Erschienen in:
24.08.2022 | Imaging Informatics and Artificial Intelligence
Image-based deep learning identifies glioblastoma risk groups with genomic and transcriptomic heterogeneity: a multi-center study
verfasst von:
Jing Yan, Qiuchang Sun, Xiangliang Tan, Chaofeng Liang, Hongmin Bai, Wenchao Duan, Tianhao Mu, Yang Guo, Yuning Qiu, Weiwei Wang, Qiaoli Yao, Dongling Pei, Yuanshen Zhao, Danni Liu, Jingxian Duan, Shifu Chen, Chen Sun, Wenqing Wang, Zhen Liu, Xuanke Hong, Xiangxiang Wang, Yu Guo, Yikai Xu, Xianzhi Liu, Jingliang Cheng, Zhi-Cheng Li, Zhenyu Zhang
Erschienen in:
European Radiology
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Ausgabe 2/2023
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Abstract
Objectives
To develop and validate a deep learning imaging signature (DLIS) for risk stratification in patients with multiforme (GBM), and to investigate the biological pathways and genetic alterations underlying the DLIS.
Methods
The DLIS was developed from multi-parametric MRI based on a training set (n = 600) and validated on an internal validation set (n = 164), an external test set 1 (n = 100), an external test set 2 (n = 161), and a public TCIA set (n = 88). A co-profiling framework based on a radiogenomics analysis dataset (n = 127) using multiscale high-dimensional data, including imaging, transcriptome, and genome, was established to uncover the biological pathways and genetic alterations underpinning the DLIS.
Results
The DLIS was associated with survival (log-rank p < 0.001) and was an independent predictor (p < 0.001). The integrated nomogram incorporating the DLIS achieved improved C indices than the clinicomolecular nomogram (net reclassification improvement 0.39, p < 0.001). DLIS significantly correlated with core pathways of GBM (apoptosis and cell cycle-related P53 and RB pathways, and cell proliferation-related RTK pathway), as well as key genetic alterations (del_CDNK2A). The prognostic value of DLIS-correlated genes was externally confirmed on TCGA/CGGA sets (p < 0.01).
Conclusions
Our study offers a biologically interpretable deep learning predictor of survival outcomes in patients with GBM, which is crucial for better understanding GBM patient’s prognosis and guiding individualized treatment.
Key Points
• MRI-based deep learning imaging signature (DLIS) stratifies GBM into risk groups with distinct molecular characteristics.
• DLIS is associated with P53, RB, and RTK pathways and del_CDNK2A mutation.
• The prognostic value of DLIS-correlated pathway genes is externally demonstrated.