FT-819

First patient treated with FT819 off-the-shelf CAR T-cell product candidate following fludarabine-free conditioning for severe lupus nephritis demonstrated durability of response with drug-free definition of remission in systemic lupus erythematosus (DORIS) at 12-month follow-up Held initial discussion with FDA under FT819 RMAT designation to seek feedback on registrational pathway in moderate-to-severe Systemic Lupus Erythematosus (SLE) and refractory Lupus Nephritis (LN) First extrarenal SLE patient treated with FT819 in the absence of conditioning, and as add-on to standard-of-care maintenance therapy, achieved Low Lupus Disease Activity State (LLDAS) at 3- and 6-month follow-up IND application allowed by FDA for FT836 MICA/B-targeted off-the-shelf CAR T cell with Sword and Shield™ technology for conditioning-free treatment of broad array of solid tumors Projected operating runway extended through YE27 to enable achievement of key clinical and collaboration milestones with $249 million in cash, cash equivalents, and investments SAN DIEGO , Aug. 12, 2025 (GLOBE NEWSWIRE) -- Fate Therapeutics, Inc. (NASDAQ: FATE), a clinical-stage biopharmaceutical company dedicated to bringing a first-in-class pipeline of induced pluripotent stem cell (iPSC)-derived off-the-shelf cellular immunotherapies to patients, today reported business highlights and financial results for the second quarter ended June 30, 2025 . “We begin the second half of the year with meaningful progress across our clinical programs as we continue our mission to make cell therapies accessible to all. Our priority remains focused on driving patient enrollment to demonstrate both the therapeutic differentiation and unique on-demand availability of FT819 in autoimmune diseases. We remain encouraged by the promising FT819 data in SLE and LN we reported this past quarter, showing significant disease improvement with less-intensive or no conditioning, and have made strides in expanding our trial sites and accelerating enrollment. Building on this momentum, we are also working closely with the FDA under our RMAT designation with the goal of commencing our registrational study for FT819 in SLE and LN in 2026,” said Bob Valamehr, Ph.D., MBA, President and Chief Executive Officer of Fate Therapeutics . “Additionally, we continue to strengthen our broader pipeline programs with an extended partnership with Ono Pharmaceuticals , and advancements in bringing our next-generation, off-the-shelf CAR T cells with Sword and Shield™ technology toward the clinic. Operationally, we have taken proactive steps to optimize our resource allocation and extend our cash runway, positioning us well to continue executing across our pipeline, working to bring transformative off-the-shelf cellular immunotherapies to patients with unmet needs.” FT819 iPSC-derived off-the-shelf CAR T-cell program in autoimmune disease In discussion with the FDA on potential registrational study design in moderate-to-severe SLE and refractory LN. In August, the Company met with the U.S. Food and Drug Administration (FDA) under its Regenerative Medicine Advanced Therapy (RMAT) designation for FT819 to seek preliminary feedback on a proposed registrational study design to support regulatory approval in moderate-to-severe SLE and refractory LN. In April 2025 , the Company was granted RMAT designation by the FDA for FT819 to treat moderate-to-severe SLE, including LN. Established under the 21st Century Cures Act, the RMAT designation program was created to expedite the development and review of regenerative medicine therapies for serious or life-threatening diseases or conditions. Interim Phase 1 SLE data using fludarabine-free conditioning regimen presented at EULAR congress and patient enrollment ongoing. The Phase 1 clinical trial of FT819 for the treatment of patients with moderate-to-severe SLE, including patients with LN and with extrarenal lupus (NCT06308978), continues enrolling patients at two dose levels – a single dose of 360 million cells and a single dose of 900 million cells. The Company intends to identify a recommended dose for a registration enabling study and continues to expand clinical site activation in the U.S. and entry into European Union and United Kingdom to broaden geographic reach. At the European Alliance of Associations for Rheumatology (EULAR) 2025 Congress in June, interim Phase 1 data from patients with moderate-to-severe SLE with or without LN using a fludarabine-free conditioning regimen was presented. Three patients with refractory active LN (median prior therapies = 8 [7-8]) were treated with a single dose of FT819 at 360 million cells following a fludarabine (flu)-free conditioning regimen. As of the data cut-off date of May 15, 2025 , all three patients achieved an objective renal response. The first LN patient achieved DORIS as well as complete renal response at 6 months, which was also noted at 12-month follow up. Additionally, one patient with refractory extrarenal lupus (prior therapies = 6, including cyclophosphamide; SLEDAI-2K = 18) was treated with a single dose of FT819 at 900 million cells and a single dose of cyclophosphamide. The patient was evaluable for 1-month follow-up, demonstrating improvement across multiple disease-specific scores including an 8-point reduction in SLEDAI-2K from baseline and a 1-point reduction in physician’s global assessment (PGA). First SLE patient treated as add-on to standard-of-care maintenance therapy. The Company’s Phase 1 SLE study is also designed to assess the safety, pharmacokinetics, and anti-B cell activity of FT819 as an add-on to maintenance therapy without conditioning chemotherapy. At the EULAR Congress in June, the Company reported that the first patient treated while on maintenance therapy, a stable dose of mycophenolate mofetil and steroids for the treatment of refractory extrarenal lupus, received a single dose of FT819 at 360 million cells as an add-on to maintenance therapy (prior therapies = 5). As of the data cut-off date of May 15, 2025 , the patient achieved low lupus disease activity state (LLDAS) at 3- and 6-months following administration of FT819 in the absence of conditioning. The patient also experienced a reduction in SLEDAI-2K to 2 from 8 at baseline and in PGA to 0.5 from 2 at baseline, with tapering of steroid dose to less than 5 mg / day. Patient enrollment is ongoing with the aim of investigating patient outcome with single- or multiple-doses of FT819 within a treatment cycle. Phase 1 SLE study amended to include additional B cell-mediated autoimmune diseases. The Company has expanded its current Phase 1 clinical trial of FT819 to include clinical investigation of multiple B cell-mediated autoimmune diseases, with plans to initiate independent dose-expansion cohorts in the second half of 2025 for the treatment of anti-neutrophil cytoplasmic antibody-associated vasculitis (AAV), idiopathic inflammatory myositis (IIM), and systemic sclerosis (SSc). FT825 / ONO-8250 iPSC-derived off-the-shelf CAR T-cell Program in Solid Tumors Phase 1 study ongoing for advanced solid tumors. Under its collaboration with Ono Pharmaceutical Co., Ltd. (Ono), the Company is conducting a multi-center, Phase 1 study to assess the safety, pharmacokinetics, and activity of FT825 / ONO-8250, a multiplex-engineered CAR T-cell product candidate targeting human epidermal growth factor receptor 2 (HER2), in patients with advanced solid tumors (NCT06241456). The study now includes fresh-biopsy testing for HER2 expression to ensure patient stratification and eligibility based on HER2 status. Dose escalation is currently ongoing at the third dose level of 900 million cells, with each patient administered conditioning chemotherapy and a single dose of FT825 / ONO-8250 either as monotherapy or in combination with epidermal growth factor receptor (EGFR)-targeted monoclonal antibody therapy. FT825 / ONO-8250 has demonstrated a favorable safety profile with no dose-limiting toxicities (DLTs) to date. Next-generation iPSC-derived off-the-shelf CAR T-cell Programs with Novel Sword & Shield™ Technology Designed to Reduce or Eliminate the Need for Conditioning Chemotherapy IND allowance by FDA for FT836 MICA/B-targeted CAR T-cell program. In July, the FDA allowed the Company’s investigational new drug (IND) application to initiate Phase 1 clinical testing of FT836, a multiplex-engineered CAR T-cell product candidate uniquely targeting major histocompatibility complex (MHC) proteins A (MICA) and B (MICB) which are expressed on many types of cancer cells with limited detection on healthy tissue. The Phase 1 study is designed to assess the safety and activity of FT836 without administration of conditioning chemotherapy for the treatment of advanced solid tumors. The development of FT836 is supported by a $4 million award from the California Institute of Regenerative Medicine (CIRM). Creation of master iPSC bank for FT839 dual-CAR T-cell program. FT839 is a CD19/CD38 dual CAR T-cell product candidate designed to target an array of aberrant immune cells. At the American Society of Gene & Cell Therapy (ASGCT) Annual Meeting in May, the Company presented preclinical data demonstrating robust eradication of aberrant CD19+ B cells, CD38+ plasma cells, and CD38+ activated T cells by FT839 using unmatched peripheral blood mononuclear cells sourced from a patient with autoimmune disease. The Company has generated a master iPSC bank for conduct of further preclinical and IND-enabling studies, and is currently evaluating opportunities for clinical investigation of FT839 in hematological malignancies and autoimmunity, beginning in 2026. Other Corporate Updates Extension of Ono collaboration for second solid tumor CAR T-cell product candidate. Under its collaboration with Ono, the Company is conducting preclinical development of a second iPSC-derived CAR T-cell candidate targeting an undisclosed solid tumor antigen. Based on a review of the preclinical data package for the collaboration candidate in June, the Company and Ono agreed to extend the collaboration’s research term and continue further preclinical development of the candidate. The Company expects to continue to receive co-funding from Ono in connection with its preclinical development activities under the joint research plan through at least June 2026 . Operating runway extension. The Company has implemented a tactical operations plan that is expected to extend funding of its operations through the end of 2027, which is intended to enable the achievement of key clinical and collaboration milestones while maintaining sufficient funds to support ongoing operations beyond those milestones. The cash runway extension includes the pipeline prioritization of its iPSC-derived CAR T-cell programs, a 12% reduction in its current employee headcount, and cost saving measures across the organization. Second Quarter 2025 Financial Results Cash & Investment Position: Cash, cash equivalents, and investments as of June 30, 2025 were $248.9 million . Total Revenue: Revenue was $1.9 million for the second quarter of 2025, which was derived from the conduct of preclinical development activities for a second collaboration candidate targeting an undisclosed solid tumor antigen under the Company’s collaboration with Ono Pharmaceutical. Total Operating Expenses: Total operating expenses were $38.9 million for the second quarter of 2025, including research and development expenses of $27.4 million and general and administrative expenses of $11.4 million . Such amount included $7.2 million of non-cash stock-based compensation expense. Shares Outstanding: As of June 30, 2025 , common shares outstanding were 114.7 million, pre-funded warrants outstanding were 3.9 million, and preferred shares outstanding were 2.8 million. Each preferred share is convertible into five common shares. About Fate Therapeutics’ iPSC Product PlatformHuman induced pluripotent stem cells (iPSCs) possess the unique dual properties of unlimited self-renewal and differentiation potential into all cell types of the body. The Company’s proprietary iPSC product platform combines multiplexed-engineering of human iPSCs with single-cell selection to create clonal master iPSC lines. Analogous to master cell lines used to mass produce biopharmaceutical drug products such as monoclonal antibodies, the Company utilizes its clonal master iPSC lines as a starting cell source to manufacture engineered cell products which are well-defined and uniform in composition, can be stored in inventory for off-the-shelf availability, can be administered in combination with other therapies, and can potentially reach a broad patient population. As a result, the Company’s platform is uniquely designed to overcome numerous limitations associated with patient- and donor-sourced cell therapies. Fate Therapeutics’ iPSC product platform is supported by an intellectual property portfolio of over 500 issued patents and 500 pending patent applications. About Fate Therapeutics, Inc. Fate Therapeutics is a clinical-stage biopharmaceutical company dedicated to bringing a pipeline of induced pluripotent stem cell (iPSC)-derived cellular immunotherapies to patients. Using its proprietary iPSC product platform, the Company has established a leadership position in creating multiplexed-engineered master iPSC lines and in the manufacture and clinical development of off-the-shelf, iPSC-derived cell products. The Company’s pipeline includes iPSC-derived T-cell and natural killer (NK) cell product candidates, which are selectively designed, incorporate novel synthetic controls of cell function, and are intended to deliver multiple therapeutic mechanisms to patients. Fate Therapeutics is headquartered in San Diego, CA. For more information, please visit www.fatetherapeutics.com. Forward-Looking StatementsThis release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 including statements regarding the Company’s results of operations, financial condition, anticipated operating expenses and cash runway, and sufficiency of its cash and cash equivalents to fund its operations, as well as statements regarding the advancement of and plans related to the Company's product candidates, clinical studies and preclinical research and development programs, the Company’s progress, plans and timelines for the clinical investigation of its product candidates, including the Company’s plans to complete IND-enabling studies and to submit IND applications for its product candidates, the initiation and continuation of enrollment in the Company’s clinical trials, the initiation of additional clinical trials, including in new indications, and additional dose cohorts in ongoing clinical trials of the Company’s product candidates, the availability of data from the Company’s clinical trials and the Company’s plans to provide updates on its clinical trials, the therapeutic and market potential of the Company’s research and development programs and product candidates, the Company’s clinical and product development strategy, and the Company’s expectations regarding progress and timelines, the objectives, plans and goals of its collaboration with Ono, and the Company’s expectations regarding the receipt of funding under the collaboration and the expected effects of the Company’s pipeline prioritization plan and reduction in force. These and any other forward-looking statements in this release are based on management's current expectations of future events and are subject to a number of risks and uncertainties that could cause actual results to differ materially and adversely from those set forth in or implied by such forward-looking statements. These risks and uncertainties include, but are not limited to, the risk that the Company’s research and development programs and product candidates, including those product candidates in clinical investigation, may not demonstrate the requisite safety, efficacy, or other attributes to warrant further development or to achieve regulatory approval, the risk that results observed in prior studies of the Company’s product candidates, including preclinical studies and clinical trials, will not be observed in ongoing or future studies involving these product candidates, the risk of a delay or difficulties in the manufacturing of the Company’s product candidates or in the initiation and conduct of, or enrollment of patients in, any clinical trials, the risk that the Company may cease or delay preclinical or clinical development of any of its product candidates for a variety of reasons (including requirements that may be imposed by regulatory authorities on the initiation or conduct of clinical trials, changes in the therapeutic, regulatory, or competitive landscape for which the Company’s product candidates are being developed, the amount and type of data to be generated or otherwise to support regulatory approval, difficulties or delays in patient enrollment and continuation in the Company’s ongoing and planned clinical trials, difficulties in manufacturing or supplying the Company’s product candidates for clinical testing, failure to demonstrate that a product candidate has the requisite safety, efficacy, or other attributes to warrant further development, and any adverse events or other negative results that may be observed during preclinical or clinical development), the risk that its product candidates may not produce therapeutic benefits or may cause other unanticipated adverse effects, the risk that the Company may not comply with its obligations under and otherwise maintain its collaboration agreement with Ono, the risk that research funding and milestone payments received by the Company under its collaboration may be less than expected, and the risk that the Company may incur operating expenses in amounts greater than anticipated. For a discussion of other risks and uncertainties, and other important factors, any of which could cause the Company’s actual results to differ from those contained in the forward-looking statements, see the risks and uncertainties detailed in the Company’s periodic filings with the Securities and Exchange Commission , including but not limited to the Company’s most recently filed periodic report, and from time to time in the Company’s press releases and other investor communications. Fate Therapeutics is providing the information in this release as of this date and does not undertake any obligation to update any forward-looking statements contained in this release as a result of new information, future events or otherwise. Contact: Christina Tartaglia Precision AQ212.362.1200christina.tartaglia@precisionaq.com Source: Fate Therapeutics, Inc.

在之前的文章中我们介绍可罗氏CD20 TCE双抗临床中治疗SLE的进展，其皮下给药，单次给药可以将B细胞压制接近200天后才能逐渐恢复，并且在一定程度上缓解SLE患者的病情，那CAR-T疗法呢。同样是在EULAR会议上，通用型CAR-T疗法公司Fate therapeutics也公布了其通用型CAR-TFT819在SLE中的初步临床数据。与罗氏Mosunetuzumab不同的是，FT819是靶向CD19的CAR-T，其已经敲除表达TCR的两个等位基因，从而避免异体T细胞带来的GvHD,另外，CAR插入在TRAC基因，从而防止TCR表达的同时可以在内部调节T细胞的功能。在生产方面，FT819是来源于iPSC，经过急用改造后筛选单克隆，后续利用单克隆进行master细胞库的建立，最终患者获得的细胞是从master细胞库扩增而来。该方案与抗体类似，做到了off-the-shelf，因此生产高效且成本较低。FT819治疗自身免疫疾病的临床设计如下图所示，主要分为两大组A和B，其中A组患者在接受CAR-T治疗前利用环磷酰胺等方法进行淋巴清淋，并且停止所有免疫抑制药物的使用；B组患者在接受治疗前无需淋巴细胞预处理并且可以继续接受MMF/MMA，AZA或者MTX等药物治疗。患者基数如下，在A组的不同剂量中，SLEDAI-2K评分在14~20之间，器官损伤主要是肾脏，皮肤粘膜和骨骼等，而B组患者SLEDAI-2K评分相对较低。所有患者在接受CAR-T治疗前，都接受过多种药物治疗，包括靶向B细胞的抗体疗法等。安全性方面，CRS仅发生在A1-DL2治疗患者中，为2级，其它主要的副作用主要为嗜中性白血球减少症，贫血，其中两个组别中出现4级嗜中性白血球减少症。相对之前TCE疗法，通用型CAR-T疗法也是相对比较安全的。疗效方面，A1-DL1患者治疗后，SLEDAI-2K评分从20降低到4，并且在治疗3个月后停止类固醇治疗后，缓解持续且疾病处于低活动状态，治疗后三个月后，多种症状消失，包括尿蛋白，脓尿，血尿，关节炎等。医生综合评价持续好转，肾脏持久反应。在治疗后，患者B细胞快速被清除，且直到一个月后才缓慢恢复，并且Naïve B 细胞比例升高，活跃的记忆型B细胞比例降低，转换基因B细胞比例降低，浆母细胞比例降低，双阴性 (DN) B 细胞比例降低，这表明，经过CAR-T治疗后，患者体内的B细胞群体被重新塑造。总体来看，A组接受治疗的患者，SLEDAI-2K评分都有大幅度降低，医生综合评价持续好转，尿蛋白肌酐比 (UPCr) 也持续降低，这说明肾脏损伤有所好转。另外，靶向细胞CD19+ 细胞给药后快速清除，1月后才开始逐渐恢复。B组患者在接受治疗前无需淋巴细胞预处理并且可以继续接受MMF/MMA，AZA或者MTX等药物治疗。接受治疗后3月后，SLEDAI-2K评分从8降到2，PGA评分降低到0.5，CD19阳性细胞初始有降低，但是没有被完全清除，非转换基因型B细胞增加。总结FT819作为一款通用型CAR-T疗法，其在生产成本上相较于传统的CAR-T疗法有巨大优势，在前期的临床探索中，通用型CAR-T疗法在肿瘤的治疗中虽然展现一定疗效，但是无法持久阻碍了其发展。而自免疾病的治疗为该类疗法开辟了新的方向。FT819本次披露的患者都是患病12~20年且病情比较严重的SLE患者，FT819治疗在多个指标上展现了良好的治疗效果，相比于罗氏的CD20 TCE疗法，还是具有较强的优势，部分患者在停止类固醇治疗后依然持续缓解。当然，这也有可能是不同靶点的原因。目前临床数据及随访时间相对较短，期待后续其临床数据的进一步披露。我们已经建立抗体密码读者交流群，有兴趣的可以扫描下方二维码添加微信进群，请主动备注姓名-公司-职位（高校-专业），非诚勿扰！往期精彩回顾抗体密码文章合集双特异抗体平台靶点相关双特异抗体作用机制综述，行业概览抗体筛选技术相关公司技术汇总医药资讯因为你的分享、点赞、在看我足足的精气神儿！声明本公众号所发表文章以宣传知识为目的，因此不构成投资，病人用药等建议。如果文章侵您的权益及时联系小编进行删除！欢迎扫码交流/咨询/合作=