View clinical trials related to Hemophilia A.
Filter by:Randomized clinical trial to assess the efficacy of a treatment protocol applied fascial therapy in patients with hemophilic arthropathy ankle, oriented to know and describe the observed differences on the dependent variables: range of motion, pain and physical condition. At the same time, the study will determine whether there are adverse effects or bleeding complications as a result of applied physiotherapy treatment.
To evaluate the prevalence of subclinical arthropathy in children with severe hemophilia undergoing a prophylaxis regimen and without evidence of target joints, using a validated ultrasound scoring method.
In the context of hemophilia, it is well know that the level of factor VIII alone does not reflect the clinical phenotype of the patients in an accurate way. At equal factor VIII levels, certain patients will bleed more than others. The thrombin generation test (TGT) is a test that seems to provide a better prediction of the overall hemostatic status of an individual patient. In a previous study, the investigators have established normal reference values of the thrombin generation curve in children aged 6 months to 16 years and adults. The goal was to evaluate the use of this test in different clinical contexts and in severe hemophilia patients in particular. A pilot study showed that the patients having a thrombin generation <150 had a severe phenotype, whether those who received an appropriate prophylaxy had a thrombin generation superior to 150. Moreover, the investigators now have access to a software tool that allows them to individually determine the pharmacokinetic profile of the factor VIII injected to each patient. The factor VIII concentration is measured at injection and 30 minutes, 1 hour, 2 hours and 24 hours afterwards. The introduction of these concentrations in the software allows to obtain the half-life of factor for a given patient, the maximum peak, and the minimum factor level (though level). The injected dosis might be sufficient (disappearance of substantial diminution of the bleedings) or unsufficient (persisting bleeding) for a given patient. This study aims: - to measure the pharmacokinetic profile of factor VIII by two different methods, the time-based method and the chromogenic method - to correlate the results with the TGT results obtained at the same time points and determine which method gives the best correlation - to link the clinical symptomatology (improved symptomatology or not) with the TGT results - to determine which minimal TGT result is linked to a minimal bleeding rate - to adapt the prophylactic dosis of the patient in a personalized way.
Recombinant factor VIII Fc (rFVIIIFc) and recombinant factor IX Fc (rFIXFc) are extended half-life coagulation factors approved by Health Canada in 2014 for the treatment of severe hemophilia A and B, respectively. The objectives of this observational study is to describe the change in annual factor consumption, clinical and patient-reported outcomes for patients who switch from recombinant factor VIII (rFVIII) and recombinant factor IX (rFIX) to rFVIIIFc/ rFIXFc in Canada, and to explore clinicians' and patients' reasons for switching or not switching.
This non-randomized, multicenter, open-label, Phase III clinical study will evaluate the efficacy, safety, and pharmacokinetics of emicizumab administered subcutaneously initially once weekly (QW) in pediatric participants with hemophilia A with FVIII inhibitors. This study will open two additional non-randomized cohorts to investigate once every 2 weeks (Q2W) and once every 4 weeks (Q4W) regimens in pediatric participants.
Haemophilic arthropathy is one of the major complications of severe haemophilia. In order to maintain plasma clotting factor activity levels above 1% and avoid spontaneous joint bleeds and other serious bleeding events, prophylactic factor replacement therapy is used. Because of the high cost and limited availability of clotting factor concentrates, dosing is a crucial issue for prophylaxis therapy. Several studies reported a better correlation between clinical bleeding tendency of patients with haemophilia and thrombin generation assay results compared to FVIII/FIX levels. However there is no specific data showing that thrombin generation may be a better indicator of the clinical efficacy of prophylaxis compared to the conventional FVIII measurement. The main objective of this open, multicentre, prospective study is to compare trough thrombin generation capacity and FVIII levels in severe haemophilia patients and compare these two laboratory results with: - the number of spontaneous haemarthroses and other spontaneous serious bleeds occurred in the last 6 months - the number of additional FVIII units used in the last 6 months This project requires no change in term of type of treatment : During the study, each patient will be treated by his usual clotting factor at the usual regimen (frequency and dosage). The clinical outcome with the usual prophylaxis regimen will be correlated to TGA results
This study evaluates the clinical impact of a progressive resistance training program in adults patients with haemophilia
The World Federation of Hemophilia (WFH) is conducting the pilot phase of an international, observational, World Bleeding Disorders Registry (WBDR). This pilot phase will assess the feasibility of conducting an expanded WBDR to more centres with a more comprehensive case report form, around the world.
The purpose of this study is to: - 1. To evaluate the tolerability and safety of infusing reduced volume Factor Eight Inhibitor Bypassing Activity (FEIBA) at the standard infusion rate of 2 U/kg/min - 2. To evaluate the tolerability and safety of infusing reduced volume FEIBA at increased rates of 4 and 10 U/kg/min, in comparison to the standard rate of 2 U/kg/min at the regular volume
This is an investigator-initiated, industry-funded, multi-centre, international study that will be carried out prospectively at hemophilia treatment centres across Canada, the Czech Republic and Australia with SickKids as the coordinating site. The study will use a central laboratory not directly affiliated with any of the participating sites. Enrollment target is 50 participants, both adult and pediatric with severe hemophilia A receiving Advate, who will each complete a 2-point and 6-point pharmacokinetic (PK) sampling. The main aim is to compare the results of a 2 sample PK using clinically practical time points and myPKFiT™ (a web-based, population PK Bayesian tool) to a 6 sample population PK to determine whether the results obtained are in good agreement.