Active clinical trials for "Hemophilia A"

This study is conducted in Asia. The aim of this study is to evaluate the safety and efficacy of NovoEight® (recombinant factor VIII) in patients with haemophilia A in Japan in the setting of routine clinical practice.

To obtain evidence of content validity and reliability of the Colorado Adult Joint Assessment Scale (CAJAS), a clinician-reported outcome (ClinRO) measure, as adapted for use in a population of adults with moderate to severe hemophilia A treated with coagulation factor VIII (FVIII) therapy as secondary prophylaxis or episodic treatment.

This study is conducted in Europe and Asia. The aim of this observational study is to monitor antibody formation towards the room temperature stable formulation of NovoSeven® (activated recombinant human factor VII).

This trial is conducted in Africa and Asia. The aim of this study is to evaluate the efficacy of home treatment of joint bleeds (haemarthrosis) with NovoSeven® (activated recombinant human factor VII) in patients with haemophilia A and B patients with inhibitors.

To determine the prevalence of hepatitis delta virus (HDV) in a large cohort of hemophiliacs and to elucidate the role of HDV in the development and progression of liver disease in this population.

The original Joint Outcome Study (JOS) enrolled 65 boys with hemophilia from 16 sites nationally. The subjects were randomized to one of two arms (prophylaxis or an enhanced episode-based treatment)and were followed prospectively until the age of six. At the age of six, the proportion of children on each treatment arm who developed bone or cartilage damage as determined by X-Ray or MRI was assessed. In addition, the function and structure of the index joints (defined as knees, ankles, and elbows)were evaluated using a physical assessment scale specially designed for preschool children. The specific aim of the Joint Outcome Study Continuation (JOSC) is to extend observations of the children participating in the original JOS until the subjects reach the age of 18 years in order to determine the natural history of joint development in hemophilia and the impact of primary or secondary prophylaxis on the prevention, limitation, or reversal of hemophilic arthropathy. In addition, plasma and DNA will be collected and banked yearly for current and future studies of biomarkers and predictors of hemophilia outcomes.

The purpose of this observational study is to describe the incidence of adverse events among patients treated with Refacto AF in usual health care settings in Germany and Austria.

To provide safety and effectiveness information of BeneFIX during the post-marketing period as required by Korea FDA regulations, to identify any potential drug related treatment factors in Korean population including: 1) Unknown adverse reactions, especially serious adverse reactions; 2) Changes in the incidences of adverse reactions under the routine drug uses. 3) Factors that may affect the safety of the drug 4) Factors that may affect the effectiveness of the drug

The purpose of this study is to investigate the effectiveness and safety of treatment with ReFacto under conditions of routine therapy. Furthermore a continuous benefit/risk assessment will be done.

Hemophilia is a rare X-linked bleeding disorder responsible for deficiency of coagulation factor VIII (FVIII) or IX (FIX). The main clinical manifestation is increased bleeding throughout the life which is directly correlated to the severity of the hemophilia, either mild (FVIII/FIX: 6-40), moderate (FVIII/FIX: 1-5%), or severe (FVIII/FIX<1%). Thanks to new therapies and long-term specialized follow-up by hemophilia treatment centers (HTCs), the life expectancy of patients with hemophilia (PWH) has improved considerably, even reaching that of the general population (1). Healthcare professionals are so more confronted to PWH with age-related pathologies, in particular cardiovascular pathologies such as atrial fibrillation, acute coronary syndromes or thromboembolic events (arterial or venous). It is now recommended in PWH that an anticoagulant treatment (AC) be prescribed as in the general population (2,3,4). The recently published COCHE study demonstrated a significantly increased risk of bleeding in PWH receiving antithrombotic treatment. This bleeding risk depended significantly on the type of antithrombotic treatment, which was higher for anticoagulant vs antiplatelet drugs, on basal levels of FVIII or FIX, and on the HAS-BLED score (5). Nowadays in the general population, among anticoagulant drugs, direct oral anticoagulants (DOACs) are preferred to vitamin K antagonist (KVA), thanks to their reduced risk of bleeding particularly intracerebral bleeding and better anticoagulant stability over time (6). However, we do not yet know precisely whether DOACs could occupy the same place in the PWH population because of the lack of evidence-based data due to the very small number of these patients, although some authors already recommend them over KVA. The KADOAH study was therefore set up to try to provide initial elements for future recommendations. Its main objective was to compare the level of bleeding risk of PWH treated with VKA vs DOACs.