靖因药业递表港股IPO，上轮投后2.5亿美元

Core Viewpoint - Jingyin Pharmaceutical has officially filed for an IPO in Hong Kong, with its prospectus now publicly available, marking a significant step in its growth strategy [1]. Company Overview - Jingyin Pharmaceutical was established in 2021 and focuses on leveraging the clinical and commercial potential of siRNA therapies. The company has developed a diverse product pipeline with three main candidates: FXI siRNA, Lp(a) siRNA, and INHBE siRNA, targeting coagulation disorders, cardiovascular metabolic diseases, and obesity, respectively. The market potential for these therapies is substantial [4]. Product Pipeline - The FXI siRNA is currently in Phase II clinical trials in Europe and has a collaboration agreement with CRISPR Therapeutics for joint development, sharing global rights on a 50:50 basis. This partnership includes a cash infusion of $25 million and $70 million in equity, along with potential milestone payments totaling $800 million [4][6]. - The Lp(a) siRNA is in Phase I clinical trials, showing over 95% suppression after 43 days at doses of 300mg and 600mg, with a sustained effect lasting at least 12 weeks. There is potential for a dosing regimen of once every six months or even annually [9]. - The INHBE siRNA is also part of the pipeline, with ongoing development efforts [4]. Financial Background - Since its inception, Jingyin Pharmaceutical has completed three rounds of financing, with the latest being a $47.5 million Series B2 round in May 2025, resulting in a post-money valuation of $252.5 million [6][7]. Technology Platform - The company utilizes a proprietary PEPR technology platform that employs unique chemical modification techniques, enhancing the efficacy and durability of target protein knockdown. This platform positions Jingyin Pharmaceutical favorably within the siRNA landscape [11][14]. Market Position - The emergence of small nucleic acids as a significant drug modality, alongside antibodies and small molecules, is expanding treatment options for various diseases, including genetic disorders and cardiovascular diseases. Jingyin Pharmaceutical's established siRNA technology platform and differentiated product pipeline may position it as a new benchmark in the international market for small nucleic acids [14].