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Related Experiment Video

Updated: Aug 20, 2025

Digital Spatial Profiling for Characterization of the Microenvironment in Adult-Type Diffusely Infiltrating Glioma
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Methylation Profiling in Diffuse Gliomas: Diagnostic Value and Considerations.

Anna Wenger1,2, Helena Carén1

  • 1Sahlgrenska Center for Cancer Research, Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, 413 90 Gothenburg, Sweden.

Cancers
|November 26, 2022
PubMed
Summary

DNA methylation profiling revolutionizes diffuse glioma classification, offering improved diagnostics and targeted treatments for both adult and pediatric patients. This advanced method enhances tumor identification beyond traditional histopathology.

Keywords:
MGMTcalibrated scoreclassificationdiffuse gliomasglioblastomaheterogeneityintratumourmethylation

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Area of Science:

  • Neuro-oncology
  • Molecular Pathology
  • Genomics

Background:

  • Diffuse gliomas present significant challenges in diagnosis and treatment across all age groups.
  • Despite extensive research, precise classification and targeted therapies remain critical unmet needs.

Purpose of the Study:

  • To review the distinctions between adult and pediatric diffuse gliomas.
  • To elucidate the World Health Organization (WHO) 2021 classification updates.
  • To detail the application and benefits of DNA methylation-based classification for diffuse gliomas.

Main Methods:

  • Review of current literature on diffuse glioma classification.
  • Explanation of DNA methylation profiling techniques.
  • Analysis of the WHO 2021 classification criteria.
  • Evaluation of methylation-based tumor types and subclasses in adults and children.

Main Results:

  • DNA methylation profiling enables identification of novel diffuse glioma subtypes.
  • This classification aids in accurate patient stratification for personalized treatment.
  • Methylation-based diagnosis shows promise in supplanting or complementing histopathological diagnosis.

Conclusions:

  • DNA methylation profiling represents a paradigm shift in diffuse glioma diagnostics.
  • Its utility extends to identifying new tumor entities and guiding precision oncology.
  • Considerations for diagnostic implementation include classifier thresholds, calibrated scores, and tumor heterogeneity.