DyVarMap:整合合规动力学和可解释的机器学习,用于FGFR2中的癌症相关误解变异分类
Yiyang Lian1, Amarda Shehu1,2
1School of Systems Biology, George Mason University, Manassas, VA 20110, USA.
Bioengineering (Basel, Switzerland)
|January 28, 2026
概括
在癌症中解释基因变异是具有挑战性的. 一个新的框架DyVarMap使用结构动态来预测变异效应,为精确瘤学提供机械洞察力.
科学领域:
- 计算生物学是一种计算生物学.
- 结构生物信息学 结构生物信息学
- 精确瘤学是一门精确的专业.
背景情况:
- 解释癌症基因中的误解变异是困难的,许多被归类为不确定的意义 (VUS) 的变异.
- 像FGFR2这样的受体氨酸激酶的功能取决于结构动力学,使变异分析复杂化.
- 现有的基于序列的预测器往往缺乏对变异效应的机制解释.
研究的目的:
- 开发DyVarMap,一个可解释的结构学习框架,用于预测癌症相关基因变异的致病性.
- 整合形态动力学到变量效应预测中,以提高准确性和机理性理解.
- 提供可测试的假设,用于精密瘤学的实验验证.
主要方法:
- DyVarMap集成了基于AlphaFold2的集合生成与物理驱动的精细化和多重学习.
- 监督分类模型使用了五个生物物理动机的几何特征.
- SHAP分析为变异性病原性预测提供了机制性归因.
主要成果:
- DyVarMap成功地对FGFR2变异的病原性进行了分类,产生了多样化的形状组合,并确定了转移稳定的状态.
- 与PolyPhen-2和AlphaMissense相比,对十种酶域变体的外部验证实现了0.77的AUROC,校准优越.
- 特性重要性分析强调了K659-E565盐桥距离和DFG图案二面角作为关键预测因素,将预测与已知的激活机制联系起来.
结论:
- DyVarMap有效地弥合了静态结构预测和动态意识的功能评估之间的差距.
- 该框架为变异效应提供了结构连贯的机制解释,有助于精确瘤学.
- 将结构动力学纳入变异效应预测中,为临床应用和实验验证提供了重要的价值.
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