Improved prognostic stratification of patients with isocitrate dehydrogenase-mutant astrocytoma
Prognostic factors and standards of care for astrocytoma, isocitrate dehydrogenase (IDH)-mutant, CNS WHO grade 4, remain poorly defined. Here we sought to explore disease characteristics, prognostic markers, and outcome in patients with this newly defined tumor type. We determined molecular biomarke...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
06 January 2024
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| In: |
Acta neuropathologica
Year: 2024, Jahrgang: 147, Pages: 1-14 |
| ISSN: | 1432-0533 |
| DOI: | 10.1007/s00401-023-02662-1 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/s00401-023-02662-1
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| Verfasserangaben: | Michael Weller, Jörg Felsberg, Bettina Hentschel, Dorothee Gramatzki, Nadezhda Kubon, Marietta Wolter, Matthias Reusche, Patrick Roth, Dietmar Krex, Ulrich Herrlinger, Manfred Westphal, Joerg C. Tonn, Luca Regli, Claude-Alain Maurage, Andreas von Deimling, Torsten Pietsch, Emilie Le Rhun, Guido Reifenberger |
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| 245 | 1 | 0 | |a Improved prognostic stratification of patients with isocitrate dehydrogenase-mutant astrocytoma |c Michael Weller, Jörg Felsberg, Bettina Hentschel, Dorothee Gramatzki, Nadezhda Kubon, Marietta Wolter, Matthias Reusche, Patrick Roth, Dietmar Krex, Ulrich Herrlinger, Manfred Westphal, Joerg C. Tonn, Luca Regli, Claude-Alain Maurage, Andreas von Deimling, Torsten Pietsch, Emilie Le Rhun, Guido Reifenberger |
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| 520 | |a Prognostic factors and standards of care for astrocytoma, isocitrate dehydrogenase (IDH)-mutant, CNS WHO grade 4, remain poorly defined. Here we sought to explore disease characteristics, prognostic markers, and outcome in patients with this newly defined tumor type. We determined molecular biomarkers and assembled clinical and outcome data in patients with IDH-mutant astrocytomas confirmed by central pathology review. Patients were identified in the German Glioma Network cohort study; additional cohorts of patients with CNS WHO grade 4 tumors were identified retrospectively at two sites. In total, 258 patients with IDH-mutant astrocytomas (114 CNS WHO grade 2, 73 CNS WHO grade 3, 71 CNS WHO grade 4) were studied. The median age at diagnosis was similar for all grades. Karnofsky performance status at diagnosis inversely correlated with CNS WHO grade (p < 0.001). Despite more intensive treatment upfront with higher grade, CNS WHO grade was strongly prognostic: median overall survival was not reached for grade 2 (median follow-up 10.4 years), 8.1 years (95% CI 5.4-10.8) for grade 3, and 4.7 years (95% CI 3.4-6.0) for grade 4. Among patients with CNS WHO grade 4 astrocytoma, median overall survival was 5.5 years (95% CI 4.3-6.7) without (n = 58) versus 1.8 years (95% CI 0-4.1) with (n = 12) homozygous CDKN2A deletion. Lower levels of global DNA methylation as detected by LINE-1 methylation analysis were strongly associated with CNS WHO grade 4 (p < 0.001) and poor outcome. MGMT promoter methylation status was not prognostic for overall survival. Histomolecular stratification based on CNS WHO grade, LINE-1 methylation level, and CDKN2A status revealed four subgroups of patients with significantly different outcomes. In conclusion, CNS WHO grade, global DNA methylation status, and CDKN2A homozygous deletion are prognostic in patients with IDH-mutant astrocytoma. Combination of these parameters allows for improved prediction of outcome. These data aid in designing upcoming trials using IDH inhibitors. | ||
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| 700 | 1 | |a Le Rhun, Emilie |e VerfasserIn |4 aut | |
| 700 | 1 | |a Reifenberger, Guido |e VerfasserIn |4 aut | |
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