Hemophilia Clinical Trial
Official title:
ATLAS-PPX: an Open-label, Multinational, Switching Study to Describe the Efficacy and Safety of Fitusiran Prophylaxis in Patients With Hemophilia A and B Previously Receiving Factor or Bypassing Agent Prophylaxis.
Primary Objective: To characterize the frequency of bleeding episodes (BE) while receiving fitusiran treatment, relative to the frequency of bleeding episodes while receiving factor concentrate or bypassing agent (BPA) prophylaxis. Secondary Objectives: - To characterize the following while receiving fitusiran treatment, relative to receiving factor or BPA prophylaxis: - the frequency of spontaneous bleeding episodes - the frequency of joint bleeding episodes - health related quality of life (HRQOL) in participants greater than or equal to (>=) 17 years of age - To characterize the frequency of bleeding episodes during the onset and treatment periods in participants receiving fitusiran. - To characterize the safety and tolerability of fitusiran. - To characterize the annualized weight-adjusted consumption of factor/BPA while receiving fitusiran treatment, relative to receiving factor or BPA prophylaxis.
The estimated total time on study, inclusive of Screening, for each participant was up to 15 months for participants who were enrolled in the extension study except for participants in the subgroup of Cohort A, for whom it was up to 9 months. The estimated total time on study was up to 21 months (up to 15 months in participants in the subgroup of Cohort A) in participants who did not enroll in the extension study due to the requirement for an additional up to 6 months of follow-up for monitoring of antithrombin (AT) levels. ;
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