HER2-targeted antibody–drug conjugates are rapidly transforming the treatment landscape of urothelial carcinoma, with recent clinical trials positioning HER2-directed therapy as a new therapeutic pillar. Yet, this therapeutic acceleration has exposed a fundamental challenge: HER2-targeted drugs are advancing swiftly into early disease settings, but the field still lacks a coherent definition of what ‘HER2-positive’ means in urothelial cancer.
- Emanuele Crupi
- Filippo Pederzoli
- Daniele Raggi