Active clinical trials for "Hemophilia A"

MOTHIF II is a non-interventional, multicenter, retrospective, observational data collection in seven French Haemophilia Treatment Centers of the BERHLINGO network. In the context of the arrival of new extended half-life products, the MOTHIF II study aims to describe the changes in therapeutic management of patients with hemophilia A & B, following the provision of FVIII and FIX extended half-life factors in France; it will also permit to carry out a budget impact analysis to quantify the economic significance of this new era.

This study programme aims to examine the real-world experience and impact of gene therapy in a diverse community of people and families affected by haemophilia who have been or will be exposed to gene therapy.

This study is to generate qualitative data to evaluate the impact of frequency of FVIII infusions on patients' satisfaction with treatment and their quality of life.

Haemophilia is a rare and serious congenital defect of blood coagulation due to a genetic mutation on a sexual chromosome. It affects quasi-essentially the men and it is responsible for bleeding. There are two types of haemophilia: Haemophilia A, (85 % of cases), due to a factor VIII (FVIII) deficiency and Haemophilia B (15 % of cases) due to factor IX (FIX) deficiency. According to the intensity of the defect, there are three forms of haemophilia: severe (FVIII or FIX lower than 1 %), moderate (factor level between 1 and 5 %), minor (factor level between 5 and 40 %). For a same level of factor VIII or IX, hemorrhagic manifestations are variable from one patient to the other. Moreover, several studies showed that haemophilic B patients bleed less and consume fewer anti-hemophilic concentrate that haemophilic A patients. The main inhibitors of the coagulation are antithrombin, Protein C-Protein S-Thrombomodulin system, and tissue factor pathway inhibitor (TFPI). TFPI is the specific and exclusive inhibitor of tissue factor pathway that is the main way by which plasmatic coagulation starts. TFPI is a potent direct inhibitor of factor Xa and Xa-dependent inhibitor of the VIIa-Tissue Factor (TF) complex. In hemophilic patient, the production of Xa by the amplification pathway being strongly altered because of factor VIII or IX deficiency, thrombin generation (via Xa) comes exclusively from TFPI regulated tissue factor pathway. We can thus say that if haemophilic patients bleed, it is also because of the presence of TFPI that inhibits at the same time Xa and the complex TF-VIIa as soon as factor Xa is generated.

This is a prospective, non-randomized, controlled study to examine whether or not having a higher trough during prophylactic treatment with clotting factor offers better joint protection than the standard trough of 1% Factor IX (FIX or Factor 9). This study will test the hypothesis that an extended half-life (EHL) FIX product with an intended trough of >10% could offer better protection than previous treatment concentrates. This study also examines whether or not joint damage could be diagnosed earlier using ultrasound images.

This is an investigator-initiated, multinational, retrospective, non-interventional pilot study conducted in five haemophilia treatment centres from different geographical regions that maintain a local (Algeria, Malaysia) or national (India, Iran, South Africa) haemophilia registry. Data from a randomly selected sample of patients from national or local registries are anonymously collated and analysed.The aims are to determine the feasibility of combining data from national and local registries in countries with developing healthcare systems and to assess how existing registries implemented current recommendations for data collection in terms of available fields and their completion.

Ultrasound represents a promising technique for the assessment of joint health in persons with haemophilia (PWH) by non-imaging specialists. The Haemophilia Early Arthropathy Detection with Ultrasound (HEAD-US) programme has been developed with the aim of integrating joint ultrasound in the routine assessment of PWH through the use of a simplified scoring system. The inter-operator reliability of the technique among European haemophilia treaters has been validated and described elsewhere. Further work is needed to assess the real-world impact of ultrasound on disease management and treatment decision-making.

This study is conducted in Africa, Asia, Europe, North America and South America. The purpose of the survey is to identify the key psychosocial issues affecting patients with haemophilia.

Hypothesis a. There are patients with von Willebrand Disease in Cuenca. Primary question a. How many women referred with a history of bleeding may have von Willebrand disease? Secondary Associations between the bleeding score and initial laboratory studies What are the differences on subgroups of enrolled patients with the bleeding score? Ancillary What is the clinical and socio-economic status of women with von Willebrand Disease in Cuenca? What is the clinical and socio-economic status of patients with Hemophilia in Cuenca?

The is study will examine whether variation in clinical bleeding frequency and severity among boys with severe Hemophilia A (Factor VIII deficiency) is associated with variations in laboratory measurements of platelet activity.