Roche Holding AG has announced that it has received CE IVDR approval for two label expansions of its VENTANA® HER2 (4B5) Rabbit Monoclonal Primary Antibody RxDx* assay. This test is now approved to assist in the identification of metastatic breast cancer patients with HER2-ultralow status, making them potentially eligible for treatment with ENHERTU® (trastuzumab deruxtecan), a HER2-directed antibody drug conjugate developed by Daiichi Sankyo and AstraZeneca. Additionally, the test is approved for identifying patients with previously-treated, unresectable or metastatic HER2-positive biliary tract cancer who may be eligible for treatment with ZIIHERA® (zanidatamab-hrii) by Jazz Pharmaceuticals. Roche's expanded approval aims to enhance personalized treatment options for patients facing challenging cancers.