CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced additional positive results from the pivotal study of zilganersen in children and adults living with Alexander disease (AxD), a rare, progressive and often fatal neurological condition with no approved disease-modifying treatments. These findings, which will be presented today at the 2026 American...
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CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced positive topline data from the HALOS Phase 1/2a open-label study of ION582 in Angelman syndrome. ION582 was safe and well tolerated in the study and showed encouraging and consistent benefits in individuals living with Angelman syndrome, with the most robust improvements observed...
CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced positive topline results from the pivotal study of zilganersen in children and adults living with Alexander disease (AxD), a rare, progressive and often fatal neurological condition with no approved disease-modifying treatments. Zilganersen 50 mg demonstrated statistically significant and clinically meaningful stabilization...
CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that the U.S. Food and Drug Administration (FDA) has accepted for Priority Review the New Drug Application (NDA) for zilganersen, an investigational RNA-targeted medicine for Alexander disease (AxD), a rare, progressive and often fatal neurological condition. The FDA has set a Prescription Drug User Fee...
CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that it has completed enrollment in the pivotal cohort (Cohort 1) of the global Phase 3 REVEAL study evaluating obudanersen (ION582), an investigational RNA-targeted medicine for people living with Angelman syndrome (AS), a serious and rare neurodevelopmental disorder associated with significant...
CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced that the first participant has been dosed in the Phase 1-2 ASCEND study of ION337, an investigational RNA-targeted medicine for people living with Dravet syndrome, a rare, severe and lifelong neurological disorder. Dravet syndrome typically begins in infancy and is associated...
CARLSBAD, Calif. – Ionis Pharmaceuticals (NASDAQ: IONS) today announced that the company has launched a new grant program that provides funding to U.S.-based researchers whose work advances the understanding of transthyretin amyloidosis (ATTR), facilitates early diagnosis and enhances disease management of patients living with ATTR amyloidosis. The Janice Wiesman Young...
CARLSBAD, Calif. – Ionis Pharmaceuticals, Inc. (NASDAQ: IONS), the leader in RNA-targeted therapies, announced today initiation of OASIS-HAE, the registrational study in the donidalorsen (formerly IONIS-PKK-LRx) Phase 3 clinical program. Donidalorsen is an investigational antisense medicine designed to reduce the production of prekallikrein, which plays a key role in the activation...
CARLSBAD, Calif. – Ionis Pharmaceuticals, Inc. (NASDAQ: IONS) announced the initiation of a Phase 3 clinical trial of ION363 in patients with amyotrophic lateral sclerosis (ALS) with mutations in the fused in sarcoma gene (FUS). Patients with a mutation in the FUS gene develop a rare form of ALS, referred...
CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) announced today that the U.S. Food and Drug Administration (FDA) has granted Orphan Drug designation to the investigational medicine olezarsen for the treatment of familial chylomicronemia syndrome (FCS), a rare, genetic disease characterized by extremely elevated triglyceride levels and recurrent acute pancreatitis (AP)....