Evaxion A/S has announced new biomarker and immune data from its phase 2 trial of EVX-01, an AI-designed personalized cancer vaccine. The data were presented at the Society for Immunotherapy of Cancer $(SITC)$ 2025 Annual Meeting. The phase 2 trial evaluates EVX-01 in combination with KEYTRUDA® (pembrolizumab) in patients with advanced melanoma. According to Evaxion, the new results include analyses of immune responses, with longitudinal blood samples collected to characterize changes in T-cell populations. In certain patient subsets, clinical responses were associated with rapid and sustained induction of EVX-01-specific T-cells. These findings build on two-year clinical efficacy data previously presented at the European Society for Medical Oncology 2025 congress.