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024 7 _ |a 10.1093/neuonc/noaf015
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024 7 _ |a 1522-8517
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024 7 _ |a 1523-5866
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037 _ _ |a DKFZ-2025-00197
041 _ _ |a English
082 _ _ |a 610
100 1 _ |a Le Rhun, Emilie
|0 0000-0002-9408-3278
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245 _ _ |a The clinical and molecular landscape of diffuse hemispheric glioma, H3 G34-mutant.
260 _ _ |a Oxford
|c 2025
|b Oxford Univ. Press
336 7 _ |a article
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336 7 _ |a ARTICLE
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336 7 _ |a Journal Article
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500 _ _ |a #LA:B300# / Volume 27, Issue 6, June 2025, Pages 1519–1535
520 _ _ |a Diffuse hemispheric glioma, histone 3 (H3) G34-mutant, has been newly defined in the 2021 WHO classification of central nervous system tumors. Here we sought to define the prognostic roles of clinical, neuroimaging, pathological, and molecular features of these tumors.We retrospectively assembled a cohort of 114 patients (median age 22 years) with diffuse hemispheric glioma, H3 G34-mutant, CNS WHO grade 4 and profiled the imaging, histological and molecular landscape of their tumors.Compared with glioblastoma, H3 G34-mutant diffuse hemispheric gliomas exhibited less avid contrast enhancement, necrosis and edema on MRI. Comprehensive analyses of mutational and DNA copy number profiles revealed recurrent mutations in TP53 and ATRX, homozygous deletions of CDKN2A/B, and amplifications of PDGFRA, EGFR, CCND2, and MYCN. MGMT promoter methylation was detected in 79 tumors (75%); 11 tumors (13%) showed DNA copy number profiles suggestive of circumscribed deletions on 10q26.3 involving the MGMT locus. Median survival was 21.5 months. Female sex, gross total resection, and MGMT promoter methylation were positive prognostic factors on univariate analysis. Among radiological, pathological and molecular features, absence of pial invasion, and presence of microvascular proliferation and CDK6 amplification were positive prognostic factors on univariate analyses.This study refines the clinical and molecular landscape of H3 G34-mutant diffuse hemispheric gliomas. Dedicated trials for this novel tumor type are urgently needed.
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650 _ 7 |a MGMT
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650 _ 7 |a Glioblastoma
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650 _ 7 |a histone
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650 _ 7 |a loss
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650 _ 7 |a methylation
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700 1 _ |a Bink, Andrea
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700 1 _ |a Felsberg, Joerg
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700 1 _ |a Gramatzki, Dorothee
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700 1 _ |a Brandner, Sebastian
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700 1 _ |a Benhamida, Jamal K
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700 1 _ |a Wick, Antje
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700 1 _ |a Tonn, Joerg C
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700 1 _ |a Mohme, Malte
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700 1 _ |a Tabatabai, Ghazaleh
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700 1 _ |a Capper, David
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700 1 _ |a Snuderl, Matija
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700 1 _ |a Razis, Evangelia
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700 1 _ |a Ronellenfitsch, Michael W
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700 1 _ |a Neidert, Nicolas
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700 1 _ |a Ng, Ho-Keung
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700 1 _ |a Pohl, Ute
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700 1 _ |a Bale, Tejus
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700 1 _ |a Quach, Stefanie
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700 1 _ |a Rieger, David
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700 1 _ |a Schüller, Ulrich
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700 1 _ |a Onken, Julia
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700 1 _ |a Drüschler, Katharina
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700 1 _ |a Maurage, Claude-Alain
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700 1 _ |a Regli, Luca
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700 1 _ |a Healy, Estelle
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700 1 _ |a Graham, Maya
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700 1 _ |a Hortobagyi, Tibor
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700 1 _ |a Paine, Simon
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700 1 _ |a Bridges, Leslie
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700 1 _ |a Lausova, Tereza
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700 1 _ |a Medici, Valentina
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700 1 _ |a Sievers, Philipp
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700 1 _ |a Schrimpf, David
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700 1 _ |a Wick, Wolfgang
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700 1 _ |a Sahm, Felix
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700 1 _ |a Reifenberger, Guido
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700 1 _ |a von Deimling, Andreas
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700 1 _ |a Weller, Michael
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