First patient dosed in pivotal Phase 3 REVEAL clinical study of ION582 in Angelman syndrome

CARLSBAD, Calif.--(BUSINESS WIRE)--Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that the first participant has been dosed in the global Phase 3 REVEAL study, which is designed to evaluate the efficacy and safety of ION582, an investigational medicine for the treatment of people living with Angelman syndrome (AS), a serious and rare neurodevelopmental disorder that leads to significant physical and cognitive impairments. “Dosing the first person with Angelman syndrome in our pivota