The Effect of Abemaciclib Plus Fulvestrant on Overall Survival in Hormone Receptor-Positive, ERBB2-Negative Breast Cancer That Progressed on Endocrine Therapy-MONARCH 2: A Randomized Clinical Trial.

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Medical Oncology · Mayo Clinic

Whereas ER 1-9% represents a heterogeneous group of tumors with relatively poor response to endocrine monotherapy, there are few if any data on whether this group of patients should be excluded from the use of CDK 4/6 inhibitors. For example, Finn et al. demonstrated that in the PALOMA-2 study, ER H...