Would you consider a CDK 4/6 inhibitor in combination with endocrine therapy for a patient with ER low (1-9%) metastatic breast cancer?
In which situations would you consider this a reasonable treatment option?
Answer from: Medical Oncologist at Academic Institution
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...
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