Ascletis Announces Initiation of Global Phase III for Oral Small Molecule GLP-1, ASC30 and Positive Preclinical Data for Its First-in-Class Oral Small Molecule GLP-1/GIP/Amylin Fixed-Dose Combination

-Initiated global Phase III program for oral small molecule GLP-1, ASC30, which will enroll approximately 4,600 participants with obesity or overweight across two pivotal trials in the U.S., Europe, and Canada.

-Positive preclinical data in non-human primates announced for first-in-class once-daily oral small molecule GLP-1/GIP/amylin fixed-dose combination.

-Industry leading one-pill once-daily oral small molecule portfolio for obesity and other metabolic diseases: five programs spanning GLP-1, GIP, and amylin targets, alone and in fixed-dose combinations.

-Sufficient cash on hand to support operations into 2029, beyond the expected submission of a New Drug Application (NDA) in the U.S. by the end of 2028 and a Marketing Authorisation Application (MAA) in Europe in early 2029 for ASC30.

HONG KONG, Aug. 3, 2026 /PRNewswire/ -- Ascletis Pharma Inc. (HKEX: 1672, "Ascletis") announces once-daily oral small molecule GLP-1 (ASC30) has received Phase III clearance from the U.S. Food and Drug Administration (FDA). ASC30 is the primary pillar of Ascletis' oral small molecule obesity portfolio. The Company has initiated a global Phase III program for ASC30 chronic weight management indication consisting of two pivotal global Phase III, multicenter, randomized, double-blind, placebo-controlled trials (AURORA-1 NCT07743463 and AURORA-2 NCT07743450) in a total of approximately 4,600 participants with obesity or overweight in the U.S., Europe, and Canada. The two pivotal studies will investigate the long-term efficacy, safety, and tolerability of three maintenance doses (20 mg, 40 mg and 60 mg) of once-daily oral ASC30 compared with placebo in participants with obesity or overweight without type 2 diabetes (AURORA-1) and in participants with obesity or overweight with type 2 diabetes (AURORA-2). The treatment duration of both AURORA-1 and AURORA-2 are 72 weeks, with titrations of 12 weeks, 16 weeks and 20 weeks for 20 mg, 40 mg and 60 mg maintenance dose cohorts, respectively. The Company expects to announce topline data from the ASC30 Phase III program in the third quarter of 2028, with a U.S. FDA New Drug Application (NDA) filing expected by the end of 2028 and a European Medicines Agency (EMA) Marketing Authorisation Application (MAA) filing expected in early 2029. If approved by the respective regulatory authorities in the U.S. and Europe, this will make ASC30 potentially the second oral small molecule GLP-1 approved in the U.S. and Europe after orforglipron. The Company has sufficient cash on hand to support operations into 2029, beyond the expected submission of an NDA and an MAA for ASC30.

Ascletis also announces positive data for its first-in-class once-daily oral small molecule GLP-1/GIP/amylin triple agonist fixed-dose combination (FDC). The addition of this triple agonist FDC gives Ascletis a highly comprehensive and advanced oral small molecule portfolio for the treatment of obesity and other metabolic diseases (Table 1). The portfolio includes a best-in-class Phase III once-daily oral small molecule GLP-1, a first-in-class once-daily oral small molecule GLP-1/GIP dual agonist FDC (the first tirzepatide-like oral small molecule combination), a first-in-class once-daily oral small molecule GLP-1/GIP/amylin triple agonist FDC (the first oral tirzepatide+eloralintide-like small molecule combination), and a first-in-class once-daily oral small molecule eloralintide-like selective amylin receptor agonist (SARA). This comprehensive portfolio places Ascletis in a unique competitive position to significantly expand the population that can be treated with oral agents.

Table 1. Ascletis Once-Daily Oral Small Molecule Portfolio

Notes: FDC: fixed-dose combination; SARA: selective amylin receptor agonist.

Oral Small Molecule Triple Agonist Combination (GLP-1/GIP/Amylin)

Ascletis' first-in-class once-daily oral small molecule triple agonist FDC targeting GLP-1, GIP, and amylin (SARA) (ASC30_48_39FDC) demonstrated a GIPR agonist (ASC48) dose-dependent, statistically significant body weight reduction of up to 15.2% in non-human primates (NHPs) after seven-day treatment. This represents an up to 120% greater relative body weight reduction compared to oral dual agonist FDC targeting GLP-1R and amylin receptor (SARA) (ASC30_39FDC) (Table 2). The data suggest that GIP component (ASC48) is critical to ASC30_48_39FDC triple agonist. ASC30_48_39FDC is the oral small molecule triple agonist equivalent to injectable triple agonist peptides like tirzepatide+eloralintide which demonstrated a 29% reduction in body weight in humans at week 32 in a recently disclosed study ^[1].

Table 2. Once-Daily Oral Administration of ASC30_48_39FDC for Seven Consecutive Days in Non-Human Primates (NHPs)

Notes: FDC: fixed-dose combination; SARA: selective amylin receptor agonist; PO: oral administration; QD: once daily.

Oral Small Molecule Eloralintide-like SARA

Ascletis' first-in-class once-daily oral small molecule eloralintide-like SARA (ASC39) is the second pillar of Ascletis oral small molecule obesity portfolio. ASC39 demonstrated eloralintide-like amylin selectivity and efficacy in preclinical models (Press Release). ASC39 was 40-fold more selective for human amylin 1 receptor (hAMY1R) over human calcitonin receptor (hCTR), which is comparable to the 60-fold greater selectivity of eloralintide in the same preclinical model. Once-daily oral administration of 5 mg/kg ASC39 for six consecutive days in the diet-induced obese rats produced a weight loss of 6.0%, similar to eloralintide at 5.0% (Table 3). ASC30_39FDC, a GLP-1/amylin dual agonist FDC, is expected to be the first FDC of this type to enter the clinic in the fourth quarter of 2026.

Table 3. Once-Daily Oral Administration of ASC39 for Six Consecutive Days Compared to Eloralintide SQ in Obese Rats

Notes: Obese rats: diet-induced obese rats; SQ: subcutaneous; Q3D: once every 3 days; PO: oral administration; QD: once daily.

Oral Small Molecule Dual Agonist Combination (GLP-1/GIP)

Ascletis' first-in-class once-daily oral dual FDC targeting GLP-1R and GIPR (ASC30_48FDC) demonstrated a 10.5% body weight reduction in non-human primates after eight-day treatment. This represents a 52% greater relative body weight reduction compared to ASC30 monotherapy (Press Release). ASC48, a first-in-class oral small molecule GIPR agonist, in a head-to-head in vitro study versus tirzepatide, demonstrated an EC₅₀ of 1 pM in the hGIPR cyclic adenosine monophosphate (cAMP) activation assay, exhibiting greater potency than tirzepatide (EC₅₀ = 3 pM). ASC30_48FDC represents the oral small molecule dual agonist equivalent to injectable dual agonist peptides like tirzepatide. Tirzepatide demonstrated up to a 20.9% reduction in body weight in humans as reported in the tirzepatide package insert^[2].

Table 4. Once-Daily Oral Administration of ASC30_48FDC for Eight Consecutive Days in Non-Human Primates (NHPs)

Notes: FDC: fixed-dose combination; PO: oral administration; QD: once daily.

"Following recent positive end-of-Phase II feedback received from the FDA for ASC30, we are excited to have initiated the global Phase III program of ASC30, the primary pillar of our one-pill once-daily oral small molecule obesity portfolio." said Jinzi Jason Wu, Ph.D., Founder, Chairman and CEO of Ascletis. "ASC30 (GLP-1), ASC48 (GIP) and ASC39 (amylin SARA) are small molecules with different physical-chemical properties. We have overcome multiple challenges during the development of fixed-dose combinations of these molecules. The new data for our first-in-class oral small molecule triple agonist fixed-dose combination (GLP-1/GIP/amylin) reinforces our industry-leading, comprehensive and differentiated portfolio of one-pill once-daily oral small molecules for the treatment of obesity and other metabolic diseases."

About Ascletis Pharma Inc.

Ascletis Pharma Inc. is a fully integrated biotechnology company focused on the development and commercialization of potentially 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 once-daily oral small molecule GLP-1R agonist for chronic weight management and diabetes; ASC30_48 FDC, a once-daily oral small molecule dual agonist, a fixed dose combination of ASC30 (GLP-1R agonist) and ASC48 (GIPR agonist), ASC30_48_39 FDC, a once-daily oral small molecule triple agonist, a fixed dose combination of ASC30 (GLP-1R agonist), ASC48 (GIPR agonist) and ASC39 (amylin receptor agonist (SARA)), ASC39, an eloralintide-like potent selective amylin receptor agonist (SARA) once-daily small molecule, ASC30_39 FDC, a once-daily oral small molecule dual agonist, a fixed dose combination of ASC30 (GLP-1R agonist) and ASC39 (amylin receptor agonist (SARA)), ASC36, an amylin peptide, designed to be administered once monthly to once quarterly subcutaneously and once daily orally, ASC35, a once-monthly subcutaneously administered GLP-1R/GIPR dual peptide agonist, ASC36_35 FDC, a once-monthly subcutaneous triple peptide agonist, a fixed combination of ASC36 (amylin receptor agonist) and ASC35 (GLP-1R/GIPR agonist), ASC37, a GLP-1R/GIPR/GCGR triple peptide agonist, designed to be administered once monthly subcutaneously and once daily orally, and ASC36_37 FDC, a once-monthly subcutaneous quadruple peptide agonist, a fixed dose combination of ASC36 (amylin receptor agonist) and ASC37 (GLP-1R/GIPR/GCGR 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
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Ascletis Pharma Inc. PR and IR Teams
+86-181-0650-9129 (China)
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SOURCE Ascletis Pharma Inc.