Roche receives FDA approval for first diagnostic tests to identify HER2-positive metastatic breast cancer patients eligible for ENHERTU

TUCSON, Ariz., Dec. 15, 2025 /PRNewswire/ -- Roche (SIX: RO, ROG; OTCQX: RHHBY) announced today that the U.S. Food and Drug Administration (FDA) has approved additional indications for its PATHWAY anti-HER2/neu (4B5) Rabbit Monoclonal Primary Antibody and VENTANA HER2 Dual ISH DNA Probe Cocktail tests. These tests are now approved to aid in identifying HER2-positive metastatic breast cancer (mBC) patients who may be eligible for treatment with ENHERTU^® (trastuzumab deruxtecan), a specifically engineered HER2-directed antibody drug conjugate (ADC) discovered by Daiichi Sankyo and being jointly developed and commercialised by Daiichi Sankyo and AstraZeneca.