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@ARTICLE{Braczynski:148298,
author = {A. K. Braczynski and D. Capper$^*$ and D. T. W. Jones$^*$
and J. Schittenhelm and D. Stichel$^*$ and A. von
Deimling$^*$ and P. Harter$^*$ and M. Mittelbronn},
title = {{H}igh density {DNA} methylation array is a reliable
alternative for {PCR}-based analysis of the {MGMT} promoter
methylation status in glioblastoma.},
journal = {Pathology, research and practice},
volume = {216},
number = {1},
issn = {0344-0338},
address = {München},
publisher = {Elsevier},
reportid = {DKFZ-2019-02862},
pages = {152728},
year = {2020},
note = {Volume 216, Issue 1, January 2020, 152728},
abstract = {MGMT promoter methylation status is an important biomarker
predicting survival and response to chemotherapy in patients
suffering from glioblastoma. Since new diagnostic methods
such as methylome-based classification of brain tumors are
more and more frequently performed, we aimed at comparing
the suitability of calculating the MGMT promoter methylation
status in a quantitative manner from the methylome profiling
as compared to the classic gold standard assessment by
PCR.Our cohort consisted of 39 cases diagnosed as
'glioblastoma, IDH-wildtype' of which the MGMT promoter
methylation status was analyzed with both
methylation-specific PCR and high density DNA methylation
array using the STP-27 algorithm. Contradictory results were
validated by pyrosequencing.The inter-method reliability
reached $77\%$ (kappa-coefficient: 0.58) when also cases
with an inconclusive result in one or the other method were
taken into account. When only cases with conclusive results
in both methods were considered, a very high inter-method
reliability of $91\%$ (kappa-coefficient: 0.86) could be
achieved. For 'methylated' cases, no contradictory results
were obtained. For the remaining two cases with discrepant
results subsequent pyrosequencing analyses spoke in favor of
each previously applied method once.In addition to its
benefits for molecular subgrouping and copy number analysis
of brain tumors, DNA-methylation based classification is a
highly reliable tool for the assessment of MGMT promoter
methylation status in glioblastoma patients.},
cin = {DD01 / B360 / B300 / BE01},
ddc = {610},
cid = {I:(DE-He78)DD01-20160331 / I:(DE-He78)B360-20160331 /
I:(DE-He78)B300-20160331 / I:(DE-He78)BE01-20160331},
pnm = {312 - Functional and structural genomics (POF3-312)},
pid = {G:(DE-HGF)POF3-312},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:31784096},
doi = {10.1016/j.prp.2019.152728},
url = {https://inrepo02.dkfz.de/record/148298},
}