Abstract
Background: The molecular profiling of glioblastoma (GBM) based on transcriptomic analysis could provide precise treatment and prognosis. However, current subtyping (classic, mesenchymal, neural, proneural) is time-consuming and cost-intensive hindering its clinical application. A simple and efficient method for classification was imperative.
Methods: In this study, to simplify GBM subtyping more efficiently, we applied a random forest algorithm to conduct 26 genes as a cluster featured with hub genes, OLIG2 and CD276. Functional enrichment analysis and Protein–protein interaction were performed using the genes in this gene cluster. The classification efficiency of the gene cluster was validated by WGCNA and LASSO algorithms, and tested in GSE84010 and Gravandeel’s GBM datasets.
Results: The gene cluster (n = 26) could distinguish mesenchymal and proneural excellently (AUC = 0.92), which could be validated by multiple algorithms (WGCNA, LASSO) and datasets (GSE84010 and Gravandeel’s GBM dataset). The gene cluster could be functionally enriched in DNA elements and T cell associated pathways. Additionally, five genes in the signature could predict the prognosis well (p = 0.0051 for training cohort, p = 0.065 for test cohort).
Conclusions: Our study proved the accuracy and efficiency of random forest classifier for GBM subtyping, which could provide a convenient and efficient method for subtyping Proneural and Mesenchymal GBM.
Original language | English |
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Article number | 404 |
Number of pages | 13 |
Journal | Journal of translational medicine |
Volume | 19 |
Issue number | 1 |
Early online date | 26 Sept 2021 |
DOIs | |
Publication status | Published - Dec 2021 |
Bibliographical note
Funding Information:This work was supported by the National Natural Science Foundation of China (82072785, 82072784) and the Shanghai Development and Reform Commission Major Project (2018SHZDZX01). The funders had no role in study design, data collection, interpretation, or the decision to submit the work for publication.
Publisher Copyright:
© 2021, The Author(s).
Keywords
- CD276
- Glioblastoma
- Molecular subtype
- OLIG2
- Random forest
ASJC Scopus subject areas
- General Biochemistry,Genetics and Molecular Biology