Lund, Sweden – 13 October 2025 – Alligator Bioscience (Nasdaq Stockholm: ATORX), a clinical-stage biotechnology company developing tumor-directed immuno-oncology antibody drugs, today announces the upcoming presentation of data from the Phase 1 REACtiVe-2 trial (NCT05650918) at the ESMO Congress 2025, showcasing the immunologic and clinical effects of mitazalimab in combination with dendritic cell therapy in patients with metastatic pancreatic cancer.
The investigator-sponsored trial, conducted at Erasmus MC Cancer Institute, demonstrated that the combination of mitazalimab and Amphera’s dendritic cell vaccine MesoPher was safe and well-tolerated, with enhanced systemic and local immune responses. Half of the patients achieved stable disease after three administrations, with post-treatment biopsies revealing increased tumor-infiltrating T cells and reduced collagen deposition.
Title: REACtiVe-2: Phase I Evaluation of Dendritic Cell Vaccination and Agonistic CD40 Therapy Following (m)FOLFIRINOX in Metastatic Pancreatic Cancer
Presentation number: 2218P
Date and time: Sunday, 19 October, 12 p.m.-12:45 p.m. CEST.
“These clinical data clearly demonstrate the immune-stimulatory capacity of mitazalimab in patients with pancreatic cancer. They provide important mechanistic support for mitazalimab’s mode of action as a tumor-directed CD40 agonist,” said Søren Bregenholt, CEO of Alligator Bioscience. “As we actively pursue out-licensing opportunities, results such as these reinforce mitazalimab’s value proposition in immuno-oncology and its potential in novel combination therapies.”