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Kreuz, W. et al.

Kreuz, Gill, Rothschild, Manco-Johnson, Lusher, Kellermann, Gorina, Larson,

Full-length sucrose-formulated recombinant factor VIII for treatment of previously untreated or minimally treated young children with severe haemophilia A: results of an international clinical investigation.

The safety and efficacy of a full-length sucrose-formulated recombinant factor VIII product (rFVIII-FS; Kogenate FS; Kogenate Bayer) was evaluated in previously untreated (PUPs) and minimally treated ( MTP) patients with severe haemophilia A (FVIII <2%). Patients (37 PUPs; 24 MTPs) aged 0.1-25.7 months were treated with rFVIII-FS for a cumulative of 9,141 exposure days (EDs), median 114 EDs (range 4-478), on prophylactic or on-demand therapy. Eighty-nine percent of all treated bleeding episodes were successfully treated with 1 (74%) or 2 (15%) infusions. Clinical response to first infusion for each bleeding episode was rated as 'excellent' in 58%, or 'good' in 33%, of all cases. Recombinant FVIII-FS was used in 27 surgical procedures, mainly catheter implantations, which were all conducted without bleeding complications. FVIII recovery mean values (approximately 2%/kg/IU) were as expected for any licensed FVIII concentrate. FVIII neutralizing antibody formation was 15% (9/60). Aside from inhibitor formation, three adverse events were rated as 'at least possibly drug-related' for a total drug-related adverse event rate of 0.14%. No viral seroconversions were observed. Overall, excellent safety and efficacy were demonstrated with rFVIII-FS for therapy of young children with severe haemophilia A.[1]

References

Full-length sucrose-formulated recombinant factor VIII for treatment of previously untreated or minimally treated young children with severe haemophilia A: results of an international clinical investigation. Kreuz, W., Gill, J.C., Rothschild, C., Manco-Johnson, M.J., Lusher, J.M., Kellermann, E., Gorina, E., Larson, P.J. Thromb. Haemost. (2005) [Pubmed]

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