The treatment protocol is based on the results of a Phase I trial of BAX 855, assessing its safety, tolerability and pharmacokinetics. That trial found that the half-life (measuring the duration of activity of the drug in the body) of the investigational compound was approximately 1.5-fold higher compared to ADVATE. An extended half-life was achieved in all patients in the study using BAX 855, no patients developed inhibitors to either the base molecule, BAX 855 or to PEG, and no patients had allergic reactions. No treatment-related or serious adverse events were reported, and no patients withdrew from the study due to adverse events.

BAX 855 is built from the same native FVIII protein used in the production of ADVATE, and employs proprietary PEGylation technology from Nektar Therapeutics (NASDAQ:NKTR) designed to extend the duration of activity of proteins. PEGylation technology has been widely used in various approved treatments.

About ADVATE

ADVATE [Antihemophilic Factor (Recombinant) Plasma/Albumin-Free Method] is indicated for the control and prevention of bleeding episodes in adults and children (0-16 years) with hemophilia A. ADVATE is also indicated for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in adults and children (0-16 years) with hemophilia A. ADVATE is not indicated for the treatment of von Willebrand disease.

ADVATE has a demonstrated efficacy profile and a low rate of inhibitor development. ADVATE is a full-length (derived from the complete FVIII gene) recombinant FVIII product that is processed without any blood-based additives. Because no blood-derived components are added at any stage of the manufacturing process, the potential risk of transmitting pathogens that may be carried in blood-based additives is eliminated. There have been no confirmed reports of transmission of HIV, HBV or HCV with rFVIII treatments.

ADVATE is approved in 60 countries worldwide including the United States, Canada, 27 countries in the European Union, Argentina, Australia, Brazil, Chile, China, Colombia, Croatia, Ecuador, Hong Kong, Iceland, Iraq, Japan, Kuwait, Macau, Malaysia, Mexico, New Zealand, Norway, Panama, Puerto Rico, Serbia, Singapore, South Korea, Suriname, Switzerland, Taiwan, Tunisia, Turkey, Ukraine, Uruguay, and Venezuela.

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