Interim analysis of the long‐term efficacy and safety of azetukalner in an ongoing open‐label extension study following a phase 2b clinical trial (X‐<scp>TOLE</scp>) in adults with focal epilepsy

This long-term study assessed the safety and efficacy of azetukalner to treat focal seizures. Patients taking azetukalner daily with food for about 2 years had far fewer focal seizures with azetukalner than before taking the medication. For those who had been treated for 24 months, about a third were seizure-free for a consecutive 6-month period, and about a quarter were seizure-free for a consecutive 12-month period. Most side effects were mild or moderate, and these included dizziness, headache, and somnolence (sleepiness).