View clinical trials related to Giant Cell Arteritis.
Filter by:A longitudinal post-marketing surveillance registry nested within the UK GCA Consortium that assesses the effectiveness and safety of tocilizumab in controlling refractory or relapsing forms of GCA in patients who require escalation of therapy to reach sustained remission. Half the patients recruited will have been prescribed tocilizumab (cases) and the other half will be prescribed alternative therapies (controls). There are four study visits over 18 months: baseline, 6 months, 12 months and 18 months. At each visit data is collected on demographics; diagnosis and investigations; previous and concomitant medications; medical history; co-morbidities, vital signs; smoking and alcohol; disease activity and damage; routine laboratory tests; reason for starting escalation therapy. Safety data is collected on an ongoing basis.
Patients with recent PMR(6 months or less) with a PMR-AS >17 and no oral or parenteral GCs during the past 2 weeks (at least) will be included. Treatment with oral baricitinib 4mg or placebo during 12 weeks and then, if PMR-AS≤10, they will receive baricitinib 2 mg for 12 weeks and then will stop treatment. No rescue is allowed before week 4 (visit 3) but patients may receive up to 2 intra-articular or soft tissue injections of GCs until week 4 according to investigator's opinion. From week 4 to week 12, steroids will be proposed as a rescue for both arms at investigators' discretion and according to PMR-AS.
Corticosteroid therapy has always been the standard treatment for giant cell arteritis (GCA), with very good initial clinical efficacy but a high relapse rate when it declines. The target population of this condition, often elderly, is particularly exposed to the numerous undesirable effects of corticosteroid therapy, and this especially as its duration lengthens with the re-increases of doses according to relapses: metabolic complications, osteo-muscular , infectious or neuropsychiatric. Investigators propose to compare prospectively the results of a "conventional" corticosteroid regimen as recommended by European societies, to those of a "lighter and / or shorter" scheme, inspired by recent North American trials. , including the largest prospective global study in the field. Investigators hypothesize non-inferiority of the lightened regimen for relapse rate without relapse at S52, but with a decrease in treatment-related adverse events whose cumulative doses should be lower. Investigators therefore plan to include prospectively over 3 years 150 patients, 75 for each of the two arms, with a newly diagnosed ACG. A randomization of the treatment arm will be performed and a predefined pattern of cortisone adapted to body weight will be given to the patient. Relapse rates, maintenance of remission, cumulative doses of cortisone and adverse effects of treatment will be analyzed at the 52nd week of the introduction of corticosteroid therapy. An interim analysis is planned at S28.
It is hypothesized that chewing-gums may be a useful test to unmask jaws intermittent claudication in order to enhance the diagnosis of Giant Cell Arteritis (GCA).
Giant cell arteritis is the leading cause of vasculitis in the elderly. No work evaluates its impact on autonomy. At the diagnosis a gerontological evaluation will be carried out including the scores ADL, iADL, MNA, SF 36, SPPB, FRIED and GDS. A monthly telephone reassessment will collect ADL and iADL. The end-of-study consultation at M12, conducted by a geriatrician, will have the same scores as at M0. This will make it possible to evaluate the difference in the functional autonomy score between M0 and M12 in the elderly with ACG.
This case control study aims to determine whether spontaneous coronary artery dissection (SCAD) is associated with autoimmune diseases and to update the incidence of SCAD in a population-based cohort.
This study will evaluate the pharmacokinetics, pharmacodynamics, and safety of two dose levels of tocilizumab (TCZ) administered by intravenous (IV) infusion every 4 weeks (Q4W) to participants with giant cell arteritis (GCA).
Giant-cell arteritis (GCA) is the most frequent vasculitis after 50 years. It is characterized by a granulomatous inflammation of the wall of large vessels, involving especially the aorta and extra-cranial branches of the external carotid, with vascular remodelling leading to ischemic manifestations such as temporal headaches, jaw claudication, scalp tenderness and visual loss. Most patients with GCA also present signs of systemic inflammation, including weight loss, fatigue and fever, together with an increased erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) level. Glucocorticoids (GC) are the cornerstone of the treatment of GCA. They are very effective and are usually given for 18-24 months to avoid relapses. Therefore, most patients develop GC-related complications that cause morbidity and disability. GC sparing strategies are thus required to improve the treatment of GCA. - A 12-month treatment with tocilizumab (TCZ) has recently been shown to be effective in inducing and maintaining remission of GCA, with a dramatic GC-sparing effect. However, TCZ is an expensive drug; TCZ suppresses CRP synthesis and ESR elevation so that it is difficult to monitor patients; and importantly around 40% of patients relapse within 6 months after TCZ discontinuation, whether prescribed for 12 months or 4 months. - In association with 6 months of prednisone, 10 mg/week of methotrexate (MTX) for 24 months lowers the risk of relapse at 24 months from 84% to 45%. Therefore, the hypothesis is that 12 months of MTX treatment (0.3 mg/Kg/week, without exceeding 20 mg/week) is not inferior to 12 months of TCZ (162 mg SC/week) in term of prevention of relapse at 18 months. The MTX strategy might be more cost effective than TCZ. In the present study, it is proposed to compare MTX versus TCZ in a multicenter randomized controlled trial. Moreover, the economic consequences associated with the use of MTX rather than TCZ will be also assess.
Giant cell arteritis , also named Horton's disease, is the most common vasculitis in subjects over 50 years old. The incidence increases with age : from 188 to 290 cases per million inhabitants per year, with a North-South gradient. The major risk of Horton's disease is blindness, unilateral, occurring in 15 to 20% of cases, sometimes preceded by episodes of transient amaurosis. The decrease in visual acuity is often brutal, irreversible and bilateral in 25 to 50% of cases. The mechanism of this blindness is an arterial ischemia: Acute Anterior Ischemic Optic Neuropathy acute anterior ischaemic optic neuropathy (90%), acute retro-bulbar ischaemic optic neuropathy (5%), occlusion of the central artery of the retina (5%). The pathogenesis of this brutal ischemia is not fully understood. One of the hypotheses suggests that, during stimulation by an antigen of the environment, preactivated dendritic cells of the arterial wall would stimulate T lymphocytes. These will recruit cells that cause an inflammatory infiltrate polymorphic predominant at the media level. These lesions may be accompanied by destruction of the internal elastic lamina, with inconstant but pathognomonic presence of multinucleated giant cells. All arteries with internal elastic lamina can be affected by parietal inflammation, which results in stenosis and occlusion, explaining the ischemia. The visual loss is usually abrupt and very severe, leaving the patient with definitely very low or no residual visual acuity. Conventional treatment currently recommended includes systemic corticosteroid therapy at 1 mg / kg / day, preceded or not by 500 mg pulses of methylprednisolone , and associated with antiplatelet and anticoagulant therapy (LMWH). Despite the decline in visual acuity thus occurred is then always final. Certainly loss of vision has a major impact on the quality of life of patients. Apart from this lymphocytic inflammation, a process of vascular remodeling is at the origin of the vascular occlusion phenomenon. The endothelin system is a family of amino acids including 3 members: ET1, ET2 and ET3. ET1 is a potent vasoconstrictor. ET1 receptors (ETA and ETB) are expressed in the arteries of patients with giant cell arteritis . The expression of ET1 associated with proliferation of muscle cells in arteries will decrease under the effect of endothelin inhibitors. This has been shown during treatment of pulmonary hypertension. In giant cell arteritis , the endothelin system continues to be very active up to 8 days despite the introduction of systemic corticosteroids. Bosentan is a mixed endothelin receptor antagonist with affinity for both ETA and ETB receptors. This inhibitor is used in treatment of pulmonary artery hypertension, digital ulcerations of systemic sclerosis and critical peripheral arterial ischemia.
Patient Power is a patient research network and database (registry) to collect prospective information about demographics, self-reported diagnoses and medications, and willingness to participate in research from participants with rheumatoid arthritis (RA), spondyloarthritis (SpA), other musculoskeletal conditions, chronic neurological conditions like migraine, chronic pulmonary conditions like Chronic Obstructive Pulmonary Disease (COPD), asthma, autoimmune dermatological conditions such as psoriasis, and other chronic inflammatory or immune-mediated conditions. In addition, since patients with chronic conditions often have other co-morbidities like cardiovascular health and obesity-related metabolic disorders, these conditions will also be included. Participants will provide information from their smartphones or personal computers. The information will be used by researchers and clinicians to help patients and their providers make better, more informed decisions about treatment of chronic conditions.