Investment Rating - The report provides a positive investment rating for the MCE therapy in the treatment of B cell autoimmune diseases, particularly systemic lupus erythematosus (SLE) [8][10]. Core Insights - The report highlights the urgent need for effective treatments for SLE, which currently lacks a root-cause therapy, and emphasizes the potential of B cell-targeted therapies like MCE to address this unmet clinical need [10][22]. - It discusses the advantages of MCE therapy over existing treatments such as CAR-T and TCE, particularly in terms of safety and efficacy in depleting pathogenic B cells [10][42]. - The report identifies key companies to watch in the clinical progress of MCE therapies, including 宜明昂科, 赛诺菲, Dren Bio, and LTZ Therapeutics [11][12]. Summary by Sections 1. B Cell Autoimmune Diseases: Diverse Types and Large Population - Autoimmune diseases involve the immune system mistakenly attacking the body's own tissues, with significant prevalence among conditions like rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), multiple sclerosis (MS), and others [14][15]. 2. SLE: Large Population and Heavy Disease Burden - SLE affects approximately 7.8 million people globally, with a significant patient population in China, estimated at around 1 million [18][19]. - The disease presents severe symptoms and complications, leading to a high demand for effective treatments [19]. 3. SLE Treatment: Significant Unmet Clinical Needs, B Cell Therapy as a Mainstream Development - Current treatments for SLE are inadequate, with a low long-term remission rate and high recurrence risk [20][21]. - Innovative therapies that can achieve long-term remission or potential cures are urgently needed in the SLE treatment landscape [22]. 4. T Cell Killing: CAR-T and TCE - CAR-T and TCE therapies are explored for their potential to target and deplete pathogenic B cells, with CAR-T showing promising long-term efficacy in SLE patients [25][26]. - However, challenges such as high costs and safety concerns remain significant barriers to widespread adoption [32][33]. 5. Myeloid Cell Killing: MCE - MCE therapy utilizes myeloid cells to target and eliminate pathogenic B cells, showing potential for improved safety profiles compared to CAR-T and TCE therapies [47][50]. - The report emphasizes the innovative mechanisms of MCE and its potential to address the limitations of existing therapies [52].