Corbus Pharmaceuticals Presents New CRB-913 Pre-Clinical Data At Obesity Week 2024

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• CRB-913 brain levels are 15-fold lower than monlunabant in lean mice
• Dose-response demonstrated for a range of 5 to 80 mg/kg/day achieving up to 38% weight loss in DIO mice
• Semaglutide treatment followed by its replacement with CRB-913 demonstrated continued weight loss in DIO mice
• Switching from semaglutide to CRB-913 led to a doubling of fat loss in DIO mice

NORWOOD, Mass., Nov. 04, 2024 (GLOBE NEWSWIRE) -- Corbus Pharmaceuticals Holdings, Inc. (NASDAQ: CRBP) (“Corbus” or the“Company”), an oncology and obesity company with a diversified portfolio, presents new pre-clinical data at Obesity Week 2024 further characterizing CRB-913, its highly peripherally restricted CB1 inverse agonist. The data are being presented as a Poster Presentation titled:“Induction and Maintenance Regimens with CB1 Inverse Agonist CRB-913 and Semaglutide in DIO Mice”.

Key findings:

• CRB-913 brain levels (both Cmax and AUC) were 15-fold lower than monlunabant at the same dose in mice.
• Plasma-to-brain ratio for CRB-913 was 10 times higher than monlunabant and 50 times higher than rimonabant at the same dose.
• CRB-913 demonstrated a wide dose response weight loss curve in DIO mice ranging from 5 mg/kg/day to 80 mg/kg/day with no plateauing effect and reaching a weight loss of 31% by day 19. Extending the dosing at 80 mg/kg/day to 28 days resulted in an additional weight loss reaching 38%.
• Allometrically, this dose range corresponds to human-equivalent doses of 30 mg/day to 450 mg/day.
• A first-of-its-kind experimental protocol in DIO mice demonstrated that weight loss induced by an incretin analog (semaglutide) can be maintained post withdrawal by replacing it with a CB1 inverse agonist (CRB-913) whereas replacement of semaglutide with vehicle led to a rapid and complete regain of weight.
• DEXA-scanning data revealed that switching from semaglutide to CRB-913 in DIO mice led to additional weight loss that was driven by a doubling in fat percentage reduction compared to the corresponding semaglutide maintenance cohort. This indicates a peripheral effect on fat metabolism not present with semaglutide.

“This work adds noteworthy new data to the pre-clinical characterization of CRB-913 and provides important context in comparison to monlunabant” said Yuval Cohen, PhD, CEO of Corbus.“It provides further evidence in support of CRB-913 as a markedly more peripherally restricted CB1 inverse agonist than monlunabant and suggests potential clinical use both as a monotherapy as well as a maintenance therapy post incretin analog induction treatment. This is in addition to our previously published work Morningstar et al, Obesity Aug 2023 showing that CRB-913 provides additive weight loss when combined with incretin analogs in DIO mice. The totality of this body of work provides insight into potentially three separate clinical usages: monotherapy, combination therapy and an induction/maintenance therapy.”

CRB-913 is on schedule to begin a Phase 1 clinical study in Q1 of 2025.

About Corbus
Corbus Pharmaceuticals Holdings, Inc. is an oncology and obesity company with a diversified portfolio and is committed to helping people defeat serious illness by bringing innovative scientific approaches to well-understood biological pathways. Corbus' pipeline includes CRB-701, a next generation antibody drug conjugate that targets the expression of Nectin-4 on cancer cells to release a cytotoxic payload, CRB-601, an anti-integrin monoclonal antibody which blocks the activation of TGFβ expressed on cancer cells, and CRB-913, a highly peripherally restricted CB1 receptor inverse agonist for the treatment of obesity. Corbus is headquartered in Norwood, Massachusetts. For more information on Corbus, visit corbuspharma.com . Connect with us on X , LinkedIn and Facebook .

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INVESTOR CONTACT:

Sean Moran
Chief Financial Officer
Corbus Pharmaceuticals
...

Bruce Mackle
Managing Director
LifeSci Advisors, LLC
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