Corbus CANYON-1 Phase 1b Topline for CRB-913 Peripherally Restricted CB1 Inverse Agonist for Obesity Remains On Track for September 2026
Corbus Pharmaceuticals (NASDAQ: CRBP) confirmed Tuesday September 1, 2026 that the CANYON-1 Phase 1b topline data readout for CRB-913 (a once-daily orally-administered highly peripherally-restricted CB1 inverse agonist for obesity) remains on track for September 2026, following completion of the last patient last visit announced August 4. The CANYON-1 study is a 16-week double-blind placebo-controlled dose-ranging trial in 240 obese non-diabetic U.S. adults testing once-daily oral doses of 20 mg, 40 mg, and 60 mg versus placebo with dose titration and 4-week safety follow-up. CRB-913 is engineered to remain peripheral (approximately 15-fold lower brain penetration than the CB1 inverse agonist monlunabant in preclinical models) to preserve efficacy while limiting the psychiatric side effects that led to the withdrawal of Sanofi's Acomplia (rimonabant) in 2008. The mechanism is designed to complement or serve as an alternative to GLP-1 receptor agonists, and the CANYON-1 tolerability profile will determine whether Corbus advances CRB-913 into Phase 2 later in 2026.