AGMB-129

— AGMB-129 hit all primary and secondary endpoints in interim read-out from 44 patients after 12 weeks treatment — — Detailed interim STENOVA results to be presented at future scientific conference — — STENOVA clinical trial on track to report full results in the fourth quarter of 2025 — — Open-label extension study initiated — ANTWERP, Belgium I March 10, 2025 I Agomab Therapeutics NV (‘Agomab’) today announced positive interim results from 44 patients completing treatment in the ongoing STENOVA 1 Phase 2a clinical trial for AGMB-129, an oral gastro-intestinal (GI)-restricted small molecule inhibitor of ALK5 (TGF-β RI or ALK5) for the potential treatment of Fibrostenosing Crohn’s Disease (FSCD). STENOVA is a randomized, double-blind, placebo-controlled study in a total of 90 patients with symptomatic FSCD. Patients are randomized to receive one of two doses of AGMB-129 or placebo for 12 weeks on top of standard of care, including biologics. The multi-center study is global with investigational sites in the USA, Canada and Europe. The primary endpoints are the safety and tolerability of AGMB-129 in FSCD patients. Secondary endpoints include the pharmacokinetics and target engagement at the site of the ileal strictures as measured through transcriptomics. All primary and secondary endpoints were met. The company has also initiated the open-label treatment extension of the STENOVA study with AGMB-129. Study participants who have completed the double-blind 12-week treatment period are eligible to participate and can receive treatment for up to an additional 48 weeks. “The positive interim data for the STENOVA Phase 2a clinical trial represent a significant milestone for this program, and we look forward to presenting the detailed results at a scientific conference in the near-term,” said Philippe Wiesel, Chief Medical Officer at Agomab Therapeutics . “We want to thank all patients and investigators for participating in this trailblazing study, which aims to address the high unmet medical need that exists in the field of Fibrostenosing Crohn’s disease.” AGMB-129 is an investigational drug and not approved by any regulatory authority. Its efficacy and safety have not been established. About AGMB-129 AGMB-129 is an oral, small molecule GI-restricted inhibitor of ALK5 (or TGF-β RI) currently in clinical development for the treatment of Fibrostenosing Crohn’s Disease (FSCD). TGF-β is a major driver of fibrosis. AGMB-129 is specifically designed to inhibit ALK5/TGF-β in the GI-tract. Rapid first-pass metabolism in the liver prevents clinically relevant systemic exposure, potentially delivering an improved safety profile over systemically available inhibitors in this class. In a Phase 1 trial in healthy subjects, single- and multiple-dose AGMB-129 was generally well-tolerated at all doses tested. In addition, the trial showed high local exposure to AGMB-129 in the ileum but no clinically relevant systemic exposure, demonstrating that the GI restricted mechanism may operate efficiently in humans. Fibrostenosing complications occur in nearly 50% of Crohn’s disease patients and are the leading cause of bowel resection surgery, however there are no approved specific therapies for FSCD. AGMB-129 has received U.S. FDA Fast Track Designation. About Agomab Agomab is focused on achieving disease modification by modulating inflammation and fibrosis in chronic indications such as Fibrostenosing Crohn’s Disease and Idiopathic Pulmonary Fibrosis. We do this by targeting biologically validated pathways, including Transforming Growth Factor β, and by applying specialized capabilities in organ-restricted small molecules. With a differentiated clinical pipeline across several fibrotic disorders, end-to-end research and development capabilities, a proven track-record and a strong investor base, Agomab is building a transformational company with the aim to have a real impact on patients. 1 Study Details | STENOVA – A Study to Evaluate Safety, Tolerability, PK and PD of AGMB-129 in Patients With Fibrostenotic Crohn’s Disease | ClinicalTrials.gov SOURCE: Agomab

The trial showing changes in mRNA gene expression in biopsies of the ileum, part of the small intestine that can be constricted as a part of fibrostenosing Crohn\'s disease.\n Agomab’s ALK5 inhibitor has proven its ability to target the correct part of the intestine in a phase 2 trial of fibrostenosing Crohn’s disease.The STENOVA study saw 90 patients with the condition receive one of two doses of the therapy, dubbed AGMB-129, or placebo for 12 weeks on top of standard of care. An interim readout has shown the study hit its primary endpoints of showing that AGMB-129 was safe and well tolerated, Agomab said in a March. 10 release.The trial also hit its secondary endpoints, which included showing changes in mRNA gene expression in biopsies of the ileum, part of the small intestine that can be constricted as a part of fibrostenosing Crohn\'s disease. In addition, the study hit its pharmacokinetics endpoints as measured in the amount of metabolites in plasma. Agomab is holding onto the interim data until a future conference, the Belgian biotech said, with full results from the study then expected in the fourth quarter.“The positive interim data for the STENOVA phase 2a clinical trial represent a significant milestone for this program, and we look forward to presenting the detailed results at a scientific conference in the near-term,” Agomab’s Chief Medical Officer Philippe West said.The study was financed by a $100 million series C that the Antwerp, Belgium-based biotech hauled in back in October 2023.Agomab launched in 2019 to take forward the work of Paolo Michieli, Ph.D., who has researched hepatocyte growth factor (HGF) at the University of Torino for more than two decades. HGF plays a role in cell functions such as proliferation, survival and differentiation and can promote wound healing and tissue regeneration.In 2021, Agomab bought Origo Biopharma, adding small-molecule drug candidates that target the transforming growth factor beta, including AGMB-129. The company’s hopes are that AGMB-129 can be used in combination with other Crohn’s drugs to help tamp down the disease and stop the scarring in those with fibrostenotic disease.This could be a sizable market—around 800,000 people are estimated to have Crohn’s in the U.S., around half of whom will be impacted by the fibrostenotic form.