FibroGen Initiates Phase 2 Monotherapy Trial of FG-3246, a First-in-Class CD46 Targeting ADC, in Metastatic Castration-Resistant Prostate Cancer

SAN FRANCISCO, Sept. 24, 2025 (GLOBE NEWSWIRE) -- FibroGen, Inc. (NASDAQ: FGEN) today announced the initiation of the Phase 2 monotherapy, dose-optimization trial of FG-3246, a potential first-in-class antibody-drug conjugate (ADC) targeting CD46-expressing cancer lesions in patients with metastatic castration-resistant prostate cancer (mCRPC). The trial will also assess the diagnostic and predictive performance of FG-3180, a companion PET imaging agent, which shares the same CD46-targeted antibody used in FG-3246. The ability of FG-3180 to identify mCRPC lesions and predict response to FG-3246 will be evaluated.

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