Active clinical trials for "Antiphospholipid Syndrome"

To Assess the Influence of Antiphospholipid Antibodies on INR Test Results in Patients with the Antiphospholipid Syndrome Anticoagulated with Vitamin-K Antagonists.

This 12 week study will observe patients with and without systemic lupus erythematosus who have persistent antiphospholipid antibodies in the blood who are starting a medicine called hydroxychloroquine. It will measure if these patients have a change in a blood test called the annexin A5 resistance assay over that 12 week period.

Study based on data concerning the first pregnancy treated and followed up after the diagnosis of oAPS in the NOH-APS cohort, according to clinical results already published; and on a thematic library collected and preserved at the time of the positive pregnancy test. ADAMTS 13 will be explored in the available samples defined above: ADAMTS13 antigen (presence of the molecule), ADAMTS13 activity (VWF proteolysis activity of the molecule), global autoantibodies against ADAMTS13 (plasma antibodies recognizing solid phase insolubilized ADAMTS13), these 3 parameters for the description of ADAMTS13 being measured using commercially available diagnostic kits, ELISA type, Technozyme® range, Technoclone, Vienna, Austria. The clinical endpoint evaluated will be the occurrence (yes/no) of preeclampsia, which is assessed globally, all subtypes combined. Then evaluated according to subtype: late preeclampsia from 34 weeks, early preeclampsia before 34 weeks, eclampsia (convulsions), HELLP syndrome, preeclampsia associated with the birth of a small-for-gestational-age child (defined at percentile 10 of the tables adjusted for gestational age and sex; severe: defined at percentile 3), preeclampsia associated with a retro-placental hematoma, ...

The primary objective of this study is to evaluate plasmatic concentrations of free PGF and sFlt1 for blood samples taken before a first low-molecular-weight-heparin injection and also for blood samples taken on the 4th day of injections (the latter correspond to the first systematic control of platelet counts) in women who have an obstetric antiphospholipid antibody syndrome and who are initiating a new pregnancy with recommended treatment. Our goal is to test the prognostic value of these data on the occurrence of: pregnancy loss categorized as embryonic loss (before 10 weeks gestation), fetal death (before 20 weeks gestation), stillbirths (from 20 weeks gestation to delivery), and neonatal death defined before reaching 28 days of age. ischemic placental pathology (pre-eclampsia, retro-placental hematoma, birth of a small-for-gestational-age infant)

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.

The antiphospholipid-antibody syndrome (APLA), which includes lupus anticoagulant, anticardiolipin, and anti-beta-2-glycoproteinI antibodies, is a thrombophilic disorder associated with arterial thrombosis, venous thrombosis or both. Patients diagnosed with APLA have a higher risk of recurrent thrombosis than do patients without known antibodies. Currently, warfarin is considered the anticoagulant of choice for prophylactic antithrombotic treatment for APLA patients after their first episode of thrombosis. In some patients with APLA who are treated with warfarin, the INR values determined on plasma are unreliable due to an influence of the APLA on the INR. In these individuals, alternative monitoring methods, such as factor II activity, chromogenic factor X activity or prothrombin-proconvertin time should be used to assess adequate anticoagulation. These tests are expensive and not widely available to some clinicians. Point-of-care (POC) instruments, on the other hand, are readily accessible to clinicians. Previous research has shown that INR values from 3 older point-of-care (POC) instruments are unreliable in 1/3 of APLA patients (CoaguChekTM, ProTimeTM, INRatioTM). However, there are now newer versions of these POC instruments available (CoaguChek XSTM, an investigational ProTime device, and a newer INRatioTM device) and it is unknown if these newer POC instruments are reliable in patients with APLA. The purpose of this study is to determine whether newer POC instruments are reliable in patients with APLA.

Antiphospholipid Syndrome (APS) is an autoimmune disorder in which the body recognizes certain normal components of blood and/or cell membranes as foreign substances and produces antibodies against them. Patients with these antibodies may experience miscarriages and blood clotting disorders, including heart attacks and strokes. APS may occur in people with systemic lupus erythematosus and other autoimmune diseases, or in otherwise healthy individuals. The Antiphospholipid Syndrome Collaborative Registry (APSCORE) is a national registry and tissue repository for patients with APS. This registry will collect clinical information and blood samples from people with APS.

Antiphospholipid antibody syndrome (APS) is an autoimmune disease characterized by systemic thrombosis and bad obstetric history. APS secondary to another medical disorder is the most common. Visual and ocular changes e.g. vaso-occlusive disease of retinal and choroidal vessels are found in patients with secondary APS. Patients with primary APS have also been reported to have ocular changes e.g. retinal vascular occlusion The aim of our study to detect prevalence of ocular changes in women diagnosed with primary APS and correlation of these changes with adverse obstetric outcome. If a correlation is present, ocular findings in women with APS could be used in the future as a predictor for poor obstetric outcome.

The primary objective of this study was to evaluate and compare the prevalence of the following psychiatric pathologies (based on the MINI5.0.0 questionnaire) among 3 groups of women (Leiden versus aP1Ab-positive versus thrombophilia-negative) with similar obstetrical histories 10 years after their initial assessment/diagnosis. Mood disorders, including depressive episodes during the previous two weeks, recurrent depressive disorders at any point in life, dysthymia in the last two years, or any current or past manic episode; Anxiety disorders, including current agoraphobia, current panic disorders, agoraphobia with panic disorders, current social phobia, generalized anxiety in the last 6 months, or current posttraumatic stress syndrome; Apparent psychotic syndromes, including isolated or recurrent psychotic syndromes, past or present (clinically validated), Current alcohol or drug problems (dependence or abuse).

The purpose of this study is to see if the CoaguChek XS is accurate in measuring International Normalized Ratio (INR) in patients with Antiphospholipid Antibody Syndrome (APL) receiving warfarin therapy.