Overview

At Sesen Bio, we are committed to saving and improving the lives of patients with cancer. We are a late-stage clinical company advancing targeted fusion protein therapeutics for the treatment of patients with cancer. Our lead program, Vicineum™, also known as oportuzumab monatox, has completed the follow-up stage of a Phase 3 clinical trial in the US for the treatment of non-muscle invasive bladder cancer (NMIBC). Vicineum is a locally administered targeted fusion protein composed of an anti-EpCAM antibody fragment tethered to a truncated form of Pseudomonas Exotoxin A. This fusion protein design is believed to decrease the risk of toxicity to healthy tissues, thereby improving its safety.