Mindful of the coming approval of abemaciclib, how would you decide between a CDK 4/6 inhibitor in either the first or second-line setting in HR-positive, HER2-negative postmenopausal metastatic breast CA?
Would you prefer first-line AI/CDK 4/6 inhibitor, or first-line AI followed by 2nd-line fulvestrant/CDK 4/6 inhibitor (either abemaciclib, once available, or palbociclib)?
Answer from: Medical Oncologist at Community Practice
Side effect profile is generally a good starting point since there is no head to head comparison (not will there likely be).
Abemaciclib does have a higher incidence of diarrhea but also a lower incidence of neutropenia. It also has the advantage of daily dosing which can be less confusing fo...