arXiv:2501.15881cs.LG2025-01被引 14

用自编码器和特征选择,找出卵巢癌耐药与敏感的关键临床基因标志物。

Multivariate Feature Selection and Autoencoder Embeddings of Ovarian Cancer Clinical and Genetic Data

  • 用自编码器将数据压缩到三维空间,检测耐药与敏感组的内在区分性。
  • 结合临床与基因数据后,分组分离效果更明显,经微调后提升显著。
  • 发现手术类型、新辅助化疗及特定基因突变是关键预测因子,适合精准医疗研究者。

本研究采用数据驱动方法探索卵巢癌(OC)中的新型临床与遗传标志物。首先,利用自编码器对卵巢癌数据集进行非线性分析,将数据压缩至三维潜在空间,以检测铂类敏感与耐药组之间的内在可分性;其次,改进信息变量识别(IVI)方法,筛选出对疾病进展最具相关性的特征(临床或遗传)。结果显示,使用临床特征及临床与遗传特征组合时,分离模式更清晰,经过监督微调后效果显著提升;而仅使用遗传数据时,分离性较弱,但监督学习使其更加明显。基于IVI的特征选择识别出关键临床变量(如手术方式、新辅助化疗)及部分基因突变具有强相关性,同时发现低风险遗传因素也具重要价值。研究证实,结合自编码器与特征选择方法可深入揭示卵巢癌进展机制,为整合临床与基因指标的新生物标志物发现提供支持,有助于优化患者分层与个性化治疗策略。

原文摘要 · Abstract (English)

This study explores a data-driven approach to discovering novel clinical and genetic markers in ovarian cancer (OC). Two main analyses were performed: (1) a nonlinear examination of an OC dataset using autoencoders, which compress data into a 3-dimensional latent space to detect potential intrinsic separability between platinum-sensitive and platinum-resistant groups; and (2) an adaptation of the informative variable identifier (IVI) to determine which features (clinical or genetic) are most relevant to disease progression. In the autoencoder analysis, a clearer pattern emerged when using clinical features and the combination of clinical and genetic data, indicating that disease progression groups can be distinguished more effectively after supervised fine tuning. For genetic data alone, this separability was less apparent but became more pronounced with a supervised approach. Using the IVI-based feature selection, key clinical variables (such as type of surgery and neoadjuvant chemotherapy) and certain gene mutations showed strong relevance, along with low-risk genetic factors. These findings highlight the strength of combining machine learning tools (autoencoders) with feature selection methods (IVI) to gain insights into ovarian cancer progression. They also underscore the potential for identifying new biomarkers that integrate clinical and genomic indicators, ultimately contributing to improved patient stratification and personalized treatment strategies.

卵巢癌特征选择自编码器生物标志物

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