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[Meningioma].

Hikaru Sasaki1

  • 1Department of Neurosurgery, Tokyo Dental College Ichikawa General Hospital.

No Shinkei Geka. Neurological Surgery
|September 24, 2023
PubMed
Summary
This summary is machine-generated.

Molecular markers refine meningioma classification beyond histology. Understanding driver gene mutations (like NF2) and prognostic markers improves tumor behavior comprehension and patient management.

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Area of Science:

  • Neuro-oncology
  • Molecular pathology
  • Genomics

Context:

  • The World Health Organization 2021 classification categorizes meningioma into 15 subtypes based on histology.
  • Recent research highlights the significance of driver gene mutations and molecular prognostic markers in understanding meningioma behavior.
  • Meningiomas exhibit distinct molecular stratification, primarily linked to NF2 mutations or chromosome 22 alterations.

Purpose:

  • To explore the role of molecular markers in meningioma classification and prognosis.
  • To correlate specific gene mutations with tumor characteristics and clinical outcomes.
  • To integrate molecular insights into the clinical management of meningiomas.

Summary:

  • Meningiomas are molecularly stratified, with over 50% harboring NF2 mutations or chromosome 22 monosomy.
  • Other meningiomas show mutations in AKT1, SMO, KLF4, or TRAF7, which are mutually exclusive and linked to tumor location, histology, and grade.
  • Higher-grade meningiomas often have chromosomal aberrations (1p, 6q, 14q loss) and NF2 mutations.
  • CDKN2A/CDKN2B deletion or TERT promoter mutations predict poor prognosis and are now part of anaplastic meningioma criteria.

Impact:

  • Molecular markers are crucial for accurate meningioma grading and prognosis.
  • The integration of molecular data with clinical and histological parameters enhances patient management strategies.
  • Future treatments for meningiomas are expected to be guided by molecular-clinical associations.