Frontiers in Neuroscience (May 2023)

Spotlights on adult patients with pediatric-type diffuse gliomas in accordance with the 2021 WHO classification of CNS tumors

  • Wenlin Chen,
  • Shanmu Jin,
  • Shanmu Jin,
  • Qianshu Liu,
  • Qianshu Liu,
  • Hai Wang,
  • Yu Xia,
  • Yu Xia,
  • Xiaopeng Guo,
  • Xiaopeng Guo,
  • Siying Guo,
  • Siying Guo,
  • Yaning Wang,
  • Yixin Shi,
  • Yixin Shi,
  • Delin Liu,
  • Delin Liu,
  • Yilin Li,
  • Yilin Li,
  • Yuekun Wang,
  • Hao Xing,
  • Junlin Li,
  • Junlin Li,
  • Jiaming Wu,
  • Jiaming Wu,
  • Tingyu Liang,
  • Tian Qu,
  • Tian Qu,
  • Huanzhang Li,
  • Huanzhang Li,
  • Tianrui Yang,
  • Tianrui Yang,
  • Kun Zhang,
  • Kun Zhang,
  • Yu Wang,
  • Yu Wang,
  • Wenbin Ma,
  • Wenbin Ma

DOI
https://doi.org/10.3389/fnins.2023.1144559
Journal volume & issue
Vol. 17

Abstract

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IntroductionThe fifth edition of the World Health Organization (WHO) classification of central nervous system (CNS) tumors released in 2021 formally defines pediatric-type diffuse gliomas. However, there is still little understanding of pediatric-type diffuse gliomas, and even less attention has been paid to adult patients. Therefore, this study describes the clinical radiological, survival, and molecular features of adult patients with pediatric-type glioma.MethodsAdult patients who underwent surgery from January 2011 to January 2022, classified as pediatric-type glioma, were included in this study. Clinical, radiological, histopathological, molecular pathological, and survival data were collected for analysis.ResultsAmong 596 adult patients, 20 patients with pediatric-type glioma were screened, including 6 with diffuse astrocytoma, MYB- or MYBL1-altered, 2 with diffuse midline glioma, H3 K27-altered, and 12 with diffuse pediatric-type high-grade glioma, H3-wildtype and IDH-wildtype. Pediatric high-grade glioma (pHGG) frequently showed tumor enhancement, peritumoral edema, and intratumoral necrosis. Adult patients with pHGG showed a longer life expectancy than adult patients with glioblastoma. Common molecular alterations included chromosome alterations and CDKN2A/B, PIK3CA, and PTEN, while altered KMT5B and MET were found to affect the overall survival.ConclusionOur study demonstrated adult patients with pediatric-type glioma. Notably, our research aims to expand the current understanding of adult patients with pediatric-type diffuse gliomas. Furthermore, personalized therapies consisting of targeted molecular inhibitors for MET and VEGFA may exhibit beneficial effects in the corresponding population.

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