Cited by 346Glioma Diagnosis and TreatmentAcute Myeloid Leukemia ResearchChromatin Remodeling and Cancer

ATRX loss refines the classification of anaplastic gliomas and identifies a subgroup of IDH mutant astrocytic tumors with better prognosis

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Wiestler, Benedikt, Capper, David, Holland-Letz, Tim, Korshunov, Andrey, von Deimling, Andreas, Pfister, Stefan Michael, Platten, Michael, Weller, Michael +1 more·2013·Acta Neuropathologica

Abstract

Mutation/loss of alpha-thalassemia/mental retardation syndrome X-linked (ATRX) expression has been described in anaplastic gliomas. The present study explored the role of ATRX status in the molecular classification of anaplastic gliomas and its impact on survival in the biomarker cohort of the NOA-04 anaplastic glioma trial. Patients (n = 133) of the NOA-04 trial were analyzed for ATRX expression using immunohistochemistry. ATRX status was correlated with age, histology, isocitrate dehydrogenase (IDH), 1p/19q, alternative lengthening of telomeres (ALT) and O6-methylguanine-DNA methyltransferase (MGMT) status, and the trial efficacy endpoints. Loss of ATRX expression was detected in 45 % of anaplastic astrocytomas (AA), 27 % of anaplastic oligoastrocytomas (AOA) and 10 % of anaplastic oligodendrogliomas (AO). It was mostly restricted to IDH mutant tumors and almost mutually exclusive with 1p/19q co-deletion. The ALT phenotype was significantly correlated with ATRX loss. ATRX and 1p/19q status were used to re-classify AOA: AOA harboring ATRX loss shared a similar clinical course with AA, whereas AOA carrying 1p/19q co-deletion shared a similar course with AO. Accordingly, in a Cox regression model including ATRX and 1p/19q status, histology was no longer significantly associated with time to treatment failure. Survival analysis showed a marked separation of IDH mutant astrocytic tumors into two groups based on ATRX status: tumors with ATRX loss had a significantly better prognosis (median time to treatment failure 55.6 vs. 31.8 months, p = 0.0168, log rank test). ATRX status helps better define the clinically and morphologically mixed group of AOA, since ATRX loss is a hallmark of astrocytic tumors. Furthermore, ATRX loss defines a subgroup of astrocytic tumors with a favorable prognosis.

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Authors
Wiestler, B., Capper, D., Holland-Letz, T., Korshunov, A., von Deimling, A., Pfister, S. M., Platten, M., Weller, M., & Wick, W.
Affiliations
  • German Cancer Research Center (DE)
  • University Hospital Zurich (CH)
Corresponding author
Wick, Wolfgang
Venue
Acta Neuropathologica
Published
2013-08-01
Volume
126
Issue
3
Pages
443-451
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2158501128
Cited by
346
References
27
Citations by year
2026: 6 · 2025: 18 · 2024: 14 · 2023: 21 · 2022: 25 · 2021: 25 · 2020: 30 · 2019: 25 · 2018: 36 · 2017: 31 · 2016: 40 · 2015: 45 · 2014: 27 · 2013: 3
FWCI
18.87
Type
journal article
Language
en
Open access
Locations
  • Acta Neuropathologica (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
  • Bundesministerium für Bildung und Forschung
  • Nationales Centrum für Tumorerkrankungen Heidelberg
Topics
  • Health Sciences › Medicine › Genetics › Glioma Diagnosis and Treatment
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
Keywords
ATRX loss, anaplastic glioma, anaplastic astrocytoma, anaplastic oligoastrocytoma, anaplastic oligodendroglioma, IDH mutation, 1p/19q codeletion, alternative lengthening of telomeres, MGMT promoter status, molecular classification, prognosis, time to treatment failure
MeSH terms
X-linked Nuclear Protein, Adult, Aged, Brain Neoplasms, Chromosome Deletion, DNA Helicases, Glioma, Humans, Isocitrate Dehydrogenase, Middle Aged, Mutation, Nuclear Proteins, Prognosis, Genetic Predisposition to Disease, Tumor Suppressor Proteins

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