使用hiPSC-CM MEA数据进行心脏安全评估的堆叠集团机器学习.
Muhammad Adnan Pramudito1, Yunendah Nur Fuadah2, Yoo Seok Kim3
1Computational Medicine Lab, Department of IT Convergence Engineering, Kumoh National Institute of Technology, Gumi, 39177, Republic of Korea.
Annals of biomedical engineering
|January 26, 2026
概括
一个新的堆叠组合模型使用hiPSC-CM试验的简单电生理学数据准确预测Torsades de Pointes (TdP) 风险,改进了药物安全性测试的单模型方法.
科学领域:
- 心血管药理学心血管药理学
- 计算毒理学计算毒理学
- 干细胞生物学 干细胞生物学
背景情况:
- 通过诱导多能干干细胞衍生心肌细胞 (hiPSC-CM) 试验预测药物诱导的Torsades de Pointes (TdP) 风险具有挑战性.
- 现有的模型经常与非线性模式和药物特定的性能不稳定性作斗争.
研究的目的:
- 评估一个堆叠组合模型是否可以提高TdP风险预测的稳定性.
- 为了评估使用两个简单的P-derived预测器的有效性.
主要方法:
- 从基于MEA的FPDc测量中推导出两个电生理学预测指标 (
最大变化和插入的Δ F P D c 在Cmax).Δ F P D c - 使用随机森林 (RF),XGB和人工神经网络 (ANN) 训练了一种堆叠模型.
- 在使用AUC,概率比率,对准确度和分类错误对16种未见的CiPA参考化合物的性能进行了评估,通过类权重解决了类不平衡.
主要成果:
- 堆叠组合始终优于个别分类器.
- 基于XGB的元分类器实现了完美的区分 (AUC = 1.000) 和对准确性 (1.000).
- 在所有评估中,分类错误保持在0.125以下.
结论:
- 堆叠架构与简单的MEA衍生特征相结合,为早期TdP风险评估提供了更可靠的框架.
- 未来的工作应该包括外部验证和可解释的建模用于翻译应用.
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