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Fractyl Health (GUTS) investor relations material

Fractyl Health Study Update summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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Study Update summary26 Sep, 2025

Study background and rationale

  • Revita is an endoscopic duodenal ablation procedure designed to provide durable weight maintenance after GLP-1 discontinuation, aiming to reset metabolic function without chronic therapy and targeting a high unmet need in obesity care.

  • Revita holds FDA Breakthrough Device designation for weight maintenance in patients discontinuing GLP-1 therapy.

  • The REMAIN-1 program is modeled after established GLP-1 discontinuation studies, focusing on post-GLP-1 weight maintenance.

Study design and objectives

  • REMAIN-1 is a prospective, randomized, double-blind, sham-controlled study evaluating Revita for weight maintenance after GLP-1 discontinuation in adults with obesity without type 2 diabetes.

  • 45 adults with obesity (BMI 30-45 kg/m²), GLP-1 naïve, and no T2D, who achieved ≥15% weight loss on tirzepatide, were randomized 2:1 to Revita or sham after stopping GLP-1 therapy.

  • Baseline characteristics were balanced, with both groups achieving 18% weight loss on tirzepatide and 100% retention through 3 months.

  • The primary endpoint was total body weight change at 3 months post-procedure, with additional endpoints at 6 and 12 months.

  • Additional assessments included DEXA scans, metabolic markers, and patient-reported outcomes.

Key results and efficacy

  • At 3 months post-GLP-1 discontinuation, Revita patients lost an additional 2.5% total body weight, while sham patients regained 10%, resulting in a 12.5% treatment difference (p=0.014; 95% CI, -18.4 to -2.1%).

  • Revita patients maintained or further reduced weight, while sham patients showed immediate, steady weight regain.

  • The effect size was statistically significant and clinically meaningful, exceeding expectations based on prior studies.

  • Early weight maintenance signals at 1-3 months have historically predicted durable effects at longer time points.

  • The study provides the first randomized, double-blind evidence that weight maintenance is possible without chronic drug therapy.

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Frequently asked questions

Fractyl Health Inc. is a healthcare biotechnology company dedicated to the development of innovative therapies for metabolic diseases, particularly type 2 diabetes (T2D) and obesity. The company's main therapeutic platforms include Revita DMR and Rejuva. Revita DMR is an outpatient procedural therapy aimed at modifying duodenal dysfunction—a condition influenced by a high-fat and high-sugar diet which can lead to T2D and obesity. Rejuva represents a novel gene therapy platform, delivered via adeno-associated virus, designed to achieve long-term remission of T2D and obesity by altering metabolic hormone function in pancreatic islet cells. The company is headquartered in Burlington, Massachusetts, and its shares are listed on the NASDAQ.

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