Abstract
Turoctocog alfa (NovoEight®) is a new recombinant factor VIII (rFVIII) with a truncated B domain and a high degree of tyrosine sulphation, similar to plasma-derived FVIII products. The manufacturing process includes double nanofiltration with a 20-nm pore size and immunoaffinity chromatography with monoclonal F25 anti-FVIII antibodies. Treatment with turoctocog alfa can be monitored with both one-stage and chromogenic substrate assays without a product-specific laboratory standard. In total, 213 previously-treated patients with severe haemophilia A participated in the pivotal part of the clinical trial programme guardianTM. The median annualised bleeding rate during turoctocog alfa prophylaxis was 3.7 and 3.0 in adolescents/adults and children, respectively, with marked differences between participating countries. The success rate for the treatment of breakthrough bleeds was 85% (adults/adolescents) and 94% (children). A total of 41 surgical procedures (15 major, 26 minor) were performed in 33 patients, with a successful haemostatic response reported in all cases. No patient developed confirmed inhibitors in any of the trials.
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