Amplification des conditions d'exploitation des MET (gain de copie de haut niveau)
Vue déterministe de l'entité source de la LJAM. L'autorité clinique demeure avec les ID de la source cités et l'état d'approbation de l ́examinateur.
| ID | BIO-MET-AMPLIFICATION |
|---|---|
| Type | Biomarqueur |
| Alias | MET CN-ampMET HLAMET amplificationMET high-level amplificationMET ампліфікація (високорівневе підвищення копій гена) |
| État | reviewed 2026-04-29 | pending_clinical_signoff |
| Maladies | DIS-NSCLC |
| Sources | SRC-ESMO-NSCLC-METASTATIC-2024 SRC-GEOMETRY-WOLF-2020 SRC-NCCN-NSCLC-2025 |
Données biomarqueurs
| Type de biomarqueur | copy_number |
|---|---|
| Détails de la mutation | {"functional_impact": "Constitutive HGF-independent MET signaling (high-level CN-amp)", "gene": "MET", "gene_hugo_id": "HGNC:7029", "variant_type": "amplification"} |
| Mesure | MéthodeFISH (MET/CEP7 ratio) preferred; tumor-tissue NGS or ctDNA NGS with copy-number calling acceptable; IHC alone is screening only UnitésRapport MET/CEP7 (≥4,0 = haut niveau) OU nombre moyen de copies génétiques MET (GCN) par cellule (≥10 = haut degré) Exigence de sensibilitéConcordance between FISH and NGS imperfect; thresholds vary by assay (Cappuzzo/Schildhaus criteria most-cited). Low-level amp (GCN 5-9) NOT actionable as monotherapy target. |
| Biomarqueurs connexes | BIO-MET BIO-EGFR-MUTATION |
Notes
Distinct from MET ex14 skipping (BIO-MET parent entity covers both; this entity is the high-level CN-amp subset). Two clinical contexts: (1) De-novo MET-amp NSCLC (~1-5% high-level) — capmatinib (GEOMETRY mono-1 high-amp cohort: ORR 40%, mPFS 5.5 mo; off-label expansion beyond ex14 label) and tepotinib (VISION cohort B). (2) Acquired MET-amp post-osimertinib resistance in EGFR-mut NSCLC — osimertinib + savolitinib (SAVANNAH; ORR ~49%; not yet FDA-approved). High-level MET amplification also drives subsets of HCC and papillary RCC. Critical: low-level amp (GCN 5-9) NOT actionable — must be high-level (GCN ≥10 OR MET/CEP7 ≥4.0).
Utilisé par
Indication
IND-NSCLC-2L-MET-AMP-CAPMATINIB- IND-NSCLC-2L-MET-AMP-CAPMATINIB