Loss of H3K27me3 in WHO grade 3 meningioma
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Loss of H3K27me3 in WHO grade 3 meningioma. / Maier, Andrea Daniela; Brøchner, Christian Beltoft; Mirian, Christian; Haslund-Vinding, Jeppe; Bartek, Jiri; Ekström, Tomas J.; Poulsen, Frantz Rom; Scheie, David; Mathiesen, Tiit.
I: Brain Tumor Pathology, Bind 39, 2022, s. 200–209.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Loss of H3K27me3 in WHO grade 3 meningioma
AU - Maier, Andrea Daniela
AU - Brøchner, Christian Beltoft
AU - Mirian, Christian
AU - Haslund-Vinding, Jeppe
AU - Bartek, Jiri
AU - Ekström, Tomas J.
AU - Poulsen, Frantz Rom
AU - Scheie, David
AU - Mathiesen, Tiit
N1 - Publisher Copyright: © 2022, The Author(s), under exclusive licence to The Japan Society of Brain Tumor Pathology.
PY - 2022
Y1 - 2022
N2 - Immunohistochemical quantification of H3K27me3 was reported to distinguish meningioma patients with an unfavorable prognosis but is not yet established as a prognostic biomarker within WHO grade 3 meningiomas. We studied H3K27me3 loss in a series of biopsies from primary and secondary malignant meningioma to validate its prognostic performance and describe if loss of H3K27me3 occurs during malignant transformation. Two observers quantified H3K27me3 status as “complete loss”, < 50% and > 50% stained cells in 110 tumor samples from a population-based consecutive cohort of 40 WHO grade 3 meningioma patients. We found no difference in overall survival (OS) in patients with > 50% H3K27me3 retention compared to < 50% in the cohort of patients with WHO grade 3 meningioma (Wald test p = 0.5). H3K27me3 staining showed heterogeneity in full section tumor slides while staining of the Barr body and peri-necrotic cells complicated quantification further. H3K27me3 expression differed without a discernible pattern between biopsies from repeated surgeries of meningioma recurrences. In conclusion, our results were not compatible with a systematic pattern of immunohistochemical H3K27me3 loss being associated with OS or malignant transformation of meningiomas and did not support H3K27me3 loss as a useful immunohistochemical biomarker within grade 3 meningiomas due to staining-specific challenges in quantification.
AB - Immunohistochemical quantification of H3K27me3 was reported to distinguish meningioma patients with an unfavorable prognosis but is not yet established as a prognostic biomarker within WHO grade 3 meningiomas. We studied H3K27me3 loss in a series of biopsies from primary and secondary malignant meningioma to validate its prognostic performance and describe if loss of H3K27me3 occurs during malignant transformation. Two observers quantified H3K27me3 status as “complete loss”, < 50% and > 50% stained cells in 110 tumor samples from a population-based consecutive cohort of 40 WHO grade 3 meningioma patients. We found no difference in overall survival (OS) in patients with > 50% H3K27me3 retention compared to < 50% in the cohort of patients with WHO grade 3 meningioma (Wald test p = 0.5). H3K27me3 staining showed heterogeneity in full section tumor slides while staining of the Barr body and peri-necrotic cells complicated quantification further. H3K27me3 expression differed without a discernible pattern between biopsies from repeated surgeries of meningioma recurrences. In conclusion, our results were not compatible with a systematic pattern of immunohistochemical H3K27me3 loss being associated with OS or malignant transformation of meningiomas and did not support H3K27me3 loss as a useful immunohistochemical biomarker within grade 3 meningiomas due to staining-specific challenges in quantification.
KW - H3K27me3
KW - Heterogeneity
KW - Meningioma
U2 - 10.1007/s10014-022-00436-3
DO - 10.1007/s10014-022-00436-3
M3 - Journal article
C2 - 35678886
AN - SCOPUS:85131690227
VL - 39
SP - 200
EP - 209
JO - Brain Tumor Pathology
JF - Brain Tumor Pathology
SN - 1433-7398
ER -
ID: 316865538