Extra-central Nervous System Metastasis from High-grade Glioma: a Single-institution Experience

Overview

Journal J Neurooncol

Publisher Springer

Date 2025 Mar 7

PMID 40055259

Authors

Christina Abi Faraj

Ian E McCutcheon

Maria A Gubbiotti

Subha Perni

Maria K Gule-Monroe

Kadir Akdemir

Victoria E Clark

Evan D Bander

Monica E Loghin

Sujit S Prabhu

Frederick F Lang

Jeffrey S Weinberg

Affiliations

Soon will be listed here.

Abstract

Purpose: Extra-central nervous system metastasis (ECM) from glioblastoma and other high-grade gliomas (HGGs) is exceedingly rare, likely due to central nervous system barriers and the short overall survival (OS) in HGG patients, limiting the timeframe for metastasis. Improved treatments have extended survival, potentially increasing ECM incidence, though mechanisms remain unclear.

Methods: This retrospective study examines HGG patients (n = 16) with ECM treated at The University of Texas M. D. Anderson Cancer Center from 1993 to 2023.

Results: Median age at HGG and ECM diagnoses were 33.6 and 35.1 years, respectively, with a slight female predominance. Diagnoses included glioblastoma, IDH-wildtype WHO Grade 4 (n = 11), epithelioid glioblastoma WHO Grade 4 (n = 2), astrocytoma IDH-mutant WHO Grade 4 (n = 2), and H3K27-altered diffuse midline glioma (n = 1). Median interval from HGG to ECM diagnosis was 10 months. The temporal lobe was the most common HGG site, with ECM primarily in cervical lymph nodes, bone, parotid gland, and cranial soft tissues. Genomic profiling identified TP53, EGFR, RB1, NF1, TERT promoter, and BRAF V600E mutations. Median OS from HGG diagnosis was 23.4 months, and median OS following ECM diagnosis was 5.9 months. Chemotherapy and radiotherapy to ECM sites extended survival. Leptomeningeal disease was present in 50% of cases and correlated with worse prognosis. ECM typically developed in advanced disease stages.

Conclusion: This study highlights genomic alterations, management, and outcomes associated with ECM in HGG. Tumor spread may stem from neurosurgical manipulation and occur via hematogenous and/or lymphatic routes. Multimodal treatment extends survival. Targeted therapies based on molecular profiles should be explored.

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