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    Patients with HR+, HER2- metastatic breast cancer whose disease progressed on endocrine therapy (ET) and a CDK4/6 inhibitor have better progression-free survival if they switch ET and receive ribociclib than if they switch ET alone, a phase 2 study suggests.

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    • Patients with HR-positive, HER2-negative metastatic #breastcancer whose disease progressed on endocrine therapy and a CDK4/6 inhibitor have better PFS if they switch ET and receive ribociclib than if they switch ET alone. Published in @JCO_ASCO. https://t.co/xRfRqTKok0 #BCSM