英国利兹大学Jakob Nikolas Kather小组利用群体学习实现肿瘤组织病理中的去中心化人工智能。这一研究成果与2022年4月25日在线发表在国际学术期刊《自然—医学》上。

Author: Saldanha, Oliver Lester, Quirke, Philip, West, Nicholas P., James, Jacqueline A., Loughrey, Maurice B., Grabsch, Heike I., Salto-Tellez, Manuel, Alwers, Elizabeth, Cifci, Didem, Ghaffari Laleh, Narmin, Seibel, Tobias, Gray, Richard, Hutchins, Gordon G. A., Brenner, Hermann, van Treeck, Marko, Yuan, Tanwei, Brinker, Titus J., Chang-Claude, Jenny, Khader, Firas, Schuppert, Andreas, Luedde, Tom, Trautwein, Christian, Muti, Hannah Sophie, Foersch, Sebastian, Hoffmeister, Michael, Truhn, Daniel, Kather, Jakob Nikolas

Issue&Volume: 2022-04-25

Abstract: Artificial intelligence (AI) can predict the presence of molecular alterations directly from routine histopathology slides. However, training robust AI systems requires large datasets for which data collection faces practical, ethical and legal obstacles. These obstacles could be overcome with swarm learning (SL), in which partners jointly train AI models while avoiding data transfer and monopolistic data governance. Here, we demonstrate the successful use of SL in large, multicentric datasets of gigapixel histopathology images from over 5,000 patients. We show that AI models trained using SL can predict BRAF mutational status and microsatellite instability directly from hematoxylin and eosin (H&E)-stained pathology slides of colorectal cancer. We trained AI models on three patient cohorts from Northern Ireland, Germany and the United States, and validated the prediction performance in two independent datasets from the United Kingdom. Our data show that SL-trained AI models outperform most locally trained models, and perform on par with models that are trained on the merged datasets. In addition, we show that SL-based AI models are data efficient. In the future, SL can be used to train distributed AI models for any histopathology image analysis task, eliminating the need for data transfer. A decentralized, privacy-preserving machine learning framework used to train a clinically relevant AI system identifies actionable molecular alterations in patients with colorectal cancer by use of routine histopathology slides collected in real-world settings.

DOI: 10.1038/s41591-022-01768-5

Source: https://www.nature.com/articles/s41591-022-01768-5