Fate Therapeutics Presents New Phase 1 Clinical Data of FT819 Off-the-shelf, CAR T-cell Product Candidate for Systemic Lupus Erythematosus
All Three Patients Treated in First Dose Cohort Administered Fludarabine-free Conditioning and Show Rapid, Deep, and Sustained B-cell Depletion with Favorable Safety Profile
First Patient to Reach 6-Month Follow-up Remains in DORIS Clinical Remission and Free of All Immunosuppressive Therapies
Company Plans to Initiate Dose Expansion at First Dose Level of 360M Cells
“We continue to be very pleased with early clinical observations of fludarabine-free conditioning and FT819 off-the-shelf, CAR T-cell therapy in patients with moderate-to-severe SLE. The remarkable experience of the first patient treated in April is ongoing, as the patient remains on-study in drug-free clinical remission. In addition, the initial clinical and translational data from the two additional patients treated at the first dose level continue to support the potential for disease transformation,” said Bob Valamehr, President of Research and Development of
FT819 Phase 1 Autoimmunity Study
The ongoing multi-center, Phase 1 clinical trial for patients with moderate-to-severe SLE is designed to evaluate the safety, pharmacokinetics, and anti-B cell activity of FT819 (NCT06308978). The first three patients, all of whom presented with active LN despite having been treated with multiple standard-of-care therapies, received fludarabine-free conditioning consisting of either cyclophosphamide alone or bendamustine alone, followed by a single dose of FT819 at 360 million cells. In all three patients, FT819 was detected in the peripheral blood and rapid, deep, and sustained elimination of CD19+ B cells in the periphery was observed during the first month of treatment. All three patients remain on-study, and there have been no DLTs and no events of any grade of CRS, ICANS, or GvHD. Based on these clinical observations, the Company is initiating dose expansion in up to 10 patients at this first dose level, and is also escalating dose to 720 million cells.
The Company’s FT819 Phase 1 Autoimmunity study also includes a second treatment arm to assess the safety, pharmacokinetics, and anti-B cell activity of a single dose of FT819 as an add-on to maintenance therapy without conditioning chemotherapy in patients with SLE. The first patient has now been treated in this second arm, which is being conducted in parallel with the study’s conditioning arm.
FT819 Patient 1 Case Study
The first patient treated in the Phase 1 Autoimmunity study presented with active LN and severe disease, which was marked by renal BILAG A (
iPSC-derived CAR T-cell Product Platform
The Company also highlighted the scientific progress of its proprietary iPSC-derived CAR T-cell product platform at the ASH Annual Meeting. In an oral presentation entitled “Off-the-shelf Product Candidate Incorporates Novel Sword & Shield Technology Designed to Promote Functional Persistence without Conditioning Chemotherapy”, the Company compared its novel Sword & Shield technology, which utilizes a 4-1BB-targeted CAR (ADR) alongside the complete knock-out of CD58 (CD58KO) to both target and evade host alloreactive immune cells, to other host immune evasion strategies. In preclinical studies of allogeneic models, the Company showed that its Sword and Shield Technology specifically engaged with alloreactive T cells and supported functional persistence while avoiding the killing of general host T cells and activated anti-tumor T cells. This unique observation was not seen with other approaches that are either too broad and undesirably eliminate most of the host immune system or have limited coverage and cannot adequately protect the allogeneic cell product. In a second presentation entitled “Development of Induced Pluripotent Stem Cell-Derived T Cells Exhibiting Phenotypic and Functional Attributes of Primary CAR T Cells”, the Company conducted a series of high-resolution analyses to show stimulated iPSC-derived T cells elicit primary T-cell like activation, proliferation, transcriptional and functional program engagement, and iPSC-derived CAR T cells uniquely emulate antigen-mediated response similar to primary-derived autologous CAR T cells.
About Fate Therapeutics’ iPSC Product Platform
Human 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 combined and administered 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 the manufacture of cell therapies using patient- or donor-sourced cells. Fate Therapeutics’ iPSC product platform is supported by an intellectual property portfolio of over 500 issued patents and 500 pending patent applications.
About
Forward-Looking Statements
This release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 including statements regarding the safety and therapeutic potential of the Company’s iPSC-derived CAR T-cell product candidates, including FT819, 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 expected clinical development plans for FT819, the initiation and continuation of enrollment in the Company’s clinical trials, the initiation of additional clinical trials and additional dose cohorts in ongoing clinical trials of the Company’s product candidates, the timing and availability of data from the Company’s 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, plans, and timelines. 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 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 or delays 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), and the risk that its product candidates may not produce therapeutic benefits or may cause other unanticipated adverse effects. 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
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Precision AQ
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christina.tartaglia@precisionaq.com
Source: Fate Therapeutics, Inc.