兴业证券主要观点如下： TCE在血液瘤中的疗效与商业化能力已充分验证，实现实体瘤中的广泛应用仍需解决诸多挑战 当前全球已获批的TCE疗法共有12款(美国获批10款，中国获批6款)，其中9款用于血液瘤，仅3款用于 实体瘤。TCE在实体瘤中的应用需要解决以下问题：(1)靶向肿瘤外毒性，避免TCE分子对健康组织中表 达TAA的组织进行杀伤;(2)解决肿瘤微环境中T细胞浸润的缺乏;(3)调节性T细胞等免疫抑制性细胞及其 产生的细胞因子引起的抑制性肿瘤微环境，导致效应T细胞耗竭等问题。 非全长双抗、2+1格式设计、TCR、前药、共刺激靶点与选择性T细胞靶点等设计进一步增强TCE在实 体瘤的适用性 (1)Amgen与MSD非全长双抗设计在DLL3靶点中表现出突出的抗肿瘤活性：Amgen基于HLE-BiTE平台 开发的DLL3/CD3双抗塔拉妥单抗已成功实现铂化疗进展SCLC的获批上市;MSD的Gocatamig高剂量组在 后线SCLC患者中实现较高比例的肿瘤应答，且对脑转移患者表现出差异化疗效。 (2)"2+1"格式设计有望实现对CD3亲和力的精准调控：Xencor公司XmAb平台的("2+1"格式设计有效调控 CD3靶 ...

Summary of Xencor Conference Call Company Overview - **Company**: Xencor - **Industry**: Biopharmaceuticals, specifically focusing on protein engineering and bispecific antibodies - **Key Executives Present**: Basil Dahiyat (Co-founder, President, CEO), Dane Leone (Executive Vice President, Chief Strategy Officer) [1][2] Core Points and Arguments Expansion into Autoimmune Diseases - Xencor is re-entering the autoimmune disease space with the development of the anti-TL1A antibody, XmAb 942, after previously focusing on oncology [3][4] - The decision to return to autoimmune diseases was driven by the potential for creating differentiated clinical assets [4] - XmAb 942 is designed for high potency and long half-life, targeting TL1A, an inflammatory cytokine linked to inflammatory bowel diseases (IBD) [5][6] Clinical Data and Studies - Phase 1 data for XmAb 942 showed a half-life of over 71 days and sustained suppression of TL1A for over 16 weeks in healthy volunteers [7] - The ongoing Phase 2b study, XENITH-UC, aims to enroll approximately 220 patients to assess clinical remission in ulcerative colitis [11] - The study is designed to facilitate a seamless transition into registration-enabling studies, aiming for a competitive time to market [9] Future Developments - XmAb 412, a bispecific antibody targeting TL1A and IL-23, is expected to enter first-in-human trials in 2026 [10][12] - The combination of TL1A and IL-23 targeting is anticipated to enhance efficacy in IBD treatment [12][13] Other Autoimmune Programs - Xencor is also developing plamotamab, a CD20/CD3 bispecific antibody for rheumatoid arthritis (RA), leveraging their oncology experience to optimize dosing regimens [14][15] - XmAb 657, another bispecific targeting CD19/CD3, is in early development stages for myositis and other indications [16][17] Oncology Developments - XmAb 819, targeting ENPP3 in renal cell carcinoma, has shown a 25% overall response rate in heavily pretreated patients [23][24] - The company plans to expand the use of XmAb 819 into colorectal and lung cancers by 2026 [23][25] - XmAb 541, targeting CLDN6 in gynecologic tumors, is also progressing with early promising data [26][27] Partnerships and Collaborations - Xencor has established partnerships with Amgen and Johnson & Johnson, focusing on bispecific antibodies and other therapeutic areas [30][31] - The partnership with Amgen includes a phase 3 trial for Xaluritamig in metastatic castration-resistant prostate cancer, with potential royalties and milestones for Xencor [30] - Future partnerships are anticipated to enhance Xencor's capabilities and market reach [34][35] Additional Important Information - Xencor aims to be a commercial company, focusing on maximizing stakeholder value through strategic clinical development and potential partnerships [34][36] - The company is well-funded through 2028, allowing for flexibility in decision-making regarding asset management and partnerships [36] This summary encapsulates the key points discussed during the conference call, highlighting Xencor's strategic direction, clinical developments, and partnership strategies in the biopharmaceutical industry.