|Type||Single-chain variable fragment|
|Chemical and physical data|
|Molar mass||69558.48 g·mol−1|
|(what is this?)|
Oportuzumab monatox (proposed INN, trade name Vicineum) is an antineoplastic. Chemically, oportuzumab is a single chain variable fragment of a monoclonal antibody which binds to epithelial cell adhesion molecule (EpCAM, the tumor-associated calcium signal transducer 1). Oportuzumab is fused with Pseudomonas aeruginosa exotoxin A (which is reflected by the monatox in the drug's name).
The drug was originally developed by Canadian-based Viventia Bio Inc. The company was acquired by Cambridge(MA)-based Eleven Biotherapeutics in 2016 which then changed its name to Sesen Bio. In 2019 Sesen Bio reported updated, preliminary primary and secondary endpoint data from the company's Phase 3 VISTA trial further supporting the strong benefit-risk profile of Vicineum for the potential treatment of patients with high-risk, bacillus Calmette-Guérin(BCG) unresponsive, non-muscle invasive bladder cancer (NMIBC). The Company applied for approval of Vicineum by the United States Food and Drug Administration und the European Medicines Agency.
- International Nonproprietary Names for Pharmaceutical Substances (INN, prepublication copy), World Health Organization.
- Alex Keown: Eleven Biotherapeutics Changes Name to Sesen Bio to Reflect Commitment to Oncology Therapies. Biospace.com, May 16, 2018.
- Sesen Bio Reports Positive, Preliminary Data Update from Phase 3 VISTA Trial for High-Risk Non-Muscle Invasive Bladder Cancer. Businesswire.com, August 08, 2019
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