Core Viewpoint - The siRNA drug sector is entering a rapid development phase, transitioning from rare diseases to common diseases, with significant commercial potential in large indications due to advancements in delivery systems and technology [1][2]. Group 1: Industry Trends - The siRNA drug market is evolving as a third wave of therapeutics following small molecules and antibody drugs, characterized by strong target expansion capabilities, extended research applicability, long-lasting effects, and reduced drug resistance [1]. - The GalNac delivery system has significantly improved the efficiency and specificity of siRNA drugs, leading to their validation in rare diseases and a gradual shift towards common disease applications, including cardiovascular diseases, chronic hepatitis B, weight loss, anticoagulation, and autoimmune diseases [1][3]. Group 2: Business Development and Collaborations - The market for small nucleic acid drugs is experiencing active business development (BD) transactions, with multinational corporations (MNCs) leveraging their understanding of indications to license pipelines or collaborate on technology platforms [2]. - The ongoing patent cliff faced by many pharmaceutical companies is driving them to seek new products to mitigate potential risks, making the acquisition of pipelines from companies specializing in small nucleic acid technology a rapid solution [2]. Group 3: Focus Areas and Future Opportunities - The commercialization of siRNA drugs is focused on common diseases with clear biological mechanisms, where early movers can achieve significant commercial benefits and collaboration opportunities [3]. - Future breakthroughs in the siRNA sector may depend on exploring new disease areas and overcoming challenges related to extrah hepatic delivery systems [3]. Group 4: Domestic Companies - Listed companies in the siRNA sector include Yuyuan Pharmaceutical, Hengrui Medicine, CSPC Pharmaceutical Group, Junshi Biosciences, Frontier Biotechnologies, Fuyuan Pharmaceutical, Chengdu Xian Dao, and Shengnuo Pharmaceutical [4]. - Unlisted companies include Bowang Pharmaceutical, Rebo Biotech, Jingyin Pharmaceutical, Shengyin Biotech, Dairui Biotech, and Weia Zhen Biotech [4].