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Genome-wide methylation analysis of cerebrospinal fluid circulating tumor DNA: a new biomarker for recurrent glioblastoma

ABSTRACT: Genome-wide methylation analysis of cerebrospinal fluid circulating tumor DNA: a new biomarker for recurrent glioblastoma

PROVIDER: PRJNA846184 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR19547000_1.fastq.gz	Fastqsanger.gz
	SRR19547000_2.fastq.gz	Fastqsanger.gz
	SRR19547001_1.fastq.gz	Fastqsanger.gz
	SRR19547001_2.fastq.gz	Fastqsanger.gz
	SRR19547002_1.fastq.gz	Fastqsanger.gz

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Genome-wide methylation analysis of cerebrospinal fluid circulating tumor DNA: a new biomarker for recurrent glioblastoma [mRNA-Seq]

Project description:Background: Glioblastoma (GBM) is a common malignancy of the central nervous system (CNS) that is prone to recurrent and has a short survival period. Clinical biomarkers for the diagnosis and prognosis of recurrent GBM are lacking.Methods: We collected 4 cerebrospinal fluid (CSF) samples and 1 normal CSF sample from recurrent GBM, as well as paired tissue samples. Genome-wide methylation profiles of CSF circulating tumor DNA (ctDNA) and tissue mRNA transcription profiles were analyzed, and genes were screened by univariate Cox analysis, Lasso regression analysis, and multivariate Cox analysis by the Chinese Glioma Genome Atlas (CGGA) database. Data analysis and visualization were performed using R software, SPSS software, and Graphpad Prism.Results: By taking the intersection of differentially methylated regions (DMRs) and differentially expressed genes (DEGs), 892 genes were selected for Lasso regression analysis and multivariate Cox analysis, and 12 hub genes were finally screened to construct diagnostic and prognostic models. The diagnostic (AUC=0.982) and prognostic (5-years AUC=0.931) models based on the 12 hub genes had high accuracy.Conclusions: This study reveals that 12 hub genes in CSF ctDNA can diagnose and prognosticate recurrent GBM and provide new biomarkers for clinical research into the mechanisms of GBM recurrent.

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