Cited by 57Glioma Diagnosis and TreatmentEpigenetics and DNA MethylationAcute Myeloid Leukemia Research

Clinical Neuropathology practice guide 5-2015: MGMT methylation pyrosequencing in glioblastoma: unresolved issues and open questions

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Bienkowski, Michal, Berghoff, Anna S., Marosi, Christine, Wöhrer, Adelheid, Heinzl, Harald, Hainfellner, Johannes A., Preusser, Matthias·2015·Clinical Neuropathology

Abstract

O6-methylguanine-methyltransferase (MGMT) promoter methylation status has prognostic and, in the subpopulation of elderly patients, predictive value in newly diagnosed glioblastoma. Therefore, knowledge of the MGMT promoter methylation status is important for clinical decision-making. So far, MGMT testing has been limited by the lack of a robust test with sufficiently high analytical performance. Recently, one of several available pyrosequencing protocols has been shown to be an accurate and robust method for MGMT testing in an intra- and interlaboratory ring trial. However, some uncertainties remain with regard to methodological issues, cut-off definitions, and optimal use in the clinical setting. In this article, we highlight and discuss several of these open questions. The main unresolved issues are the definition of the most relevant CpG sites to analyze for clinical purposes and the determination of a cut-off value for dichotomization of quantitative MGMT pyrosequencing results into "MGMT methylated" and "MGMT unmethylated" patient subgroups as a basis for further treatment decisions.

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Authors
Bienkowski, M., Berghoff, A. S., Marosi, C., Wöhrer, A., Heinzl, H., Hainfellner, J. A., & Preusser, M.
Affiliations
Medical University of Vienna (AT)
Corresponding author
Hainfellner, Johannes A.
Venue
Clinical Neuropathology
Published
2015-09-01
Volume
34
Issue
09
Pages
250-257
ISSN
0722-5091 (ISSN-L)
OpenAlex
W1142635415
Cited by
57
References
51
Citations by year
2026: 3 · 2025: 3 · 2024: 4 · 2023: 3 · 2022: 2 · 2021: 13 · 2020: 2 · 2019: 7 · 2018: 9 · 2017: 5 · 2016: 5 · 2015: 1
FWCI
3.73
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Clinical Neuropathology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • Universität Wien
  • Medizinische Universität Wien
  • FP7 Research Potential of Convergence Regions (REGPOT-2012-2013-1)
Topics
  • Health Sciences › Medicine › Genetics › Glioma Diagnosis and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
Keywords
MGMT promoter methylation, glioblastoma, pyrosequencing, prognostic factors, predictive biomarkers, CpG sites, interlaboratory comparison, analytical performance, treatment decision-making
MeSH terms
Clinical Decision-Making, Brain Neoplasms, Glioblastoma, Humans, Prognosis, DNA Modification Methylases, DNA Methylation, Tumor Suppressor Proteins, DNA Repair Enzymes

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