View clinical trials related to Purpura.
Filter by:Thrombotic thrombocytopenic purpura (TTP) is a thrombotic microangiopathy defined by the spontaneous formation of platelet thrombi in the microvessels. These platelet microthrombi are responsible for a mechanical hemolytic anemia, a thrombocytopenia and a multivisceral ischemia. TTP is a rare but life-threatening disease in the absence of appropriate treatment (PLASMATHERAPY). The onset of the disease usually occurs in adulthood (MOSCHCOVITZ syndrome) and rarely in childhood (UPSHAW-SCHULMAN syndrome). TTP is either sporadic or recurrent with multiple unpredictable relapses. TTP pathophysiology has remained obscure until a new metalloprotease, ADAMTS13, has been demonstrated to be involved in about 90% of all cases. Physiologically, ADAMTS13 function consists in limiting the size of von Willebrand factor (VWF) multimers and consequently, their hemostatic capacity. A large majority of TTP is associated with a severe deficiency of ADAMTS13. In most cases, ADAMTS13 severe deficiency is acquired via auto-antibodies to ADAMTS13; more rarely, ADAMTS13 deficiency is hereditary via ADAMTS13 gene mutations. ADAMTS13 auto-antibodies are either inhibitory of the catalytic activity or non inhibitory. ADAMTS13 mutations are spread all over the gene. TTP prognosis is quite heterogeneous. Indeed, in about one third of the patients, TTP is refractory to PLASMATHERAPY and/or chronic relapsing. Until now, TTP prognosis factors are not known. Their identification is however crucial both to adapt the curative treatment of an acute episode (addition of first intention immunosuppressive agents to PLASMATHERAPY) and to prevent relapses. In this context, the aim of the current project is to identify some ADAMTS13 related prognosis factors in TTP. A national prospective multicenter study including both adult and pediatric patients with TTP related to a severe ADAMTS13 deficiency will be designed over a three-year period. This study will involve our group as the French reference center for ADAMTS13 and 10 clinical departments from various French hospitals. Patients will be tested for ADAMTS13 activity and antigen, ADAMTS13 antibodies and ADAMTS13 gene sequencing. Our main hypothesis is that the inactivation of the ADAMTS13 domains crucial for its catalytic activity, either by inhibitory auto-antibodies (acquired TTP) or by genetic mutations (hereditary TTP) is a major bad prognosis factor.
Octagam is a solvent/detergent-treated human normal immunoglobulin (IGIV) solution for intravenous administration. Octagam 5% is currently registered in about 80 countries. This study evaluated the efficacy and safety of Octagam 10% in Idiopathic Thrombocytopenic Purpura (ITP) in adults. As Octagam 10% is essentially similar to Octagam 5%, it is expected that Octagam 10% is as efficacious and safe (in respect to viral safety) as Octagam 5%.
This open-label, repeat dosing study, TRA108057, will evaluate the efficacy, safety and tolerability of eltrombopag, when administered in a repeat, cyclic dosing schedule. The study will describe the effect of repeated (3 cycles), intermittent dosing of eltrombopag on the pharmacodynamics and durability of eltrombopag response as measured by the peripheral platelet counts. For more information or to see if you qualify, please visit: http://www.itpstudy.com/gov
This is a phase 3b, multi-center, randomized, Standard of Care (SOC)-controlled, open-label, 52-week treatment study to compare romiplostim to medical SOC for Idiopathic Thrombocytopenia Purpura (ITP), with a 6-month Safety Follow-up. Patients randomized to romiplostim must complete the taper or discontinuation of medical SOC for ITP as soon as medically feasible after the initiation of romiplostim. After the completion or discontinuation of the study treatment period, any participant who does not transfer in to another romiplostim study will complete a 6-month Safety Follow-up period.
Prior to the use of plasma products, thrombotic thrombocytopenic purpura (TTP) was usually a fatal condition. During plasma exchange therapy, patients need transfusion plasma that is blood group specific. Transfusing a patient with an incorrect blood group may have fatal consequences. Uniplas is a universally applicable human plasma, which can be administered irrespective of the patient's blood group. This study will test the safety and efficacy of Uniplas in comparison to cryosupernatant plasma in treatment of patients with TTP.
Treatment for patients with autoimmune destruction of blood cells is poor. The part of the body that fights infections is called the immune system and white blood cells (WBCs) are part of the immune system. Normally, a person's body creates WBCs to fight infections and eliminates WBCs which have stopped helping the body function. Patients with autoimmune destruction of blood cells have difficulty eliminating old WBCs. The abnormal WBCs build up and can damage other healthy cells, which can lead to anemia, fatigue, jaundice, internal bleeding, infection, and cancer. Few effective medications exist for treatment for patients with autoimmune cytopenias and those commonly used are fraught with side effects. Nevertheless, as scientific understanding of autoimmune diseases has improved, more directed and less toxic therapies are becoming available. A number of groups have been studying the efficacy of a medication called sirolimus in patients with autoimmune diseases. This medicine has been FDA-approved for over 20 years. Sirolimus is a medicine used in children with other diseases. Sirolimus works, in part, by eliminating old and abnormal WBCs. Our group and others have shown that sirolimus is effective in mice with autoimmunity and in children with a rare condition called Autoimmune Lymphoproliferative Syndrome (ALPS). We believe sirolimus will help children with autoimmune cytopenias. We believe it will improve their symptoms and make them less sick. We propose to study sirolimus in children with chronic and/or refractory autoimmune cytopenias.
The purpose of this study is to assess the feasibility of a randomized, double blind, placebo controlled trial of add-on rituximab for non-splenectomized adults with acute immune thrombocytopenic purpura (ITP).
The rationale for this Phase III study is to evaluate the 6 month safety and efficacy of eltrombopag in the treatment of previously treated subjects with chronic ITP. The starting dose of eltrombopag, 50 mg, once daily was selected based upon the observed efficacy, safety and pharmacokinetics in a dose-finding Study (TRA100773). This Phase III study is a randomized, double-blind, placebo-controlled, Phase III study, to evaluate efficacy, safety and tolerability of eltrombopag, initially administered as 50 mg oral tablets once daily for six months in adult subjects with previously treated chronic ITP. Subjects will be randomized 2:1, eltrombopag to placebo, and will be stratified based upon splenectomy status, use of ITP medication at baseline and baseline platelet count less than or equal to 15,000/µL. Subjects will receive study medication for 6 months, during which the dose of study medication may be adjusted based upon individual platelet counts. In addition, subjects may taper off concomitant ITP medications and may receive any rescue treatments as dictated by local standard of care. After discontinuation of study medication, subjects will complete follow-up visits at weeks 1, 2, 4 and months 3 and 6.
Idiopathic Thrombocytopenic Purpura (ITP) is an autoimmune bleeding disorder characterised by isolated low platelet counts. The aim of treating patients with ITP is to increase the platelet concentration and reduce the risk of bleeding. A number of controlled multi-centre studies have demonstrated that Intravenous Immunoglobulin (IVIg) therapy produces a rapid rise in platelet counts within a 24 to 72 hour period. This study will evaluate the efficacy and safety of Ig NextGen 10% in adult patients with ITP.
The main purpose of this study is to compare how one 50mg tablet of SB-497115 is broken down in the body by healthy subjects versus subjects with mild, moderate or severe liver problems. The study is also being done to 1) check on how well the study drug is tolerated by healthy subjects versus those with liver problems and 2) to check if liver impairment affects how the study drug binds to protein in the blood.