AI allows pre-screening of FGFR3 mutational status using routine histology slides of muscle-invasive bladder cancer

Bannier, Pierre-Antoine and Saillard, Charlie and Mann, Philipp and Touzot, Maxime and Maussion, Charles and Matek, Christian and Kluemper, Niklas and Breyer, Johannes and Wirtz, Ralph and Sikic, Danijel and Schmitz-Draeger, Bernd and Wullich, Bernd and Hartmann, Arndt and Foersch, Sebastian and Eckstein, Markus (2024) AI allows pre-screening of FGFR3 mutational status using routine histology slides of muscle-invasive bladder cancer. NATURE COMMUNICATIONS, 15 (1): 10914. ISSN 2041-1723

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Abstract

Pathogenic activating mutations in the fibroblast growth factor receptor 3 (FGFR3) drive disease maintenance and progression in urothelial cancer. 10-15% of muscle-invasive and metastatic urothelial cancer (MIBC/mUC) are FGFR3-mutant. Selective targeting of FGFR3 hotspot mutations with tyrosine kinase inhibitors (e.g., erdafitinib) is approved for mUC and requires FGFR3 mutational testing. However, current testing assays (polymerase chain reaction or next-generation sequencing) necessitate high tissue quality, have long turnover time, and are expensive. To overcome these limitations, we develop a deep-learning model that detects FGFR3 mutations using routine hematoxylin-eosin slides. Encompassing 1222 cases, our study is a large-scale validation of a model prescreening FGFR3 mutations for MIBC and mUC patients. In this work, we demonstrate that our model achieves high sensitivity (>93%) on advanced and metastatic cases while reducing molecular testing by 40% on average, thereby offering a cost-effective and rapid pre-screening tool for identifying patients eligible for FGFR3 targeted therapies.

Item Type: Article
Uncontrolled Keywords: GROWTH-FACTOR RECEPTOR-3; EXPRESSION
Subjects: 600 Technology > 610 Medical sciences Medicine
Divisions: Medicine > Lehrstuhl für Urologie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 28 Jan 2026 06:03
Last Modified: 28 Jan 2026 06:03
URI: https://pred.uni-regensburg.de/id/eprint/65143

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