可解释的人工智能用于预测转移性癌症的死亡风险:使用纪念斯隆凯特林-转移性数据集进行回顾性队列研究
Polycarp Nalela1, Deepthi Rao1, Praveen Rao1
1The University of Missouri, Columbia, MO, United States.
JMIR cancer
|January 13, 2026
概括
可解释的机器学习模型可以准确地预测转移性癌症患者的生存率,识别转移部位数和瘤突变负担等关键预后因素,以改善风险分层.
科学领域:
- 计算生物学和生物信息学
- 瘤学和癌症研究.
- 机器学习和人工智能机器学习
背景情况:
- 转移性癌症是癌症死亡的主要原因,由于临床异质性和复杂的分子特征,生存预测有限.
- 机器学习 (ML) 提供了一种强大的方法来整合多样化的患者和瘤数据,以提高风险分层和精确瘤学.
- 现实世界的数据和先进的ML技术对于开发瘤学中可解释的预测模型至关重要.
研究的目的:
- 开发和解释ML模型,以使用MSK-MET数据集预测转移性癌症患者的整体存活率.
- 通过可解释的人工智能 (AI) 技术识别转移性癌症的关键预后生物标志物.
- 利用ML来改善患者咨询,治疗计划和精确瘤学工作流程.
主要方法:
- 在27种瘤类型中对纪念斯隆·凯特林-转移性 (MSK-MET) 队列 (n=20,338) 的回顾性分析.
- 训练了五个ML分类器 (XGBoost,逻辑回归,随机森林,决策树,天真贝叶斯) 使用分层数据和交叉验证.
- 评估模型性能使用准确度,AUC,精度,回忆,F1分数;使用SHAP进行解释性和XGBoost-Cox进行时间到事件预测.
主要成果:
- 与其他分类器相比,极端梯度增强 (XGBoost) 显示出更高的性能 (精度=0.74,AUC=0.82).
- 在生存分析中,XGBoost-Cox模型 (C指数=0.70) 的表现优于传统的Cox模型 (C指数=0.66).
- SHAP和Cox模型确定了转移部位数,瘤突变负担和远程肝/骨转移作为强有力的预后因素.
结论:
- 可解释的ML模型,特别是XGBoost与SHAP,有效预测转移性癌症的生存率,并突出显示临床上有意义的特征.
- 这些ML工具可以帮助患者咨询,治疗计划和整合到精确瘤学中.
- 未来的研究应该侧重于外部验证,电子病历整合和前性临床评估.
相关概念视频
Actuarial Approach
The actuarial approach, a statistical method originally developed for life insurance risk assessment, is widely used to calculate survival rates in clinical and population studies. This method accounts for participants lost to follow-up or those who die from causes unrelated to the study, ensuring a more accurate representation of survival probabilities.
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...
Kaplan-Meier Approach
The Kaplan-Meier estimator is a non-parametric method used to estimate the survival function from time-to-event data. In medical research, it is frequently employed to measure the proportion of patients surviving for a certain period after treatment. This estimator is fundamental in analyzing time-to-event data, making it indispensable in clinical trials, epidemiological studies, and reliability engineering. By estimating survival probabilities, researchers can evaluate treatment effectiveness,...
Comparing the Survival Analysis of Two or More Groups
Survival analysis is a cornerstone of medical research, used to evaluate the time until an event of interest occurs, such as death, disease recurrence, or recovery. Unlike standard statistical methods, survival analysis is particularly adept at handling censored data—instances where the event has not occurred for some participants by the end of the study or remains unobserved. To address these unique challenges, specialized techniques like the Kaplan-Meier estimator, log-rank test, and Cox...
Cancer Survival Analysis
Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...


