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  • Title: An open clinical study assessing the efficacy and safety of Factor IX Grifols, a high-purity Factor IX concentrate, in patients with severe haemophilia B.
    Author: Lissitchkov T, Matysiak M, Zawilska K, Gercheva L, Antonov A, Montañes M, Paez A.
    Journal: Haemophilia; 2010 Mar; 16(2):240-6. PubMed ID: 20015218.
    Abstract:
    Factor IX Grifols is a new high-purity plasma-derived FIX concentrate with two specific pathogen elimination steps. Until this study was performed, there were no detailed reports with an adequate number of patients on the clinical evaluation of this product. To determine the efficacy and safety of Factor IX Grifols for replacement therapy in previously treated patients with severe haemophilia B, this open, multicentre and non-randomized study included 25 male subjects over the age of 12 with severe haemophilia B. Patients underwent prophylaxis and treatment of bleeding episodes with Factor IX Grifols for 1 year. The clinical efficacy and safety of this product were assessed. Forty percent of the patients were children and adolescents (12-17 years old). During the 12 months follow-up, 1 446 000 IU of Factor IX Grifols were administered in 961 infusions (range 12-83 infusions per patient): 31% for prophylaxis and 69% for bleeding episodes. Only five major bleeding events were reported in two patients. These haemorrhages were successfully treated with a mean of 2900 IU per bleed (range 1500-4000 IU), and 1-3 infusions per bleed. The average time elapsed from the first infusion to resolution of bleeding was 43 h (median). Overall, haemostasis was rated as excellent or good by the investigator in 96% of the infusions. No product-related adverse events were reported. Factor IX Grifols is an effective and safe Factor IX concentrate and can be considered as a first line option for replacement therapy in haemophilia B patients.
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