Ionis Pharmaceuticals announces pivotal Phase 3 trial design for ION582

Ionis Pharmaceuticals (IONS) announced the pivotal Phase 3 study design following successful alignment with the U.S. FDA on ION582, an investigational medicine for the treatment of people living with Angelman syndrome. AS typically presents in infancy and is characterized by profound intellectual disability, impaired verbal abilities and severe motor impairment. “Following positive results for ION582 in the Phase 2 HALOS trial, we are pleased to have alignment with the FDA on the design of our Phase 3 REVEAL trial, which will address clinical endpoints that reflect the most pressing and meaningful outcomes for people living with AS and their caregivers,” said Brett Monia, Ph.D., chief executive officer of Ionis. “We will enroll a broad group of individuals living with AS in the global pivotal Phase 3 trial, planned to begin in the first half of 2025. We look forward to working with the community to advance a potential new treatment targeting the underlying cause of disease in this debilitating neurological condition that has no approved medicines.”