Active clinical trials for "Hemophilia A"

This study aims to make an inventory of the condition and care of patients with haemophilia and carriers for haemophilia in Ivory Coast and to promote the use non substitutive strategies that are not costly and available in Ivory Coast, to improve the management of haemophilia in this country. The purpose of this project is to evaluate the extent to which the active promotion of these various measures will improve the care of patients with haemophilia and carriers in Ivory Coast.

Prospective, multinational, non-interventional post-authorisation study to collect additional clinical data and to ensure consistency in the long-term between the outcome from pre-authorisation clinical studies (in 135 previously treated paediatric and adult patients) and routine clinical practice. Besides aspects such as general product safety and efficacy, there will be a focus on immunogenicity, particularly on inhibitor development. The diagnosis of FVIII inhibitor will be based on clinical observations and confirmed by FVIII inhibitor testing in the laboratory.

This non-interventional study will prospectively collect detailed, high-quality documentation of bleeds, HRQoL, and safety in patients with hemophilia A with or without FVIII inhibitors treated according to local routine clinical practice (receiving FVIII replacement or bypassing agents as either episodic or prophylactic treatment). Actual patients will be enrolled from routine clinical practice in this observational study.

This study is conducted in Europe and North and South America. The primary aim of this observational study is to evaluate the frequency and pattern of bleeding episodes in haemophilia patients receiving preventative treatment with activated recombinant human factor VII. The secondary aim is to evaluate which patients are selected for this treatment, the dose and dose intervals used, and the safety of activated recombinant human factor VII when used as prevention. The study also aims to increase understanding of the unmet medical need and clinical relevance of preventative treatment in haemophilia patients.

The aim of this international prospective, non-interventional post-marketing surveillance study is to obtain data on treatment procedures, long-term safety and efficacy and patient acceptance of KOGENATE Bayer in treatment of patients with haemophilia A under daily-life treatment conditions.

The aim of this international prospective post-marketing surveillance study is to obtain data on treatment procedures, long-term safety and efficacy and patient acceptance of KOGENATE Bayer/FS in treatment of patients with haemophilia A under daily-life treatment conditions.

This study is conducted in the United States of America (USA). The aim of this study is to investigate the at-home-administration of bypassing agents for treatment of bleeding episodes in patients with congenital haemophilia with inhibitors to factors VIII and IX. We are further investigating how bleeding episodes affect the quality of life of the patient and their family or caregivers.

This is an open-label multi-center Registry in patients with hemophilia B receiving BeneFIX. All patients who begin treatment with BeneFIX in European Union countries, will be eligible for participation. Patient demographics will be collected at baseline for all patients. A baseline FIX activity and Bethesda assay for inhibitor based on historical data should be recorded if available. Adverse events as defined in the protocol will also be reported on the appropriate forms. Data will be collected from patients on an ongoing basis to ensure that information is being captured for each patient being treated with BeneFIX.

To examine mechanisms of individual differences in the progression of HIV infection in hemophiliacs.

Hemophilia A (HA) is a rare X-linked bleeding disorder caused by a deficiency in factor VIII (FVIII) affecting 1/5,000 males1. Carriers of HA are females carrying the pathogenic variant responsible for the familial HA at a heterozygous status. About 30% of HA carriers have low FVIII levels and can therefore have abnormal bleeding symptoms2,3. Such as males with moderate/mild HA, bleeding can be treated or prevented with either FVIII concentrates or desmopressin4,5. This drug acts as a vasopressin type 2-receptor (V2R) agonist that causes endothelial cells to rapidly secrete von Willebrand factor (VWF) and FVIII from Weibel-Palade bodies into the bloodstream6,7. However, the mechanism of action of post-DDAVP FVIII increase remains poorly understood in hemophilia A. One advantage of DDAVP is that it increases the level of endogenous FVIII, thus avoiding the need for potentially immunogenic exogenous FVIII. It is also cheaper than FVIII concentrates. Finally, it is more widely available in pharmacies in all hospitals with emergency rooms and surgical facilities. The FVIII response profile to DDAVP in carriers appears quite similar to that seen in men with mild/moderate HA8-11. A post-DDAVP increase in the FVIII level of 2-4 fold the basal level is usually observed. This FVIII response presents an important inter-individual variation making it necessary to carry out a therapeutic test before its use for the anti-hemorrhagic treatment. The basal FVIII level logically conditions the intensity of the post-DDAVP FVIII peak. However, other factors influencing the post-DDAVP FVIII response are very likely. Unfortunately, few series describing the FVIII response to DDAVP in HA carriers have been reported to date and they included too small numbers of patients to precisely analyze the factors of variation in the post-DDAVP FVIII pharmacokinetics (PK). Candy et al did not find any difference depending on the severity of the pathogenic variants for HA or on the age11. However, this study was carried out in a cohort including only 17 patients, therefore too small for a reliable statistical analysis. The GIDEHAC study (Genetic Influence of Desmopressin Efficacy in Hemophilia A Carriers) is a French study with the following objectives: the description of the post-DDAVP FVIII PK in a large retrospective cohort of HA carriers, the research of patients-related factors influencing this FVIII PK, and the building of predictive population- and Bayesian-based models.