OSE Immunotherapeutics Reports Positive Topline Results of TEDOVA Phase 2 Trial with Tedopi® in Recurrent Ovarian Cancer Topline results to be presented by Alexandra Leary, MD, PhD, on May 30, 2026, at the 2026 Annual Meeting of the American Society of Clinical Oncology (ASCO) in Chicago OSE Immunotherapeutics to host a KOL webcast on June 10, 2026 Nantes, France, May 22, 2026 – 7:30am CET - OSE Immunotherapeutics SA (ISIN: FR0012127173; Mnemo: OSE), a clinical-stage biotech company dedicated to developing first-in-class therapies in immuno-oncology and immuno-inflammation, today announced the release of the abstract selected for an oral presentation at the upcoming ASCO 2026Annual Meeting, unveiling topline results from the TEDOVA/GINECO-OV244b/ENGOT-ov58 academic, international, Phase 2 trial sponsored by ARCAGY-GINECO and evaluating Tedopi® (OSE2101), with or without pembrolizumab, as a maintenance treatment in patients with platinum-sensitive recurrent ovarian cancer (PSOC). Alexandra Leary, MD, PhD, Deputy Head of the Department of Medical Oncology at Gustave Roussy (Paris, France), oncologist specialising in gynaecological cancers, Chair of the GINECO group and Lead Investigator of the TEDOVA Phase 2 clinical trial of Tedopi®, commented: “Ovarian cancer (OC) patients treated with platinum sensitive relapse post bevacizumab and PARP-inhibitors represent an unmet medical need with a progression free survival (PFS) of less than 3 months post platinum-based chemotherapy.