Latest News

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 (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 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)....
CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) announced today that the U.S. Food and Drug Administration (FDA) has granted Fast Track designation to Ionis and AstraZeneca’s eplontersen, an investigational therapy for the treatment of transthyretin-mediated amyloid cardiomyopathy (ATTR-CM) in adults. The FDA grants development programs Fast Track designation to facilitate...
CARLSBAD, Calif. –  Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced new long-term data for DAWNZERA™ (donidalorsen), the first and only RNA-targeted prophylactic medicine for hereditary angioedema (HAE), to be presented at the 2025 American College of Allergy, Asthma & Immunology (ACAAI) Annual Scientific Meeting in Orlando, Florida. Results demonstrate the long-term durability and safety...
CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc.(Nasdaq: IONS) today announced full results from the Phase 3 Balance study of Ionis’ lead independent investigational medicine, olezarsen, for the treatment of adults with familial chylomicronemia syndrome (FCS). The olezarsen 80 mg monthly dose met the primary endpoint of significantly reducing triglycerides (TGs) in...
CARLSBAD, Calif. — Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) today announced positive results from an ongoing Phase 2 open-label extension (OLE) study evaluating the safety and efficacy of its investigational prophylactic medicine, donidalorsen, in patients with hereditary angioedema (HAE), a rare and life-threatening genetic disease. Over the two years, patients treated...