Real-world outcomes with palbociclib, ribociclib, and abemaciclib plus endocrine therapy in HR+/HER2- advanced breast cancer: A multicenter retrospective study
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Background: Cyclin-dependent kinase 4/6 inhibitors (CDK4/6i) combined with endocrine therapy (ET) are the standard first- and second-line treatments for hormone receptor-positive (HR+), HER2-negative (HER2-) advanced breast cance... ...