Evidence map›Paper›PMID 33963441›Full record

ArticleJournal of cancer research and clinical oncology2021

Integrated analysis of programmed cell death ligand 1 expression reveals increased levels in high-grade glioma.

Dorothee Hölzl, Georg Hutarew, Barbara Zellinger, Hans U Schlicker, Christoph Schwartz, Peter A Winkler, Karl Sotlar, Theo F J Kraus

Abstract read
In one paragraph

Article in Journal of cancer research and clinical oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–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

17 citing papers in PubMed.

  1. Article
  2. Review
  3. Loss ofJournal of Cancer · 2026
    Article
  4. Article
  5. Immunotherapy in central nervous system tumors.International journal of surgery (London, England) · 2025
    Review
  6. The -124C>T Mutation of theCurrent oncology (Toronto, Ont.) · 2025
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Biomedicines · 2022
    Article
  14. Article
  15. 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

8 authors.

Dorothee HölzlInstitute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Müllner Hauptstr. 48, 5020, Salzburg, Austria.
Georg HutarewInstitute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Müllner Hauptstr. 48, 5020, Salzburg, Austria.
Barbara ZellingerInstitute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Müllner Hauptstr. 48, 5020, Salzburg, Austria.
Hans U SchlickerInstitute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Müllner Hauptstr. 48, 5020, Salzburg, Austria.
Christoph SchwartzDepartment of Neurosurgery, University Hospital Salzburg, Paracelsus Medical University, Ignatz-Harrer-Str. 79, 5020, Salzburg, Austria.
Peter A WinklerDepartment of Neurosurgery, University Hospital Salzburg, Paracelsus Medical University, Ignatz-Harrer-Str. 79, 5020, Salzburg, Austria.
Karl SotlarInstitute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Müllner Hauptstr. 48, 5020, Salzburg, Austria.
Theo F J KrausInstitute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Müllner Hauptstr. 48, 5020, Salzburg, Austria. t.kraus@salk.at.ORCID http://orcid.org/0000-0003-2944-5129

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeGliomas are the most frequent primary brain tumors of adults. Despite intensive research, there are still no targeted therapies available. Here, we performed an integrated analysis of glioma and programmed cell death ligand 1 (PD-L1) in 90 samples including 58 glioma and 32 control brain tissues.

methodsTo identify PD-L1 expression in glioma, we performed immunohistochemical analysis of PD-L1 tumor proportion score (TPS) using the clinically valid PD-L1 22C3 antibody on 90 samples including controls and WHO grade I-IV gliomas.

resultsWe found that PD-L1 is highly expressed in a subfraction of glioma cells. Analysis of PD-L1 levels in different glioma subtypes revealed a strong intertumoral variation of PD-L1 protein. Furthermore, we correlated PD-L1 expression with molecular glioma hallmarks such as MGMT-promoter methylation, IDH1/2 mutations, TERT promoter mutations and LOH1p/19q.

conclusionIn summary, we found that PD-L1 is highly expressed in a subfraction of glioma, indicating PD-L1 as a potential new marker in glioma assessment opening up novel therapeutic approaches.

Indexed as

AdolescentAdultAgedAged, 80 and overB7-H1 AntigenBiomarkers, TumorBrain NeoplasmsCase-Control StudiesFemaleGliomaHumansImmunohistochemistryMaleMiddle AgedNeoplasm GradingYoung AdultB7-H1 AntigenBiomarkers, TumorCD274 protein, humanGlioblastomaGliomaMolecularly targeted therapyPD-L1Programmed cell death ligand 1

Identifiers

PMID33963441
PMCPMC8236471

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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.