View clinical trials related to Antiphospholipid Syndrome.
Filter by:An exploratory clinical study of the safety and efficacy of YTS109 cell injection in subjects with recurrent/refractory autoimmune disease
This Phase 1b basket trial will investigate the safety, tolerability, pharmacokinetics, pharmacodynamics, immunogenicity and preliminary efficacy of RAY121, a inhibitor of classical complement pathway, after multiple dose administration in patients with immunological diseases such as antiphospholipid syndrome (APS), bullous pemphigoid (BP), Behçet's Syndrome (BS), dermatomyositis (DM), immune-mediated necrotizing myopathy (IMNM) and immune thrombocytopenia (ITP).
Context: Until 70% of thrombotic event are reported during Sars-CoV2 infection. Antiphospholipid antibodies (aPL) tests are often positive. We aim to determine if aPL positivity is involved in thrombose of Sars-CoV2 infection investigating the effect of aPL on thrombin generation (TG) and leucocyte pathway activation (neutrophils extracellular traps (NETs) and activation of triggering receptor expressed on myeloid cells 1 (TREM-1)). Method: We will compare plasma from five groups of subjects: patients with antiphospholipid syndrome (APS) and patients hospitalized for Sars-CoV-2 infection with or without aPL, and as control, patients with acute venous thromboembolism event and healthy volunteers. For each subject, we will analyze aPL, activated protein C (APC) resistance measured by TG and leukocytes markers as circulating neutrophils extracellular traps (NETs) and soluble triggering receptor expressed on myeloid cells one (sTREM-1). We will control aPL test at three month and analyze their persistent positivity and association with thrombotic event. Results: we hypothesize that patients with COVID-19 and aPL will have a similar aPL and level of APS resistance that patients with APS. Also, we think that circulating NETs and sTREM-1 levels will be more important in patients with COVID-19 with aPL than patients without aPL and similar in patients with COVID-19 and aPL and patients with APS. Conclusion: our study will be the first to analyze the potential role of aPL on APC resistance measured by TG and neutrophil activation in COVID-19.
The efficacy of low-dose aspirin combined with low-molecular-weight heparin treatment for improving antiphospholipid syndrome and maternal-fetal outcome of patients is recognized by various countries and recommended by the guidelines. However, there are still 20-30% of APS patients whose treatment fails. Therefore, the standard treatment effect is still not ideal, and other treatment options need to be explored. The purpose of this study is to conduct a randomized double-blind, parallel controlled study of patients with recurrent miscarriage and APS in addition to standard treatment, plus hydroxychloroquine sulfate (HCQ) or placebo, to observe the effects of HCQ on pregnancy outcome in patients with abortion and APS, to evaluate the effectiveness and safety of HCQ treatment.
Antiphospholipid syndrome (APS) combines thrombotic (venous and/or arterial) and/or obstetrical manifestations, along with biological anomalies related to the presence of antiphospholipid antibodies. Despite actual treatment recommended by international guidelines, the relapse rate in APS is high and survival is 65% at 15 years. Hydroxychloroquine has demonstrated its efficacy and benefits in the treatment of Systemic Lupus Erythematosus, but there is no current consensus concerning the efficacy of this treatment in the secondary prevention of thrombotic events in primary APS, even though several in vitro experimental and animal model data, along with several clinical studies have suggested a beneficial effect of this drug in this indication. Considering the prevalence of primary APS in the general population and of the number of clinical events observed in patients with primary APS and receiving conventional treatment with vitamin K anticoagulants (VKA), the consortium expects a minimum clinically relevant difference of 70%. Considering a prevalence of thrombotic events for the entire studied primary APS population of 10% at 2 years, the consortium expects a 70% decrease in thrombotic events under Hydroxychloroquine treatment administered in addition to VKA treatment in primary APS, i.e. a 3% prevalence in the Hydroxychloroquine group at 2 years. The consortium proposes a drug trial, phase III, national multicentric, comparative, randomized, superiority, double-blind, controlled with 2 compared groups (Hydroxychloroquine versus placebo) study. The enrolment period will be 24 months. The main aim of this trial is to comparatively assess at 24 months the number of new thrombotic events (venous and arterial) in primary antiphospholipid syndrome in patients treated with VKA plus Hydroxychloroquine versus VKA plus placebo, in a multicentre, prospective randomized, double-blind, versus placebo study.
Fabry disease, an X-linked disorder of glycosphingolipids that is caused by mutations of the GLA gene that codes for α-galactosidase A, leads to dysfunction of many cell types and includes a systemic vasculopathy. As a result, patients have a markedly increased risk of developing ischemic stroke, small-fiber peripheral neuropathy, cardiac dysfunction and chronic kidney disease. Because this disease is a rare disease most of the time it is misdiagnosed, so in this study we will check out the Prevalence of lysosomal hydrolase alpha-glagtosidase deficiency ( Fabry disease) in patients with Antiphospholipid Syndrome.
detection of anti-ds DNA in patients with rheumatic diseases by two methodes : immunofluorescence & ELISA
The Antiphospholipid Syndrome is an immune disease where the presence of antibodies directed against cell membrane phospholipids (antiphospholipid antibodies) can cause an hypercoagulable state that causes thrombosis and obstetric complications (miscarriages, stillbirths). Since 1999 the Sapporo Criteria for Antiphospholipid Syndrome diagnosis includes the development of fetal growth restriction (diagnosed postpartum), but this was done without solid evidence of a relation between the two or using the most common form of fetal growth restriction diagnosis (ultrasound). Our study will try to add information to this particular point.
The Antiphospholipid Syndrome is an immune disease where the presence of antibodies directed against cell membrane phospholipids (antiphospholipid antibodies) can cause an hypercoagulable state that causes thrombosis and obstetric complications (miscarriages, stillbirths). Since 1999 the Sapporo Criteria for Antiphospholipid Syndrome diagnosis includes the development of severe preeclampsia before 34 weeks of gestation, but this was done without solid evidence of a relation between the two. Our study will try to add information to this particular point.