Ascletis Selects Its First Oral GLP-1R/GIPR/GCGR Triple Peptide Agonist, ASC37, for Clinical Development

-  Utilizing Ascletis' Peptide Oral Transport ENhancement Technology (POTENT), ASC37 oral tablets achieved average absolute oral bioavailability of 4.2%, approximately 9-, 30-, and 60-fold higher than semaglutide, tirzepatide, and retatrutide in the oral SNAC formulation, respectively, in head-to-head non-human primate (NHP) studies.

-  ASC37 oral tablets' drug exposure, as measured by the area under curve (AUC), was approximately 57-fold of retatrutide's drug exposure in head-to-head NHP studies.

-  Average observed half-life of ASC37 oral tablets was approximately 56 hours in NHP studies, supporting once daily and less frequent oral dosing.

-  ASC37 in vitro activity was approximately 5-, 4- and 4-fold more potent than retatrutide for GLP-1R, GIPR and GCGR, respectively.

-  Submission of an Investigational New Drug Application (IND) to the U.S. Food and Drug Administration (FDA) for ASC37 oral tablets is expected in the second quarter of 2026.

-  The Company will host a conference call in Mandarin at 10:00 a.m. China Standard Time on December 1, 2025.

HONG KONG, Nov. 30, 2025 /PRNewswire/ -- Ascletis Pharma Inc. (HKEX: 1672, "Ascletis") announces that it has selected ASC37 oral tablets, its first oral GLP-1R/GIPR/GCGR^[1] triple peptide agonist, as a clinical development candidate. Ascletis expects to submit an Investigational New Drug Application (IND) to the U.S. Food and Drug Administration (FDA) for ASC37 oral tablets for the treatment of obesity in the second quarter of 2026.

ASC37 oral tablets is the Company's first incretin drug candidate developed with its proprietary Peptide Oral Transport ENhancement Technology (POTENT). 

ASC37, a GLP-1R, GIPR, and GCGR triple peptide agonist, was discovered and optimized in-house utilizing Ascletis' Artificial Intelligence-Assisted Structure-Based Drug Discovery (AISBDD). ASC37 in vitro activity was approximately 5-, 4-, and 4-fold more potent than retatrutide for GLP-1R, GIPR and GCGR, respectively.

Utilizing Ascletis' POTENT technology, ASC37 oral tablets achieved average absolute oral bioavailability^[2] of 4.2%, which was approximately 9-, 30-, and 60-fold higher than semaglutide, tirzepatide, and retatrutide in the oral SNAC ^[3] formulation, respectively, in head-to-head non-human primate (NHP) studies. Furthermore, after oral administration, ASC37 oral tablets' drug exposure, as measured by the area under curve (AUC), with the POTENT formulation was approximately 57-fold of retatrutide's drug exposure with the oral SNAC formulation, in head-to-head NHP studies.

Average observed half-life of ASC37 oral tablets was approximately 56 hours in NHP studies, supporting once daily and less frequent oral dosing.

 "Selection of ASC37, a promising oral GLP-1R/GIPR/GCGR triple peptide agonist, for clinical development once again demonstrates our strong R&D capabilities and our commitment to address the unmet needs for the treatment of obesity," said Jinzi Jason Wu, Ph.D., Founder, Chairman and CEO of Ascletis, "Leveraging our proprietary technology platforms, including AISBDD and POTENT, Ascletis has successfully established a highly competitive, differentiated and diverse pipeline portfolio which can potentially effectively address the various treatment needs of patients with obesity and other metabolic diseases."

Conference Call

Ascletis will host a conference call in Mandarin at 10:00 a.m. China Standard Time on December 1, 2025. A live webcast of the call will be available via Tencent Meeting/ VooV Meeting, with the Meeting ID: 495-266-842, or access links of:

Chinese Mainland: https://meeting.tencent.com/dm/10ve6whW8Rbl; or

International: https://voovmeeting.com/dm/10ve6whW8Rbl.

About Ascletis Pharma Inc.

Ascletis Pharma Inc. is a fully integrated biotechnology company focused on the development and commercialization of potential best-in-class and first-in-class therapeutics to treat metabolic diseases. Utilizing its proprietary Artificial Intelligence-Assisted Structure-Based Drug Discovery (AISBDD) and Ultra-Long-Acting Platform (ULAP) technologies as well as Peptide Oral Transport ENhancement Technology (POTENT), Ascletis has developed multiple drug candidates in-house, including both small molecules and peptides, such as its lead program, ASC30, a small molecule GLP-1R agonist designed to be administered once daily orally and once monthly to once quarterly subcutaneously as a treatment therapy and a maintenance therapy for chronic weight management; ASC36, a once-monthly subcutaneously administered amylin receptor peptide agonist, ASC35, a once-monthly subcutaneously administered GLP-1R/GIPR dual peptide agonist and ASC37, an oral GLP-1R/GIPR/GCGR triple peptide agonist for chronic weight management. Ascletis is listed on the Hong Kong Stock Exchange (1672.HK).

For more information, please visit www.ascletis.com.

Contact：

Peter Vozzo
ICR Healthcare
443-231-0505 (U.S.)
Peter.vozzo@icrhealthcare.com 

Ascletis Pharma Inc. PR and IR teams
+86-181-0650-9129 (China)
pr@ascletis.com
ir@ascletis.com 

source: Ascletis Pharma Inc.