A CNS Tumor Methylation Classifier is an advanced diagnostic tool that classifies central nervous system (CNS) tumors by analyzing DNA methylation patterns, an epigenetic modification where a methyl group is added to DNA, potentially silencing genes. These changes can lead to uncontrolled cell growth and cancer development. By identifying these unique methylation signatures, the classifier accurately determines the type and subtype of brain tumors, enabling more precise diagnosis and personalized treatment planning.
The World Health Organization’s 2021 CNS Tumor Classification has redefined how we diagnose brain tumors — combining histological and molecular insights to ensure accuracy.
*Tumor cellularity for fresh tissue specimens should be pre-evaluated and mentioned in the Test Requisition Form (TRF)
e.g. Resolves histologically ambiguous cases and complex differentials (e.g., High grade neuroepithelial tumor (HGNET) vs Atypical teratoid/rhabdoid tumor (AT/RT).
e.g. WNT-activated medulloblastoma has a significantly better prognosis compared to SHH-activated or Group 3/4 variants.
Enables treatment planning tailored to the tumor’s molecular profile — identifies resistance patterns and emerging targets.
IDH1, IDH2, H3-3A, MGMT, ATRX, TERTp, CDKN2A, CDKN2B, EGFR, GLI2, MET, MYB, MYBL1, MYCN, NF1, NF2, PDGFRA, PTCH1, PTEN, SMARCB1, TP53 … etc. Alterations in all chromosomes including 1p/19q co-deletion, chr7 gain/chr 10 loss, chr 14 alterations.