Evidence map›Paper›PMID 29914429›Full record

ArticleBMC cancer2018

Elevated expression of hyaluronan synthase 2 associates with decreased survival in diffusely infiltrating astrocytomas.

Mari Valkonen, Hannu Haapasalo, Kirsi Rilla, Kristiina Tyynelä-Korhonen, Ylermi Soini, Sanna Pasonen-Seppänen

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 28% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Research progress of DUB enzyme in breast cancer.Clinical and experimental medicine · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. CD44 as a tumor biomarker and therapeutic target.Experimental hematology & oncology · 2020
    Review
  9. Article
  10. Hyaluronic Acid: Incorporating the Bio into the Material.ACS biomaterials science & engineering · 2019
    Article
  11. Review
  12. Whether CD44 is an applicable marker for glioma stem cells.American journal of translational research · 2017
    Article
  13. Article
  14. Review
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

6 authors at 3 institutions in 1 country.

Mari ValkonenInstitute of Biomedicine, University of Eastern Finland, 70211, Kuopio, Finland.
Hannu HaapasaloDepartment of Pathology, University of Tampere and Fimlab Laboratories, Tampere, Finland.
Kirsi RillaInstitute of Biomedicine, University of Eastern Finland, 70211, Kuopio, Finland.
Kristiina Tyynelä-KorhonenCancer Center, Kuopio University Hospital, Kuopio, Finland.
Ylermi SoiniInstitute of Clinical Medicine/ Clinical Pathology, University of Eastern Finland, Kuopio, Finland.
Sanna Pasonen-SeppänenInstitute of Biomedicine, University of Eastern Finland, 70211, Kuopio, Finland. sanna.pasonen@uef.fi.
University of Eastern Finland · FIKuopio University Hospital · FITampere University · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDiffusely infiltrating astrocytomas originate from astrocytic glial cells or their precursor cells and are the most common type of brain tumors in adults. In this retrospective study, we investigated the content of hyaluronan, its cell surface receptor, CD44 and the expression of hyaluronan metabolizing enzymes, in these aggressive tumors. Hyaluronan is the main component of extracellular matrix in the brain. In many tumors, aberrant hyaluronan metabolism implicates aggressive disease progression and metastatic potential.

methodsOur material consisted of 163 diffusely infiltrating astrocytomas (WHO grades II-IV). Tumor samples were processed into tissue microarray (TMA) blocks. The TMA sections were stained for hyaluronan, CD44, hyaluronan synthases 1-3 (HAS1-3) and hyaluronidase 2 (HYAL2). The immunostaining results were compared with χ2 -test or with Kruskal-Wallis test for correlation with clinicopathological parameters and survival analyses were done with Kaplan-Meier log rank test and Cox regression.

resultsHyaluronan and CD44 were strongly expressed in astrocytic gliomas but their expression did not correlate with WHO grade or any other clinicopathological parameters whereas high HAS2 staining intensity was observed in IDH1 negative tumors (p = 0.003). In addition, in non-parametric tests increased HAS2 staining intensity correlated with increased cell proliferation (p = 0.013) and in log rank test with decreased overall survival of patients (p = 0.001). In the Cox regression analysis HAS2 expression turned out to be a significant independent prognostic factor (p = 0.008).

conclusionsThis study indicates that elevated expression of HAS2 is associated with glioma progression and suggests that HAS2 has a prognostic significance in diffusely infiltrating astrocytomas.

Indexed as

AdultAstrocytomaBiomarkers, TumorBrain NeoplasmsDisease ProgressionFemaleHumansHyaluronan ReceptorsHyaluronan SynthasesKaplan-Meier EstimateMaleMiddle AgedProportional Hazards ModelsRetrospective StudiesBiomarkers, TumorCD44 protein, humanHAS2 protein, humanHyaluronan ReceptorsHyaluronan SynthasesAstrocytomaGliomaHyaluronanHyaluronan synthasePrognosis

Identifiers

PMID29914429
PMCPMC6006557
OpenAlexW2808176831

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.