Baxter commences BAX 855 Phase I trial in hemophilia A

Baxter International Inc. (NYSE: BAX) today announced the dosing of the first patients in a Phase I clinical trial of its lead investigational candidate, BAX 855, a longer-acting (PEGylated) form of a full-length recombinant factor VIII (rFVIII) protein. BAX 855 is based on Baxter's ADVATE [Antihemophilic Factor (Recombinant) Plasma/Albumin-Free Method] full-length rFVIII molecule and plasma/albumin-free (PAF) manufacturing process.

The Phase I trial is a prospective, open-label study that will assess the safety, tolerability and pharmacokinetics of BAX 855 in previously-treated patients aged 12 years or older with severe hemophilia A. When used for prophylaxis, Baxter's ADVATE requires patients to infuse every two to three days to reduce the occurrence of bleeding episodes. This Phase I trial is the first step in assessing whether BAX 855 can be infused less frequently.

"This trial is designed to provide new insights about our investigational longer-acting FVIII molecule, BAX 855, with the ultimate goal of improving care for patients living with hemophilia A," said Prof. Hartmut J. Ehrlich, M.D., vice president of global research and development in Baxter's BioScience business. "The Phase I results will serve as the foundation for advancing this important program through clinical development and determining whether BAX 855 can offer a treatment regimen requiring fewer infusions than ADVATE."