Summary: This phase II trial tests the accuracy of functional imaging (FFNP)-positron emission tomography (PET)/computed tomography (CT) to predict response to abemaciclib plus endocrine therapy. Abemaciclib is a drug used to treat certain types of hormone receptor positive (HR+), HER2 negative breast cancer. Abemaciclib blocks certain proteins, which may help keep tumor cells from growing. Endocrine thera...

Summary: The goal of this observational study is to evaluate how persistently patients with high-risk early breast cancer take abemaciclib 6 months after therapy start. To this end, researchers will perform a retrospective analysis of therapy data.

Summary: This non-interventional study (NIS) aims to evaluate effectiveness, persistence, treatment patterns, adverse events (AEs), and patient-reported experience (including adherence, treatment satisfaction, health-related quality of life \[HRQoL\], work productivity, and etc.), among HR+/HER2- stage II and III eBC patients treated with ribociclib + ET, and to evaluate AEs and patients-reported experienc...