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    In: Transfusion, Wiley, Vol. 57, No. 4 ( 2017-04), p. 1066-1071
    Abstract: Nonacog alfa, the recombinant Factor IX (F IX) used for the treatment of hemophilia B, was approved in Europe in 1998. A reformulated version was approved for European use in 2007. STUDY DESIGN AND METHODS This postmarketing study, as recommended by the risk management plan, was conducted to confirm the safety of reformulated nonacog alfa in a usual care setting in France. This open‐label, noninterventional, prospective, longitudinal postmarketing study comprised 19 French hemophilia centers. Patients with hemophilia B receiving reformulated nonacog alfa for prophylaxis or on‐demand treatment were followed up on usual care schedule. RESULTS A total of 58 subjects were enrolled, of whom 29 (50%) were less than 18 years of age. Hemophilia was severe (baseline F IX activity  〈  1%) in 47 (81%) patients. All subjects except one were already treated with reformulated nonacog alfa before enrollment. One subject was receiving reformulated nonacog alfa as immune tolerance induction at time of enrollment. At enrollment, treatment regimen was mainly prophylactic in subjects less than 18 years and on‐demand in subjects 18 years or older. Median duration of follow‐up in the survey was 3.3 (2.3‐3.8) years. The median annualized bleeding rate was 3.9 (1.5‐5.2) for prophylaxis regimen and 12.2 (3.9‐22.1) for on‐demand regimen. One subject, a previously untreated patient, developed F IX inhibitors during follow‐up. No allergic reaction, no blood cell agglutination, no lack of efficacy or recovery, and no thrombotic events were reported. CONCLUSION Reformulated nonacog alfa was shown to be safe in a usual care setting.
    Type of Medium: Online Resource
    ISSN: 0041-1132 , 1537-2995
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2017
    detail.hit.zdb_id: 2018415-3
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