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Hypomethylation of 111 Probes Predicts Poor Prognosis for Glioblastoma.


ABSTRACT: Glioblastoma (GBM) is a complicated brain tumor with heterogeneous outcome. Identification of effective biomarkers is an urgent need for the treatment decision-making and precise evaluation of prognosis. Based on a relatively large dataset of genome-wide methylation (138 glioblastoma patients), a joint-score of 111 methyl-probes was found to be of statistical significance for prognostic evaluation. Low joint-score were significantly associated with adverse outcomes (OS: P < 0.001, PFS: P = 0.03). Multivariable analyses adjusted for known risk factors confirmed the low joint-score of 111 methyl-probes as a high risk factor. The prognostic value of the methylated joint-score was further validated in another dataset of glioblastoma patients (OS: P = 0.006). Additionally, variance analysis revealed that aberrant genetic and epigenetic alterations were significantly associated with the joint-score of those methyl-probes. In conclusion, our results supported the joint-score of 111 methyl-probes as a potential prognosticator for the precision treatment of glioblastoma.

SUBMITTER: Chen Q 

PROVIDER: S-EPMC6823878 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Hypomethylation of 111 Probes Predicts Poor Prognosis for Glioblastoma.

Chen Qi Q   Zhao Min M   Yin Chengliang C   Feng Shiyu S   Hu Jian J   Zhang Qiang Q   Ma Xiaodong X   Xue Wanguo W   Shi Jinlong J  

Frontiers in neuroscience 20191025


Glioblastoma (GBM) is a complicated brain tumor with heterogeneous outcome. Identification of effective biomarkers is an urgent need for the treatment decision-making and precise evaluation of prognosis. Based on a relatively large dataset of genome-wide methylation (138 glioblastoma patients), a joint-score of 111 methyl-probes was found to be of statistical significance for prognostic evaluation. Low joint-score were significantly associated with adverse outcomes (OS: <i>P</i> < 0.001, PFS: <i  ...[more]

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