Xenon(XENE) - 2023 Q4 - Annual Results

Exhibit 99.1 NEWS RELEASE Xenon Pharmaceuticals Reports Fourth Quarter and Full Year 2023 Financial Results and Provides Corporate Update XEN1101 Phase 3 epilepsy program continues to progress with X-TOLE2 and X-TOLE3 in focal onset seizures and X-ACKT in primary generalized tonic-clonic seizures; completion of patient enrollment in X-TOLE2 expected in late 2024 to early 2025 Planned "end-of-Phase 2" meeting with the FDA in April to support the initiation of XEN1101 Phase 3 program in major depressive disor ...