1. UL is a 73-year-old woman, with a performance status of 0, presenting with a 2.5-cm lump in her left breast. Further examination reveals an additional 1 cm liver lesion. What is the preferred initial therapy for UL?

2. Which of the following statements is TRUE about the PALOMA-3 trial (palbociclib vs placebo, plus fulvestrant, in women with HR+, HER2- advanced breast cancer, whose disease had progressed within 12 months of prior endocrine therapy)?

3. In clinical trials, which CDK4/6 inhibitor had the LOWEST incidence of neutropenia when administered with an aromatase inhibitor?

4. Which adverse event is much more common with abemaciclib than with ribociclib and palbociclib when administered with an aromatase inhibitor?

5. GF is a 71-year-old woman who was recently diagnosed with metastatic HR+, HER2- breast cancer. She received doxorubicin in the adjuvant setting and has left ventricular symptoms and an elongated QT interval. Which CDK4/6 inhibitors would be the LEAST appropriate for her?

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