Xenon to Present New Azetukalner OLE Study Data in Epilepsy at AES 2025

Core Insights - Xenon Pharmaceuticals Inc. is set to present multiple research findings at the American Epilepsy Society Annual Meeting (AES 2025) from December 5-9, 2025, focusing on their lead molecule azetukalner for epilepsy treatment [1][5][9] - The presentations will include long-term data from the X-TOLE open-label extension study, which supports the potential for extended seizure freedom with azetukalner [1][5][6] - Additional findings will address the impact of depression on epilepsy patients and new pre-clinical data from the NaV1.1 program targeting Dravet syndrome [1][5][9] Presentation Details - Seven posters will be presented, including: - Long-term safety and efficacy data of azetukalner in adults with focal epilepsy, with a ≥48-month interim analysis from the ongoing 7-year X-TOLE study [6] - Characterization of long-term seizure freedom in the ongoing open-label extension of X-TOLE [6] - Studies on depression symptoms among epilepsy patients and their impact on treatment outcomes [6][5] - A symposium titled "Exploring Depression and Anxiety in Epilepsy" will be held in partnership with the Epilepsy Foundation of America [5] Company Overview - Xenon Pharmaceuticals is a neuroscience-focused biopharmaceutical company dedicated to drug discovery and development of therapeutics for epilepsy and other neurological disorders [9] - The company's lead molecule, azetukalner, is a selective KV7 potassium channel opener currently in Phase 3 clinical trials for epilepsy, major depressive disorder, and bipolar depression [9] - Xenon is also advancing early-stage programs targeting potassium and sodium channels for potential pain treatment [9]