Core Insights - Fractyl Health, Inc. announced promising preclinical data for its RJVA-001 gene therapy, which shows potential for durable metabolic improvements in type 2 diabetes (T2D) with low systemic GLP-1 exposure [1][2][3] - The therapy mimics natural hormone regulation, achieving significant metabolic benefits while minimizing side effects associated with current GLP-1 drugs [1][3][4] Group 1: RJVA-001 Efficacy and Mechanism - A single dose of RJVA-001 resulted in over 200 mg/dL reduction in fasting blood sugar and more than 2-fold increase in fasting insulin levels in db/db mice, demonstrating its efficacy in metabolic control [3][4] - RJVA-001 achieved glycemic control with circulating GLP-1 levels more than 5-fold lower than those seen with pharmacologic GLP-1 drugs, indicating a lower risk of side effects [3][4] - The therapy showed nutrient-responsive GLP-1 secretion, activating glucose-dependent expression in human beta cells, which reflects a more physiological response compared to constant drug stimulation [3][4] Group 2: Safety and Delivery Method - Endoscopic ultrasound-guided delivery of RJVA-001 in large animal models demonstrated targeted pancreatic expression with no observed toxicity, reinforcing its safety profile [4] - The procedure time for delivery was under 20 minutes, and biodistribution studies indicated minimal systemic distribution, with no adverse safety findings even at high doses [4] Group 3: Future Development and Regulatory Plans - Fractyl Health plans to submit the first Clinical Trial Application (CTA) module for RJVA-001 by June 2025, with preliminary human data expected in 2026 [1][6] - The company aims to transform the treatment of metabolic diseases by shifting from chronic management to durable disease-modifying therapies targeting root causes [5][6]
Fractyl Health Unveils New Rejuva® Smart GLP-1™ Pancreatic Gene Therapy Preclinical Data Highlighting Durable Potency and Safety with Limited Systemic GLP-1 Exposure at ASGCT 2025