View clinical trials related to Hemophilia A.
Filter by:BT200 is a PEGylated aptamer that binds to the A1 domain of human von Willebrand factor (VWF). At low doses, BT200 blocks the clearance of VWF antigen (VWF Ag) from the circulation and causes an increase in concentrations of both VWF Ag and Factor VIII (FVIII), but has negligible effect on the activity of either. At higher doses, BT200 blocks clearance of VWF and also inhibits its activity, but still does not inhibit FVIII activity. Therefore, low dose BT200 could potentially be used to correct deficiency of VWF and/or FVIII in patients with hereditary bleeding disorders. This study is designed as a "basket design" pilot study to determine the relevant dose and pharmacological activity of BT200 in such patients. In this open basket study up to 25 patients with the following congenital blood-clotting disorders are to be included: Patients with hemophilia A, heterozygous carriers of hemophilia A with subnormal FVIII levels; patients with von Willebrand syndrome (VWD) type 1, "Vicenza type", and with VWD type 2b. Participants will receive BT200 subcutaneously on day 0, day 4 and day 7 in the first week and then once a week for a total of five weeks - initially in a dose of 3 mg, then in week 3 individually after response in a dose of 3 to 9 mg. Subsequently, blood samples are taken once a week for a further three weeks (wash-out phase). Patients may be enrolled in an additional pharmacokinetics sub-study. For this purpose, approximately three blood samples are taken to estimate the half-life of substituted FVIII under the influence of BT200. The primary objective of this study is to obtain clinical proof of mechanism for BT200 in one or more hereditary bleeding disorders.
Currently, hemophilia A patients are managed with prophylactic or on-demand replacement therapy with recombinant FVIII or alternative therapeutics. The major challenges of current treatment regimens, such as the short half-life of hemophilia therapeutics with the need for frequent IV injections, encourage the current efforts for gene transfer therapy. This study will evaluate the safety and preliminary efficacy of ASC618, an AAV vector encoding B-domain deleted codon-optimized human factor VIII under a synthetic liver-directed promoter
Record real life data of patients with Hemophilia A and treated with Afstyla® to assess the effectiveness and the safety of the treatment used as prophylaxis, prevention of bleeding (e.g. surgery) or on-demand treatment during 3 years after patient inclusion
Phase IV multi-center, US-centric, open-label, safety study enrolling participants with Hemophilia A or B with inhibitors12 years of age and older, who are either on long term prophylactic treatment (e.g., emicizumab) at risk of experiencing a breakthrough bleeding event (BE), or who are not on prophylactic treatment who may need to control a BE.
Background Hematological diseases are disorders of the blood and hematopoietic organs. The current hematological cohorts are mostly based on single-center or multi-center cases, or cohorts with limited sample size in China. There is a lack of comprehensive and large-scale prospective cohort studies in hematology. The purpose of this study is to analyze the incidence and risk factors of major blood diseases, the treatment methods, prognosis and medical expenses of these patients in China. Method The study will include patients diagnosed with acute myeloid leukemia, multiple myeloma, hemophilia, aplastic anemia, leukemia, myelodysplastic syndrome, lymphoma, bleeding disorders or received bone marrow transplantation in the investigating hospitals from January 1, 2020, and collect basic information, diagnostic and treatment information, as well as medical expense information from medical records. In its current form, the NICHE registry incorporates historical data (collected from 2000) and is systematically collecting prospective data in two phases with broadening reach. The study will use questionnaire to measure the exposure of patients, and prospectively follow-up to collect the prognosis information.
Primary Objective: - To evaluate the long-term safety of BIVV001 in previously treated subjects with hemophilia A Secondary Objectives: - To evaluate the efficacy of BIVV001 as a prophylaxis treatment. - To evaluate the efficacy of BIVV001 in the treatment of bleeding episodes. - To evaluate BIVV001 consumption for prevention and treatment of bleeding episodes. - To evaluate the effect of BIVV001 prophylaxis on joint health outcomes. - To evaluate the effect of BIVV001 prophylaxis on Quality of Life (QoL) outcomes. - To evaluate the safety and tolerability of BIVV001 treatment. - To assess the PK of BIVV001 based on the one stage activated partial thromboplastin time (aPTT) and two-stage chromogenic FVIII activity assays (only applicable to Arm B). - To evaluate the efficacy of BIVV001 for perioperative management
Long-term follow-up of subjects who received SB-318, SB-913, or SB-FIX in a previous trial and completed at least 52 weeks post-infusion follow-up in their primary protocol. Enrolled subjects will be followed for a total of up to 10 years following exposure to SB-318, SB-913, or SB-FIX.
This study will enroll children who have hemophilia A with inhibitors who successfully completed immune tolerance induction per the ISTH criteria (negative inhibitor titer, recovery >66% of expected, and half-life of >6 hours with their current FVIII concentrate). Previous to emicizumab, there was only one option for these patients which was to continue FVIII therapy in a prophylaxis mode to prevent bleeding. There was a sense that the ongoing FVIII served to maintain tolerance however no evidence for this notion exists and in fact what limited data is available suggests that continuing FVIII may not be necessary simply to maintain tolerance. To figure out this question, this will be a randomized, controlled 2 arm study which will randomize patients post-successful ITI to emicizumab plus weekly FVIII (for maintenance of tolerance) versus emicizumab alone. Patients will be followed for up to 2 years. We aim to enroll 52 subjects. The FVIII weekly arm can use any factor VIII concentrate and emicizumab is standard of care for inhibitor and non-inhibitor patients.
Patients with severe hemophilia A can experience repeated bleeding into the same joint (ie, a target joint; most frequently in the ankle, knee, and elbow), which can contribute to hemophilic arthropathy and, over time, ultimately result in chronic pain, functional limitations, deformities, reduced joint of motion and decreased quality of life. Early use of prophylaxis is recommended following diagnosis of severe hemophilia A to maintain joint health and prevent joint destruction. Eloctate is produced using a human cell line and an addition of an Fc fusion protein to recombinant FVIII (rFVIIIFc) with prolonged half-life and was launched in Taiwan from Nov. 2018. The pivotal studies of rFVIIIFc show that patients maintained a low bleeding rate, with most experiencing a median annualized bleeding rate (ABR) of 0 and 97% of target joints were resolved across adult, adolescent, and pediatric subjects during 4 years of prophylaxis rFVIIIFc treatment. However, in Taiwan we are still lacking the real world treatment outcome data on rFVIIIFc, especially for the joint health evidence in Asian Hemophilia A patients. Therefore the objective of this study is to evaluate the effectiveness of rFVIIIFc treatment on joint health over a long observational period of 36 month focused on physical and functional changes in hemophilia A patients.
The purpose of this study is to demonstrate that PEGylated liposomes (PEGLip) can shield FVIII from the immune system and inhibitors, and therefore provide a prophylactic FVIII replacement therapy for patients with inhibitors to FVIII.