D&D Pharmatech Announces Positive Phase 2 Results for DD01 in MASH with Robust Reductions in Liver Fat Accompanied by Improvements in Liver and Metabolic Health

GYEONGGI-DO, South Korea & GAITHERSBURG, Md.--(BUSINESS WIRE)--D&D Pharmatech, Inc. (D&D) (KOSDAQ: 347850), a clinical-stage biotechnology company developing breakthrough treatments for liver and metabolic diseases, today announced positive results from DD01-DN-02 study, an ongoing 48-week Phase 2 trial designed to evaluate the efficacy and safety of DD01 (a once-weekly dual GLP1/glucagon receptor agonist) in 67 overweight/obese subjects with MASH. DD01 treatment was initiated with two weeks of dosing at 20 mg, followed by the 40mg once-weekly maintenance dose.
Results of a planned 12-week assessment of safety and efficacy revealed DD01 was well tolerated, and the study's primary endpoint was met. Following a 1:1 randomization of 40mg DD01 and placebo, 75.8% of subjects treated with DD01 achieved at least a 30% reduction in liver fat, 72.7% of subjects achieved greater than 50% reduction in liver fat, and 57.6% of subjects achieved greater than 70% liver fat reduction (in each case, with p < 0.0001). DD01 achieved a mean reduction of liver fat content of 62.3% vs 8.3% for placebo at 12 weeks of treatment, and 48.5% of DD01 subjects achieved normalization of liver fat fraction (defined as liver fat fraction of 5% or less by MRI-PDFF). No placebo subject achieved normalization.
Treatment related reductions in Non-invasive markers of MASH progression were used to evaluate subjects at baseline and after 12 weeks of treatment. DD01 treatment was associated with statistically significant improvements in liver stiffness (MRE), pro-C3 levels, and ELF score.
Additional Endpoints
Twelve-week weight loss data were encouraging. While placebo-treated subjects had no significant weight loss, 42.4% of DD01-treated subjects achieving a greater than 5% reduction in weight. Also encouraging were the results of HbA1c testing. While the study population was not selected to be diabetic, following 12 weeks of DD01 treatment, HbA1c reduction was statistically significant compared to placebo.
Safety Results
DD01 was well tolerated. Gastrointestinal (GI) side effects were most common, generally mild to moderate, but transient and manageable. To date, only 3 subjects have discontinued treatment due to GI-related adverse events.
Implications
Seulki Lee, Ph.D., President and Chief Executive Officer of D&D Pharmatech, stated, 'We have remarkably positive results for DD01 after only 12 weeks of treatment in MASH. The magnitude of improvements is equivalent to what has been achieved only after longer-term treatment with FGF and GLP-1 based drugs already validated with histology data in MASH.'
'Considering the combination of liver and metabolic benefits and the favorable tolerability profile, DD01 has the potential to provide patients and physicians with a MASH treatment that is easy to manage, encourages weight loss and is diabetes friendly.'
Mazen Noureddin, MD, MHSc, Professor of Medicine at Houston Methodist Hospital; Co-Chairman of the Board, Summit & Pinnacle Clinical Research; Director, Houston Research Institutes, commented, 'The degree of liver fat reduction with DD01 is striking, with nearly three-quarters of patients achieving at least a 30% reduction and almost half reaching normalization within just 12 weeks. The observed improvement in liver stiffness by MRE, though early, adds further support to the biological activity of this dual GLP-1/glucagon approach, which is designed to act directly on the liver.'
'These consistent MRI-PDFF results provide strong confidence that DD01 has the potential to meet both key regulatory endpoints - MASH resolution and fibrosis improvement - as the program advances. Coupled with favorable metabolic effects and a very low treatment discontinuation rate, DD01 is emerging as a well-differentiated and promising therapy, both within its class and compared to other potent agents in development.'
Additional data will be presented at upcoming medical meetings.
About DD01
DD01 is a once-weekly dual GLP1/glucagon receptor agonist with a half-life of 7-8 days in obese/overweight patients with T2D and MASLD. Following a Phase 1 study that showed DD01 rapidly reduced liver steatosis, improved glucose tolerance, and encouraged weight loss in obese subjects with MASLD and type 2 diabetes, FDA granted DD01 Fast Track Designation for the treatment of MASH. Current Phase 2 results confirm and extend these findings revealing additional benefits in patients with MASH. The effect of DD01 is consistent with its dual-agonist pharmacology. Clinical results show the effects of DD01 are remarkably rapid. DD01 achieves robust results rapidly and with tolerability comparable to other validated MASH treatments.
The GLP1:glucagon potency ratio for DD01 is 11:1. GLP-1R potency is likely an important driver in glucose management for diabetic patients and in weight loss. Importantly, with this ratio, DD01 is clearly also a potent glucagon receptor agonist. Substantial liver fat reduction was observed after only 4 weeks in obese subjects with MASLD (Phase 1). Liver fat reduction by DD01 is clearly not secondary to weight loss at these early timepoints, differentiating it mechanistically from the pure incretin approach. In terms of the balance between efficacy and tolerability, the pharmacokinetics of DD01 are also unique. Good tolerability at clinically active doses is likely aided by very slow absorption (tmax = 6 days) and a long half-life (7-8 days), features which make the onset and rise in DD01 exposure gradual. Peaks associated with poor tolerability and troughs associated with diminished efficacy are avoided. As a result, the need for a lengthy titration period is eliminated and therapeutic levels are reached rapidly. A key differentiator for DD01 is the balanced constellation of clinical benefits afforded by a unique pharmacologic and pharmacodynamic signature. Current data suggest DD01 has the necessary attributes to offer patients and physicians a treatment that is easy to use, supports both liver and metabolic health.
About the DD01-DN-02 Trial
With the support of staff at Summit Clinical Research, the study investigators, and the study participants, the DD01-DN-02 study is fully enrolled and currently ongoing at 12 centers in the U.S. Baseline characteristics were well balanced between both treatment groups with nearly identical mean liver fat fractions (overall mean of 20.7%) and similar body weight (overall mean 99.4 kg) at baseline. Treatment is ongoing and the study includes non-invasive and histologic assessments of MASH resolution and change in fibrosis at 48 weeks. More information about the study is available at www.clinicaltrials.gov under the identifier NCT06410924.
About D&D Pharmatech
D&D Pharmatech is a clinical-stage biopharmaceutical company focused on developing revolutionary medicines for patients with a number of metabolic, fibrotic, and neurodegenerative diseases. DD01 and TLY012 are in development for fibrotic liver disease (MASH and cirrhosis). TLY012 has completed IND-enabling studies and has been shown to slow and even reverse established fibrosis in models of liver cirrhosis, chronic pancreatitis, and systemic scleroderma. Two products are in development for neurodegenerative diseases. NLY02 is a small molecule BBB penetrating kinase inhibitor targeting glial activation. It is a potent inhibitor of neurodegeneration. NLY01 is also a potent inhibitor of glial activation. It acts through the incretin pathway to reduce neuronal loss and slow functional decline in models of Parkinson's, Alzheimer's, and multiple sclerosis. In a recently completed Phase 2 study conducted in >250 Parkinson's patients, 36-week of treatment with NLY01 resulted in a significant reduction in motor function decline (UPDRS III) in ~1/3 of trial subjects. NLY01 appeared to slow the progressive decline in motor function in newly diagnosed patients who were young (<60) and treatment naïve.
D&D Pharmatech's ORALINK technology allows efficient oral uptake of therapeutic peptides. In partnership with Metsera, the company is developing orally active incretin-based peptide drugs for obesity.

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Additionally, the company has research and development sites and commercial offices in North America, Europe, Australia, Latin America and the Middle East. Vertex is consistently recognized as one of the industry's top places to work, including 15 consecutive years on Science magazine's Top Employers list and one of Fortune's 100 Best Companies to Work For. For company updates and to learn more about Vertex's history of innovation, visit or follow us on LinkedIn, Facebook, Instagram, YouTube and X. Special Note Regarding Forward-Looking Statements This press release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, as amended, including, without limitation, (i) statements by Carmen Bozic, M.D., and Michael R. Rickels, M.D., M.S., in this press release, (ii) plans, expectations for, and the potential benefits of zimislecel, (iii) expectations for the Phase 1/2/3 clinical trial for zimislecel, including expectations for the trial to complete enrollment and dosing, and (iv) plans for potential regulatory submissions next year. While Vertex believes the forward-looking statements contained in this press release are accurate, these forward-looking statements represent the company's beliefs only as of the date of this press release and there are a number of risks and uncertainties that could cause actual events or results to differ materially from those expressed or implied by such forward-looking statements. Those risks and uncertainties include, among other things, that data from a limited number of patients may not be indicative of final clinical trial results, that data from the company's research and development programs may not support registration or further development of its potential medicines in a timely manner, or at all, due to safety, efficacy, that timelines for regulatory submissions may be longer than anticipated, and other risks listed under the heading 'Risk Factors' in Vertex's most recent annual report and subsequent quarterly reports filed with the Securities and Exchange Commission at and available through the company's website at You should not place undue reliance on these statements, or the scientific data presented. Vertex disclaims any obligation to update the information contained in this press release as new information becomes available. (VRTX-GEN) Vertex will host an investor event on Friday, June 20, 2025, at 7:15 p.m. CT/8:15 p.m. ET, in Chicago, to discuss the positive zimislecel data in type 1 diabetes. A live webcast of the presentation and Q&A portions can be accessed through the Investor Relations section of Vertex's website at An archived webcast will be available on the company's website.