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Histone H3K27M Mutation Overrides Histological Grading in Pediatric Gliomas.


ABSTRACT: Pediatric high-grade gliomas (HGG) are rare aggressive tumors that present a prognostic and therapeutic challenge. Diffuse midline glioma, H3K27M-mutant is a new entity introduced to HGG in the latest WHO classification. In this study we evaluated the presence of H3K27M mutation in 105 tumor samples histologically classified into low-grade gliomas (LGG) (n?=?45), and HGG (n?=?60). Samples were screened for the mutation in histone H3.3 and H3.1 variants to examine its prevalence, prognostic impact, and assess its potential clinical value in limited resource settings. H3K27M mutation was detected in 28 of 105 (26.7%) samples, and its distribution was significantly associated with midline locations (p-value?

SUBMITTER: Mosaab A 

PROVIDER: S-EPMC7239884 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature

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Histone H3K27M Mutation Overrides Histological Grading in Pediatric Gliomas.

Mosaab Amal A   El-Ayadi Moatasem M   Khorshed Eman N EN   Amer Nada N   Refaat Amal A   El-Beltagy Mohamed M   Hassan Zeinab Z   Soror Sameh H SH   Zaghloul Mohamed Saad MS   El-Naggar Shahenda S  

Scientific reports 20200520 1


Pediatric high-grade gliomas (HGG) are rare aggressive tumors that present a prognostic and therapeutic challenge. Diffuse midline glioma, H3K27M-mutant is a new entity introduced to HGG in the latest WHO classification. In this study we evaluated the presence of H3K27M mutation in 105 tumor samples histologically classified into low-grade gliomas (LGG) (n = 45), and HGG (n = 60). Samples were screened for the mutation in histone H3.3 and H3.1 variants to examine its prevalence, prognostic impac  ...[more]

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