Phase 2b ACCESS study designed to evaluate multiple doses up to 120 mg of GSBR-1290 over 36 weeks
Comprehensive development program also includes Phase 2 ACCESS II study to evaluate even higher doses of GSBR-1290 over 36 weeks; first patient expected to be dosed by end of 2024
Topline data from both ACCESS and ACCESS II studies expected in the fourth quarter of 2025
Company to host conference call today at 4:30 p.m. Eastern Time
Nov. 13, 2024 -- Structure Therapeutics Inc. (NASDAQ: GPCR), a clinical-stage global biopharmaceutical company developing novel oral small molecule therapeutics for metabolic and pulmonary diseases, today announced the first patients have been dosed in the randomized, double-blind, placebo-controlled Phase 2b ACCESS clinical study evaluating GSBR-1290 in participants living with obesity, or overweight with a weight-related comorbidity. GSBR-1290 is an orally-available, nonpeptide small molecule glucagon-like-peptide-1 receptor (GLP-1R) agonist that has demonstrated competitive weight loss and generally favorable safety and tolerability results in previous studies with once-daily dosing.
The Phase 2b ACCESS study is part of a comprehensive development program that also includes the Phase 2 ACCESS II study. ACCESS aims to enroll approximately 220 adults living with obesity, or overweight with a weight-related comorbidity, and is designed to evaluate multiple doses (up to 120 mg) of GSBR-1290 with an optimized “low and slow” titration regimen over 36 weeks. ACCESS II aims to enroll approximately 82 adults living with obesity, or overweight with a weight-related comorbidity, and is designed to evaluate two additional higher doses of GSBR-1290 (180 and 240 mg) over 36 weeks, following the same titration scheme as the ACCESS study. Topline data from both the ACCESS and ACCESS II studies are expected in the fourth quarter of 2025.
“We have designed the ACCESS and ACCESS II studies to generate a robust dataset to determine the target doses to move into Phase 3 clinical development with the goal of bringing GSBR-1290 to patients as rapidly as possible,” said Raymond Stevens, Ph.D., Founder and CEO of Structure Therapeutics. “In addition to its very competitive efficacy and tolerability profile, as an oral, nonpeptide small molecule GLP-1R agonist, we believe GSBR-1290 offers attractive manufacturing scalability advantages over peptide-based GLP-1R therapies, and we are excited to advance GSBR-1290 as our lead program. GSBR-1290 is just one of many compounds in our oral small molecule obesity portfolio, followed by our oral small molecule amylin development candidate which we expect to announce later this quarter.”
“Our 36-week ACCESS study is designed to assess multiple therapeutic doses of GSBR-1290 with a start low and go slow 4-week titration approach to optimize tolerability and increase the likelihood of maximizing weight loss,” said Blai Coll, M.D., Ph.D., Chief Medical Officer of Structure Therapeutics. “Based on the data from our earlier studies, clean safety profile and proportional exposure of GSBR-1290, we are also initiating the ACCESS II study to evaluate higher doses of GSBR-1290. We look forward to data from both studies expected in the fourth quarter of 2025.”
ACCESS is a randomized, double-blind, placebo-controlled, Phase 2b dose-range finding study of GSBR-1290 in approximately 220 adult participants living with obesity (body mass Index ≥ 30 kg/m2), or overweight (body mass index ≥ 27 kg/m2) with at least one weight-related comorbidity. Participants will start at 5mg of GSBR-1290 (or placebo) with a 4-week titration schedule, reaching target doses of 45 mg, 90 mg and 120 mg. The primary endpoint is percent change in body weight from baseline to week 36. Secondary endpoints include safety and tolerability of the monthly titration scheme, as well as pharmacokinetics of GSBR-1290.
ACCESS II is a randomized, double-blind, placebo-controlled, Phase 2 dose-range finding study of GSBR-1290 in approximately 82 adult participants living with obesity, or overweight with at least one weight-related comorbidity. The study is designed to evaluate two higher doses of GSBR-1290. Participants will start at 5mg of GSBR-1290 (or placebo) and will follow a 4-week titration schedule up to target doses of 120 mg, 180 mg and 240 mg.
GSBR-1290 is an orally-available, small molecule agonist of the glucagon-like-peptide-1 (GLP-1) receptor agonist, a validated drug target for the treatment of obesity and type 2 diabetes mellitus (T2DM). Through Structure Therapeutics’ structure-based drug discovery platform, GSBR-1290 was designed to be a biased GPCR agonist, which selectively activates the G-protein signaling pathway. Beyond GSBR-1290, Structure Therapeutics is developing next generation oral small molecules including amylin receptor agonists, and other combination GLP-1 receptor agonists candidates such as glucose-dependent insulinotropic polypeptide (GIP), glucagon and apelin oral small molecules.
Structure Therapeutics is a science-driven clinical-stage biopharmaceutical company focused on discovering and developing innovative oral small molecule treatments for chronic metabolic and cardiopulmonary conditions with significant unmet medical needs. Utilizing its next generation structure-based drug discovery platform, the Company has established a robust GPCR-targeted pipeline, featuring multiple wholly-owned proprietary clinical-stage small molecule compounds designed to surpass the manufacturing scalability limitations of traditional biologic and peptide therapies and be accessible to more patients around the world. For additional information, please visit www.structuretx.com.
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