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  Title	Adicet Bio Announces FDA Clearance of IND Amendment to Evaluate ADI-001 in Idiopathic Inflammatory Myopathy and Stiff Person Syndrome
  ID	3288698
  External ID	110000494
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  Published Date	Oct. 16, 2024, 6 a.m.
  Summary	Adicet Bio Announces FDA Clearance of IND Amendment to Evaluate ADI-001 in Idiopathic Inflammatory Myopathy and Stiff Person Syndrome Business Wire Wed, Oct 16, 2024, 4:00 AM 7 min read In This Articl
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  Content ID	1678092
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  Content	Adicet Bio Announces FDA Clearance of IND Amendment to Evaluate ADI-001 in Idiopathic Inflammatory Myopathy and Stiff Person Syndrome Business Wire Wed, Oct 16, 2024, 4:00 AM 7 min read In This Article: ACET +6.43% ADI-001 clinical development program now addresses six autoimmune diseases Patient enrollment for idiopathic inflammatory myopathy and stiff person syndrome cohort expected to be initiated in the first quarter of 2025 Company plans to report initial clinical data from Phase 1 study in multiple autoimmune diseases in the first half of 2025 REDWOOD CITY, Calif. & BOSTON, October 16, 2024 --( BUSINESS WIRE )--Adicet Bio, Inc. (Nasdaq: ACET), a clinical stage biotechnology company discovering and developing allogeneic gamma delta T cell therapies for autoimmune diseases and cancer, today announced that the U.S. Food and Drug Administration (FDA) has agreed to an amendment to the Company’s Investigational New Drug (IND) application to evaluate ADI-001 in idiopathic inflammatory myopathy (IIM) and stiff person syndrome (SPS) as part of the ongoing Phase 1 trial in autoimmune diseases. The Company plans to initiate enrollment for IIM and SPS patients in the first quarter of 2025. This announcement follows the FDA’s recent agreements on amendments to the Company’s ADI-001 IND application to evaluate three additional indications beyond lupus nephritis (LN), including systemic lupus erythematosus (SLE), systemic sclerosis (SSc) and anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis (AAV). "The FDA’s acceptance of our IND amendment to evaluate ADI-001 in patients with IIM and SPS builds on our recent momentum in autoimmune diseases, expanding our efforts to six autoimmune indications as we aim to bring our differentiated gamma delta T cell therapy candidates to more patients in need of new treatment options," said Chen Schor, President and Chief Executive Officer at Adicet Bio. "Following our recent announcement highlighting clinical biomarker data which demonstrated robust B-cell depletion and preferential trafficking to tissues and organs, we believe in ADI-001’s best-in-class potential for the treatment of autoimmune diseases, and we look forward to initiating patient enrollment in IIM and SPS in the first quarter of 2025 in our ongoing Phase 1 clinical program." The ADI-001 Phase 1 program in autoimmune diseases will have four separate arms, enrolling LN and SLE patients into one arm, SSc patients into a second arm, AAV patients into a third arm, and IIM and SPS patients into a fourth arm. The fourth cohort combines several rare autoimmune muscle diseases into a single dose-finding population, including SPS and the following IIM subtypes: dermatomyositis, anti-synthetase syndrome, immune-mediated necrotizing myopathy, polymyositis, and overlap myositis. Enrolled patients will receive a single dose of ADI-001. The dose-limiting toxicity window is 28 days with response and safety assessments conducted on Day 28 and during the follow up period on months 3, 6, 9, 12, 18, and 24. The primary objectives of the study are to evaluate the safety and tolerability of ADI-001. Secondary objectives include measuring cellular kinetics, pharmacodynamics, changes in autoantibody titers, and appropriate disease activity scores in each indication. Story Continues About Idiopathic Inflammatory Myopathy Idiopathic inflammatory myopathy (IIM, or myositis) refers to a group of rare autoimmune disorders characterized by chronic muscle inflammation and progressive muscle weakness. IIM primarily affects skeletal muscles but can also involve other organs such as the lungs, heart, and skin. Five of the main subtypes include dermatomyositis, anti-synthetase syndrome, immune-mediated necrotizing myopathy, polymyositis, and overlap myositis, all of which can lead to significant functional impairment and have the potential to be life threatening. There is no available cure for IIM and many patients on current treatments have refractory disease and may experience significant side effects. About Stiff Person Syndrome Stiff person syndrome (SPS) is a rare neurological autoimmune disorder characterized by severe muscle stiffness and spasms, primarily affecting the torso and limbs. Muscle stiffness caused by SPS often impairs mobility, making it difficult for patients to walk, bend, or perform daily activities. Muscle spasms can be triggered by sudden stimuli such as loud noises, physical contact, or emotional distress, and can result in a "statue-like" posture when severe. Due to its rarity and overlapping symptoms with other conditions, SPS is frequently misdiagnosed, often as an anxiety disorder or movement disorder. There is currently no available cure for SPS. About ADI-001 ADI-001 is an investigational allogeneic gamma delta chimeric antigen receptor (CAR) T cell therapy targeting CD20 for the treatment of autoimmune diseases. ADI-001 was granted Fast Track Designation by the FDA for the treatment of relapsed/refractory class III or class IV lupus nephritis (LN), and the ongoing Phase 1 study is also evaluating ADI-001 for the treatment of systemic lupus erythematosus (SLE), systemic sclerosis (SSc), anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis (AAV), idiopathic inflammatory myopathy (IIM, or myositis), and stiff person syndrome (SPS). In the Phase 1 GLEAN trial, ADI-001 was shown to target B-cells via an anti-CD20 CAR and demonstrated robust exposure and complete CD19+ B-cell depletion both in peripheral blood and secondary lymphoid tissue. About Adicet Bio, Inc. Adicet Bio, Inc. is a clinical stage biotechnology company discovering and developing allogeneic gamma delta T cell therapies for autoimmune diseases and cancer. Adicet is advancing a pipeline of "off-the-shelf" gamma delta T cells, engineered with chimeric antigen receptors (CARs), to facilitate durable activity in patients. For more information, please visit our website at https://www.adicetbio.com . Forward-Looking Statements This press release contains "forward-looking statements" of Adicet within the meaning of the Private Securities Litigation Reform Act of 1995 relating to the business and operations of Adicet. The words "anticipate," "believe," "continue," "could," "estimate," "expect," "intend," "may," "plan," "potential," "predict," "project," "should," "target," "would" and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. These forward-looking statements include, but are not limited to, express or implied statements regarding: clinical development of Adicet’s product candidates, including future plans or expectations for ADI-001 and the potential safety, tolerability and efficacy of ADI-001 for the treatment of autoimmune diseases; the potential for ADI-001 to be a best-in-class treatment for autoimmune diseases; the clinical development of ADI-001 in LN, SLE, SSc and AAV; and the expected progress, timing and success of the Phase 1 clinical study of ADI-001 in IIM and SPS, including timing and expectations for enrollment and future data releases. Any forward-looking statements in this press release are based on management’s current expectations and beliefs 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, including without limitation, the effect of global economic conditions and public health emergencies on Adicet’s business and financial results, including with respect to disruptions to our preclinical and clinical studies, business operations, employee hiring and retention, and ability to raise additional capital; Adicet’s ability to execute on its strategy including obtaining the requisite regulatory approvals on the expected timeline, if at all; that positive results, including interim results, from a preclinical or clinical study may not necessarily be predictive of the results of future or ongoing studies; clinical studies may fail to demonstrate adequate safety and efficacy of Adicet’s product candidates, which would prevent, delay, or limit the scope of regulatory approval and commercialization; and regulatory approval processes of the U.S. Food and Drug Administration and comparable foreign regulatory authorities are lengthy, time-consuming, and inherently unpredictable; and Adicet’s ability to meet production and product release expectations. For a discussion of these and other risks and uncertainties, and other important factors, any of which could cause Adicet’s actual results to differ from those contained in the forward-looking statements, see the section entitled "Risk Factors" in Adicet’s most recent annual report on Form 10-Q and subsequent filings with the U.S. Securities and Exchange Commission (SEC), as well as discussions of potential risks, uncertainties, and other important factors in Adicet’s other filings with the SEC. All information in this press release is as of the date of the release, and Adicet undertakes no duty to update this information unless required by law. View source version on businesswire.com: https://www.businesswire.com/news/home/20241016854445/en/ Contacts Adicet Bio, Inc. Investor and Media Contacts Investors: Anne Bowdidge abowdidge@adicetbio.com Janhavi Mohite Precision AQ 212-362-1200 janhavi.mohite@precisionaq.com Media: Kerry Beth Daly kbdaly@adicetbio.com View Comments Terms and Privacy Policy Your Privacy Choices CA Privacy Notice Recommended Stories
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