Lilly presents positive primary outcome data from monarchE trial that builds on previous definitive analysis for Verzenio + endocrine therapy

Eli Lilly and Company announced additional data from a pre-planned primary outcome analysis from the Phase III monarchE trial that showed Verzenio (abemaciclib) in combination with standard adjuvant endocrine therapy (ET) decreased the risk of breast cancer recurrence by 28.7 percent compared to standard adjuvant ET alone for people with hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) high risk early breast cancer (HR: 0.713; 95% CI: 0.583, 0.871; p = 0.0009). This statistically significant improvement corresponds to a three percent difference in the two-year rate of invasive disease-free survival (IDFS) between arms (92.3 percent in the Verzenio arm and 89.3 percent in the control arm). The data presented during the 2020 Virtual San Antonio Breast Cancer Symposium (SABCS) included an additional 3.6 months of follow-up since the pre-planned interim analysis results announced in September 2020, and more than 1,400 patients have completed two years of treatment since the start of the study. The timing of the primary outcome analysis was driven by the number of IDFS events observed in the intent-to-treat population across both arms as prespecified in the study's statistical analysis plan. The statistically significant benefit observed was consistent across all pre-specified subgroups. The median follow up was approximately 19.1 months. The addition of Verzenio to ET also resulted in an improvement in distant relapse-free survival (DRFS), or time to developing breast cancer that has spread to other parts of the body. The combination reduced the risk of developing metastatic disease by 31.3 percent compared to 28.3 percent at interim analysis (HR: 0.687; 95% CI: 0.551, 0.858). Safety data from monarchE were consistent with the known safety profile of Verzenio and no new safety signals were observed. Compared to the interim analysis results, there were minimal increases in adverse events.