Sesen Bio Inc is a late-stage clinical company advancing targeted fusion protein therapeutics for the treatment of patients with cancer. The company's product candidate, Vicineum, also known as VB4-845, is a locally-administered targeted fusion protein composed of an anti-epithelial cell adhesion molecule antibody fragment tethered to a truncated form of Pseudomonas exotoxin A for the treatment of non-muscle invasive CIS of the bladder in patients previously treated with adequate or less than adequate BCG.
