OSE Immunotherapeutics: Ose Immunotherapeutics Sa Reports on an Oral Presentation from Research Collaboration with the Leon Berard Cancer Center At the American Association for Cancer Research Annual Meeting Held April 25 - 30, 2025

OSE Immunotherapeutics SA reported on an oral presentation from a research collaboration with the renowned Leon Berard Cancer Center in Lyon at the American Association for Cancer Research (AACR) Annual Meeting held April 25 - 30, 2025, in Chicago. Immune checkpoint blockade (ICB) therapies, targeting PD-1, PD-L1, and CTLA-4, have revolutionized cancer treatment by helping the immune system recognize and attack cancer cells more effectively. These therapies offer lasting responses and significant survival benefits across various cancers. However, current biomarkers like PD-L1 expression and tumor mutational burden (TMB) are not always reliable. PD-L1 expression can vary within tumors and between patients, making predictions inconsistent. Therefore, more universally applicable biomarkers are needed to predict patient responses and guide treatment decisions. While RNA sequencing has created detailed gene expression signatures (GES) that describe the tumor environment, their use in everyday clinical practice is limited due to their specificity and lack of widespread adoption. The presentation, entitled "A tumor agnostic composite gene expression signature identifies three groups of patients treated with immune checkpoint blockade with distinct clinical outcome", reported on the development and validation of a robust and tumor-agnostic composite gene expression signature (cGES) that can predict overall survival and progression free survival in cancer patients treated with immune checkpoint blockers (e.g. Anti PD-L1, Anti PD-1 and Anti CTLA-4). This signature could be useful in clinical practice to better stratify patients on risk and potentially guide treatment decisions of multiple cancer types. OSE Immunotherapeutics SA reported on an oral presentation from a research collaboration with the renowned Leon Berard Cancer Center in Lyon at the American Association for Cancer Research (AACR) Annual Meeting held April 25 - 30, 2025, in Chicago. Immune checkpoint blockade (ICB) therapies, targeting PD-1, PD-L1, and CTLA-4, have revolutionized cancer treatment by helping the immune system recognize and attack cancer cells more effectively. These therapies offer lasting responses and significant survival benefits across various cancers. However, current biomarkers like PD-L1 expression and tumor mutational burden (TMB) are not always reliable. PD-L1 expression can vary within tumors and between patients, making predictions inconsistent. Therefore, more universally applicable biomarkers are needed to predict patient responses and guide treatment decisions. While RNA sequencing has created detailed gene expression signatures (GES) that describe the tumor environment, their use in everyday clinical practice is limited due to their specificity and lack of widespread adoption. The presentation, entitled "A tumor agnostic composite gene expression signature identifies three groups of patients treated with immune checkpoint blockade with distinct clinical outcome", reported on the development and validation of a robust and tumor-agnostic composite gene expression signature (cGES) that can predict overall survival and progression free survival in cancer patients treated with immune checkpoint blockers (e.g. Anti PD-L1, Anti PD-1 and Anti CTLA-4). This signature could be useful in clinical practice to better stratify patients on risk and potentially guide treatment decisions of multiple cancer types.