Novartis(US:NVS) Globenewswire·2025-10-17 12:00Core Insights - Novartis announced positive results from the five-year analysis of the Phase III NATALEE trial for Kisqali (ribociclib), showing a sustained benefit in reducing the risk of recurrence in high-risk early breast cancer patients [1][2][4] Efficacy Results - The trial demonstrated a 28.4% reduction in the risk of recurrence (HR=0.716; 95% CI 0.618-0.829; nominal p-value <0.0001) for patients treated with Kisqali plus endocrine therapy (ET) compared to ET alone [1] - Five-year invasive disease-free survival (iDFS) rates were 85.5% for the Kisqali plus ET group versus 81.0% for the ET alone group, indicating a 4.5% improvement [2] - A 29.1% risk reduction in distant disease-free survival was also observed [6] Long-term Benefits - The benefits of Kisqali persist beyond the three-year treatment period, providing patients with a greater chance of remaining breast cancer-free [3][4] - Overall survival (OS) showed a trend towards improvement, with a hazard ratio of 0.800, indicating a 20% reduction in the risk of death compared to ET alone [4] Subgroup Analysis - iDFS results across pre-specified subgroups showed consistent benefits: - Stage II: HR 0.660 (3.7% absolute risk reduction) - Stage III: HR 0.730 (5.6% absolute risk reduction) - Node-negative: HR 0.606 (5.7% absolute risk reduction) - Node-positive: HR 0.737 (4.4% absolute risk reduction) [5] Safety Profile - Long-term safety data indicated no new safety signals, with secondary primary malignancies reported at 2.7% for Kisqali plus ET and 3.0% for ET alone [7] Regulatory Status - Kisqali is approved in over 100 countries, including the U.S. and EU, for various indications in HR+/HER2- early and advanced breast cancer [10][11] Clinical Guidelines - Kisqali is recommended as a Category 1 preferred treatment in the NCCN Guidelines for both node-positive and high-risk node-negative early breast cancer [11][12]