Active clinical trials for "Hemophilia A"

To evaluate the effect of secondary prophylaxis as compared to episodic treatment on bleeding frequency (number of bleeds per year) and on joint damage.

The aim of this study are to assess the efficacy of Biostate® [Study Product (SP)] in subjects with Haemophilia A compare the pharmacokinetics of Biostate® [SP] with the previously marketed product Biostate® (here referred to as Biostate® [Reference Product (RP)]). This study is divided into 3 parts: Part 1: Cross-over pharmacokinetic (PK) component. PK subjects will be randomised to determine the order in which they receive the two study products. This part of the study is double-blinded. Part 2: Efficacy component. All subjects will receive Biostate® [SP] as required to manage their haemophilia condition for an estimated period of 6 months (or minimum of 50 exposure days) to assess efficacy and safety of the product. This part of the study is open-label. Part 3: Repeat pharmacokinetic assessment. Subjects who participated in Part 1 (PK component) will undergo a repeat PK assessment on Day 180 following administration of Biostate® [SP].

To assess efficacy and safety of BeneFix® for prophylaxis in "Short-term" therapy and on demand therapy for all bleeding episodes of subjects with hemophilia B.

The purpose of this study is to determine the effect of 3 doses of ADVATE rAHF-PFM on initial recovery (% increase [IU/dL] per IU/kg infused) and major single-infusion pharmacokinetic parameters. The 3 doses are 15, 30, and 50 IU/kg. Prior to each infusion, subjects will not have received treatment with a factor VIII concentrate for at least 3 days. Blood samples will be drawn within 30 minutes pre-infusion and at 0.25, 0.5, 1, 3, 6, 9, 24, 28, 32 and 48 hours post-infusion. A washout period of at least 3 days, but no more than 30 days between the last blood draw and the next infusion will be observed. During participation, subjects will maintain their preexisting treatment regimens with ADVATE rAHF-PFM or other factor VIII concentrate. A secondary objective is to investigate the relationship between pharmacokinetic parameters at each dose level and the levels of von Willebrand factor ristocetin cofactor activity and von Willebrand factor antigen at baseline.

The purpose of this study is to evaluate whether rAHF-PFM is safe and effective in the treatment of hemophilia A patients undergoing surgery.

To identify the causative mutations in previously untreated patients with hemophilia A enrolled in the ReFacto® clinical safety and efficacy study CTN 93-R833-0XX/C9741-28, using two established hemophilia mutation testing laboratories (one in Europe and one in North America).

To characterize the safety and efficacy of ReFacto AF in treating acute bleeding episodes during prophylaxis treatment, including neoantigenicity.

To characterize the safety and efficacy of rFIX in children less than 6 years of age with severe hemophilia B in the setting of acute bleeding episodes, prophylaxis, and/or surgery. This study will provide an opportunity for systematic observation of treatment with rFIX in children less than 6 years of age regardless of prior FIX treatment. Younger patients exhibit a different pharmacokinetic profile and therefore may respond differently to rFIX infusions when compared with older children and adults. This evaluation will provide data from which recommendations can be made regarding rFIX dosing and treatment of these patients. Surveillance for certain observations that have been made in patients treated with rFIX in the clinical and postmarketing setting will be performed, including inhibitor development, thrombogenicity, FIX recovery/lack of effect, allergic-type manifestations, and RBC agglutination. Comparisons will be derived from published reports and communications describing experience with other FIX products and protein therapeutics in general.

In this postmarketing study, the safety of Nonafact® (human coagulation factor IX) is evaluated in previous treated and untreated patients with severe, moderate or mild haemophilia B.

The ability of a new recombinant porcine coagulation factor VIII, B-domain deleted (called "OBI-1"), to control the non-life- or limb-threatening bleeding episodes patients with hemophilia A commonly develop is being evaluated. Patients with congenital hemophilia A and a low-titer (<20 Bethesda units [Bu]) inhibitory antibody to OBI-1, who meet the inclusion/exclusion criteria, will receive OBI-1 to treat their soft tissue or joint bleeding episode. At least the first two treatment episodes will be performed in the controlled setting of the hemophilia center/clinic/office, where any side effects can be observed. If the patient continues to meet the inclusion/exclusion criteria, has had no serious or severe adverse reactions to OBI-1, and has been in a home care program, the investigator may permit the patient to self-administer OBI-1 at home to treat subsequent bleeding episodes. The study will continue at least until 12 or more patients have received at least 24 treatment episodes in the aggregate.