As the first – and so far only – drug to enter clinical testing for the rare neurogenetic disorder Alexander disease, there were some unknowns heading into the readout of the pivotal study testing Ionis Pharmaceuticals Inc.’s zilganersen in children and adults. But the top-line data yielded a clear win for the antisense oligonucleotide candidate, which demonstrated a disease-modifying impact, including statistical significance on the primary endpoint of gait speed as assessed by the 10-Meter Walk Test vs. control at week 61.
The U.S. FDA cleared 18 drugs in August, comparable to July’s 17 but down from June’s 23 approvals. That brings the 2025 U.S. total through August to 143, matching 2020 as the second-highest count on record for BioWorldfor the period, after 2024’s high of 159.
Acute pancreatitis took center stage as Wall Street took heed of phase III data from Ionis Pharmaceuticals Inc. with olezarsen for severe hypertriglyceridemia (sHTG), while another player in the space, Arrowhead Pharmaceuticals Inc., signed a sizeable deal in a separate therapeutic area with Novartis AG.
In Ionis Pharmaceuticals Inc.’s second U.S. FDA approval in under a year, the agency approved Dawnzera (donidalorsen) as a prophylactic therapy in the rare and genetic disease hereditary angioedema (HAE). The approval came as scheduled as the NDA had a PDUFA date of Aug. 21. Dawnzera now joins a market with previously approved drugs for the rare, genetic, life-threatening condition, as well as other companies with HAE drugs in development.
Down syndrome (DS) is the most prevalent genetic cause of Alzheimer’s disease (AD). Previous evidence suggests that increased dosage of the amyloid precursor protein (APP) gene plays a crucial role in AD in individuals with Down syndrome (DS-AD), making APP expression a crucial therapeutic target.
The BioWorld Drug Developers Index underperformed both the Nasdaq Biotechnology Index (NBI) and the Dow Jones Industrial Average (DJIA) throughout February and March. However, it showed some recovery by the end of April, finishing the month down 4.67%, slightly worse than the DJIA’s 4.41% decline. The NBI ended April slightly up from both, with a year-to-date drop of 1.16%.
In a deal that could reach nearly $2 billion, Jiangsu Hengrui Pharmaceuticals Co. Ltd. has licensed a small molecule for treating cardiovascular disease to Merck & Co. Inc., dropping the China-based company into a space with lots of competitors in varying stages of development.
Ono Pharmaceutical Co. Ltd. struck a licensing deal with Ionis Pharmaceuticals Inc. for sapablursen, which is in phase II trials for polycythemia vera. Under terms, Osaka, Japan-based Ono gains an exclusive license to develop and commercialize sapablursen worldwide. Carlsbad, Calif.-based Ionis will be responsible for completing the ongoing phase II Imprssion study, while Ono will be responsible for subsequent development, regulatory filings and commercialization.
Ono Pharmaceutical Co. Ltd. struck a licensing deal with Ionis Pharmaceuticals Inc. for sapablursen, which is in phase II trials for polycythemia vera. Under terms, Osaka, Japan-based Ono gains an exclusive license to develop and commercialize sapablursen worldwide. Carlsbad, Calif.-based Ionis will be responsible for completing the ongoing phase II Imprssion study, while Ono will be responsible for subsequent development, regulatory filings and commercialization.
Ionis Pharmaceuticals Inc. CEO Brett Monia predicted that diagnoses of familial chylomicronemia syndrome (FCS) will “accelerate fairly quickly” now that the firm has gained U.S. FDA clearance for Tryngolza (olezarsen) as an adjunct to diet to reduce triglycerides in adults with the rare form of severe hypertriglyceridemia (sHTG) that can lead to life-threatening acute pancreatitis (AP).
