A few years after it was founded with the aim of taking RNA therapies to the next level, Arnatar Therapeutics Inc. emerged from stealth, disclosing a $52 million series A round raised in 2024 as well as U.S. FDA orphan and rare pediatric disease designations for ART-4, an antisense oligonucleotide candidate targeting the root cause of Alagille syndrome.
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.
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.
Small interfering RNA (siRNA) gained another vote of confidence, albeit back end-loaded, from big pharma as privately held Adarx Pharmaceuticals Inc. signed a deal with Abbvie Inc. related to disease areas that include neuroscience, immunology, and oncology.
Sirius Therapeutics Inc. raised nearly $50 million in a series B2 financing round May 9 to support its pipeline of small interfering RNA (siRNA) molecules for cardiovascular disease indications. SRSD-107, a long-acting Factor XI anticoagulant for thromboembolic disorders, is its lead candidate waiting on EMA clearance to begin a phase II study in Europe.
Sirius Therapeutics Inc. raised nearly $50 million in a series B2 financing round May 9 to support its pipeline of small interfering RNA (siRNA) molecules for cardiovascular disease indications. SRSD-107, a long-acting Factor XI anticoagulant for thromboembolic disorders, is its lead candidate waiting on EMA clearance to begin a phase II study in Europe.
Rona Therapeutics Co. Ltd. has obtained IND clearance from China′s National Medical Products Administration (NMPA) for RN-1871, a small interfering RNA (siRNA) drug targeting angiotensinogen (AGT) for hypertension.
Researchers from Eli Lilly & Co. reported preclinical data on LY-3954068, a MAPT small-interference RNA (siRNA) strategy in AD models. The therapy is designed to reduce tau protein synthesis by inhibiting the translation of MAPT mRNA, with the goal of effectively lowering all forms of tau.
Although CAR T-cell therapies have reached significant clinical success in hematological malignancies, their utility in solid tumors remains limited. One of the main challenges is the scarcity of truly cancer-specific antigens for precise targeting of solid tumors. The use of engineered small, specific antigen-binding domains, such as nanobodies, could be a potential strategy to improve the specificity and efficacy of CAR T cells against solid tumors.
Previous work uncovered the role of the complement system in neuroinflammation and synaptic loss in neurodegenerative disorders such as Alzheimer’s disease (AD). The third component, C3, central in all complement activation pathways, has been proposed as a potential therapeutic target in AD.
