• Data reflect an additional year of follow-up from the 123-patient cohort in the Phase 1b study

Agenus Inc. (NASDAQ:AGEN), a leader in immuno-oncology innovation, today announced that three-year survival data from the Phase 1b C-800-01 study of botensilimab (BOT), an Fc-enhanced multifunctional anti–CTLA-4 antibody, plus balstilimab (BAL), an anti–PD-1 antibody, in patients with microsatellite stable (MSS) metastatic colorectal cancer (mCRC) without active liver metastases will be presented at the European Society for Medical Oncology Gastrointestinal Cancers Congress 2026, taking place July 1–4, 2026, in Munich, Germany.

The poster presentation, delivered by Benjamin L. Schlechter, M.D., of Dana-Farber Cancer Institute, will provide updated findings from the fully enrolled cohort of 123 patients, including longer-term follow-up of durability of response and overall survival. The presentation follows the two-year overall survival data presented by Dr. Schlechter at ESMO-GI 2025 and reflects an additional year of follow-up from the Phase 1b study.