Efficacy and safety profiles of CDK4/6 inhibitor in patients with hormone receptor-positive and human epidermal growth factor receptor 2-negative (HR+/HER2-) advanced breast cancer (ABC) from the high-altitude versus low-altitude regions: a multi-center retrospective study
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Background: CDK4/6 inhibitors (CDK4/6i) represent the standard treatment for HR+/HER2- ABC. The study assessed the efficacy and safety profiles of CDK4/6i from first-line (1 L) to third-line (3 L) in patients with HR+/HER2- ABC f... ...
