Longboard Pharmaceuticals reported interim results from its 52-week open-label extension of the Phase II PACIFIC Study, showing a median 57.7% decrease in countable motor seizure frequency across 40 participants with developmental and epileptic encephalopathies (DEEs). The study assessed bexicaserin's safety, tolerability, and impact on seizure frequency, with consistent results regardless of initial treatment. A high retention rate of 92.7% was noted, and the company plans to provide a full analysis with 12-month data next year.