China Post Securities·2026-02-27 03:06Investment Rating - The industry investment rating is "Strong Outperform" and is maintained [1] Core Insights - siRNA drugs have significant mechanism advantages, with delivery as the core technology. Compared to traditional small molecules and biologics, siRNA drugs can precisely silence pathogenic proteins, degrade effectively, and have a long duration of action, making them a popular direction for new drug development. The core technology focuses on modification and delivery, with liver-external delivery being the current breakthrough focus [2][12] - Overseas giants are entering a harvest period, awaiting proof of concept (POC) for liver-external delivery. Alnylam's GalNAc liver-internal delivery has become the "standard answer" due to its high delivery efficiency and specificity. Other companies like Arrowhead and Dicerna are advancing in clinical stages or commercialization for cardiovascular targets, while liver-external organ targets are still in early development [3][41] - Domestic siRNA drug development is flourishing, with various directions from startups and major pharmaceutical companies. Domestic firms are becoming significant players in the global siRNA arena, with strong business development (BD) willingness from multinational corporations (MNCs) in the liver delivery space. New directions include dual-target and liver-external delivery, narrowing the gap with overseas competitors and potentially leading the industry [4] Summary by Sections siRNA Drug Mechanism Advantages - siRNA drugs can precisely silence pathogenic proteins and have a long duration of action, making them a hot direction for new drug development. The mechanism relies on the RISC complex to degrade target mRNA, with a typical structure of double-stranded RNA [10][12] - The delivery system is crucial for siRNA drug development, as siRNA is hydrophilic and requires specific delivery systems to enhance tissue accumulation and cellular penetration [23][24] Overseas Giants Entering Harvest Period - Alnylam is a pioneer in the siRNA industry, having developed the GalNAc delivery system, which has proven effective in human trials. The company has successfully commercialized several products and is expanding its pipeline in cardiovascular, metabolic, and CNS fields [43][53] Domestic siRNA Drug Development - Domestic companies are actively participating in the siRNA market, with collaborations with MNCs and a focus on innovative delivery methods. The investment recommendation includes companies like HengRui Medicine, Beite, and others in the A-share market, as well as several in the Hong Kong market [4]