes Predict Overall Survival Benefit from Anti-VEGF Monotherapy in Recurrent Glioblastoma: Converging Evidence from Phase II Trials.Clinical cancer research : an official journal of the American Association for Cancer Research · 2017
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  15. Radiomics for precision medicine in glioblastoma.Journal of neuro-oncology · 2022
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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

14 authors.

W B PopeDepartment of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, California 90095-1721, USA. wpope@mednet.ucla.edu
L Mirsadraei
A Lai
A Eskin
J Qiao
H J Kim
B Ellingson
P L Nghiemphu
S Kharbanda
R H Soriano
S F Nelson
W Yong
H S Phillips
T F Cloughesy

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeADC histogram analysis can stratify outcomes in patients with GBM treated with bevacizumab. Therefore, we compared gene expression between high-versus-low ADC tumors to identify gene expression modules that could underlie this difference and impact patient prognosis. MATERIALS AND

methodsUp-front bevacizumab-treated patients (N = 38) with newly diagnosed glioblastoma were analyzed by using an ADC histogram approach based on enhancing tumor. Using microarrays, we compared gene expression in high-versus-low ADC tumors in patients subsequently treated with bevacizumab. Tissue sections from a subset of tumors were stained for collagen and collagen-binding proteins. Progression-free and overall survival was determined by using Cox proportional hazard ratios and the Kaplan-Meier method with the log rank test.

resultsA total of 13 genes were expressed at 2-fold or greater levels in high- compared with low-ADC tumors at the P < .05 level. Of these, 6 encode for collagen or collagen-binding proteins. High gene expression for the collagen-binding protein decorin was associated with shorter survival (HR, 2.5; P = .03). The pattern and degree of collagen staining were highly variable in both high- and low-ADC tumors.

conclusionsHigh-ADC GBMs show greater levels of ECM protein gene expression compared with low-ADC GBMs. It is unclear whether this translates to the accumulation of higher levels of the encoded proteins. However, because ECM molecules could contribute to a proinvasive phenotype, this relationship merits further investigation.

Indexed as

AdultAgedAngiogenesis InhibitorsAntibodies, Monoclonal, HumanizedBevacizumabBiomarkers, TumorBrain NeoplasmsExtracellular Matrix ProteinsFemaleGene Expression Regulation, NeoplasticGlioblastomaHumansMaleMiddle AgedNeoplasm ProteinsReproducibility of ResultsAngiogenesis InhibitorsAntibodies, Monoclonal, HumanizedBevacizumabBiomarkers, TumorExtracellular Matrix ProteinsNeoplasm Proteins

Identifiers

PMID22268080
PMCPMC8013245

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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.