molecular tumor classification
Categorization of cancers based on their genomic and transcriptomic features rather than traditional histopathological appearance alone.
Full Definition
Molecular tumor classification represents a paradigm shift in cancer diagnosis where tumors are categorized primarily based on their underlying molecular characteristics, including gene expression patterns, mutational signatures, and genomic alterations, rather than solely on microscopic appearance. This approach has revolutionized fields like brain tumor diagnosis, where molecular markers now define diagnostic categories in WHO classification systems. The classification incorporates data from genomic sequencing, methylation profiling, and gene expression analysis to provide more precise diagnostic and prognostic information than traditional morphology-based approaches.
Usage
Usage note: Use when referring to classification systems that integrate molecular data, not just single biomarker testing.
In Context
- "The molecular tumor classification revealed a BRAF-mutated melanoma subtype with favorable prognosis." — Diagnostic report
- "Current molecular tumor classification systems integrate multiple genomic platforms for accurate diagnosis." — Clinical guidelines