RT Journal Article SR Electronic T1 Prediction of futile recanalisation after endovascular treatment in acute ischaemic stroke: development and validation of a hybrid machine learning model JF Stroke and Vascular Neurology JO Stroke Vasc Neurol FD BMJ Publishing Group Ltd SP 631 OP 639 DO 10.1136/svn-2023-002500 VO 9 IS 6 A1 Nie, Ximing A1 Yang, Jinxu A1 Li, Xinxin A1 Zhan, Tianming A1 Liu, Dongdong A1 Yan, Hongyi A1 Wei, Yufei A1 Liu, Xiran A1 Chen, Jiaping A1 Gong, Guoyang A1 Wu, Zhenzhou A1 Yang, Zhonghua A1 Wen, Miao A1 Gu, Weibin A1 Pan, Yuesong A1 Jiang, Yong A1 Meng, Xia A1 Liu, Tao A1 Cheng, Jian A1 Li, Zixiao A1 Miao, Zhongrong A1 Liu, Liping YR 2024 UL http://svn.bmj.com/content/9/6/631.abstract AB Background Identification of futile recanalisation following endovascular therapy (EVT) in patients with acute ischaemic stroke is both crucial and challenging. Here, we present a novel risk stratification system based on hybrid machine learning method for predicting futile recanalisation.Methods Hybrid machine learning models were developed to address six clinical scenarios within the EVT and perioperative management workflow. These models were trained on a prospective database using hybrid feature selection technique to predict futile recanalisation following EVT. The optimal model was validated and compared with existing models and scoring systems in a multicentre prospective cohort to develop a hybrid machine learning-based risk stratification system for futile recanalisation prediction.Results Using a hybrid feature selection approach, we trained and tested multiple classifiers on two independent patient cohorts (n=1122) to develop a hybrid machine learning-based prediction model. The model demonstrated superior discriminative ability compared with other models and scoring systems (area under the curve=0.80, 95% CI 0.73 to 0.87) and was transformed into a web application (RESCUE-FR Index) that provides a risk stratification system for individual prediction (accessible online at fr-index.biomind.cn/RESCUE-FR/).Conclusions The proposed hybrid machine learning approach could be used as an individualised risk prediction model to facilitate adherence to clinical practice guidelines and shared decision-making for optimal candidate selection and prognosis assessment in patients undergoing EVT.Data are available on reasonable request.