Mabwell Bioscience Co. Ltd. and Aditum Bio Management Co. LLC announced, in after-market hours Sept. 17, an agreement to forge a new company called Kalexo Bio Inc. and load the biotech with a preclinical dyslipidemia asset via a potential $1 billion global license deal.

Mabwell Bioscience Co. Ltd. and Aditum Bio Management Co. LLC announced, in after-market hours Sept. 17, an agreement to forge a new company called Kalexo Bio Inc. and load the biotech with a preclinical dyslipidemia asset via a potential $1 billion global license deal.

Arrowhead Pharmaceuticals Inc. has filed a request for regulatory clearance in New Zealand to initiate a phase I/IIa trial of ARO-MAPT, the company’s investigational RNA interference (RNAi) therapeutic being developed as a potential treatment for tauopathies, including Alzheimer’s disease.

Argo Biopharmaceutical Co. Ltd. and its RNAi work drew Novartis AG back to the table for a third time, as the companies entered a potential $5.2 billion deal involving cardiovascular-focused assets, including a right to first negotiation for BW-00112, an angiopoietin-like protein 3-targeting siRNA in phase II testing in severe hypertriglyceridemia.

Argo Biopharmaceutical Co. Ltd. and its RNAi work drew Novartis AG back to the table for a third time, as the companies entered a potential $5.2 billion deal involving cardiovascular-focused assets, including a right to first negotiation for BW-00112, an angiopoietin-like protein 3-targeting siRNA in phase II testing in severe hypertriglyceridemia.

Arrowhead Pharmaceuticals Inc. has announced a global licensing and collaboration agreement with Novartis AG for ARO-SNCA, Arrowhead’s preclinical stage siRNA therapy for the treatment of synucleinopathies such as Parkinson’s disease, and for additional targets.

Partly focused on delivery challenges that have limited the reach of RNA medicines, new biotech company Axelyf Inc. closed a $2.6 million seed round to support development of its AXL technology and to advance lead autoimmune candidate AXL-003.

Amid the increasingly competitive myasthenia gravis drug development space, siRNA candidate cemdisiran met phase III endpoints, with the monotherapy showing numerically higher results than a combination product. Regeneron Pharmaceuticals Inc., which has a worldwide license to cemdisiran from Alnylam Pharmaceuticals Inc., plans to file for U.S. approval in generalized myasthenia gravis, a rare and chronic autoimmune disease leading to life-threatening muscle weakness, in the first quarter of 2026.

Partly focused on delivery challenges that have limited the reach of RNA medicines, new biotech company Axelyf Inc. closed a $2.6 million seed round to support development of its AXL technology and to advance lead autoimmune candidate AXL-003.

In Parkinson’s disease, α-synuclein accumulates in neurons and may thereby contribute to their degeneration. Reducing expression of α-synuclein may be an effective therapy, but delivering short interfering RNA (siRNA) to the brain noninvasively is notoriously ineffective, in part because siRNA does not pass the blood-brain barrier efficiently.