Findings With Abemaciclib Plus Tamoxifen in Advanced Breast Cancer

Erika P. Hamilton, MD, discusses the results from a phase II study of abemaciclib plus tamoxifen versus abemaciclib monotherapy in patients with HR-positive, HER2-negative advanced breast cancer.

Erika P. Hamilton, MD, director of the breast and gynecologic research program at Sarah Cannon Research Institute, discusses the results from a phase II study of abemaciclib (Verzenio) plus tamoxifen versus abemaciclib monotherapy in patients with HR-positive, HER2-negative advanced breast cancer.

The progression-free survival (PFS) range was 6.5 months to 9.1 months in this study and was not statistically significant across arms. Hamilton says the single-agent abemaciclib had equal activity in regard to PFS. Hamilton also noted the arm receiving 200 mg of abemaciclib had a response rate of 29% compared to 19% in the previous MONARCH trial.