alexa Use of albumin fusion technology to prolong the half-life of recombinant factor VIIa.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Genetic Syndromes & Gene Therapy

Author(s): Schulte S

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Abstract A significant proportion of patients with haemophilia A develop inhibitors to administered factor VIII (FVIII) and require therapy with bypassing agents such as activated factor VII (FVIIa) or activated prothrombin complex concentrates. NovoSeven is a commercially available recombinant FVIIa (rFVIIa) with a very short half-life of approximately 2.4 hours. As a result, patients generally require multiple, frequent infusions for the management of bleeding episodes. Thus, there is growing interest in extending the circulating half-life of coagulation factors through the use of innovative drug delivery and formulation technologies. One such approach uses albumin fusion technology in which human albumin is genetically fused to the C-terminus of rFVIIa via a flexible glycine serine linker. The properties of this rFVIIa fusion protein (rVIIa-FP) have recently been examined in pre-clinical studies. Results from these investigations demonstrate the feasibility of this approach, which successfully extended the half-life and biological activity of rFVIIa without compromising haemostatic efficacy. These data suggest that rVIIa-FP may be a promising therapy for the treatment of haemophilia patients with inhibitors and warrants further investigation in clinical trials. This article was published in Thromb Res and referenced in Journal of Genetic Syndromes & Gene Therapy

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