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Centrosome Amplification (CA) is a state where malignant cells contain excessive centrosomes due to cell cycle dysregulation. Altered CA has been observed in Glioblastoma (GBM). This study developed a CA-related gene model to assess the Tumor Immune Microenvironment (TIME) and prognostic outcomes for patients with GBM.
TCGA-GBM and mRNAseq_325 cohorts were obtained from the Chinese Glioma Genome Atlas (CGGA) database. CA-relevant gene modules and feature genes were identified via WGCNA analysis. Key genes were selected to develop a risk model, followed by validation of the model’s performance. We further compared the gene mutation landscape, TIME characteristics, drug sensitivity, and enriched pathways between high- and low-risk patient groups.
The brown module, which showed the highest correlation with CA, was selected to identify CA-related key genes to develop a Riskscore model. The model can accurately categorize patients into high- and low-risk groups and predict their clinical outcomes with precision. Notably, high-risk GBM patients exhibited higher StromalScore and dendritic score, and the Riskscore was positively correlated with fibroblast infiltration. Moreover, patients with different risk levels displayed distinct enriched pathways and gene mutation landscapes. Further, the high-risk group showed an evidently higher CAF score, and the differential relation between drug sensitivity and the Riskscore was detected.
Though CA was altered in GBM, its prognostic utility remained to be explored. The current study addressed this gap by developing a 6-gene risk model capable of predicting the prognosis and TIME of GBM patients.
A CA-related model was constructed to assess the prognosis and TIME of GBM patients, contributing to the management of GBM in clinical practice.
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