Active clinical trials for "Giant Cell Arteritis"

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.

The study aims at measuring the sensitivity and specificity of a series of imaging signs (recorded by magnetic resonance angiography, vascular tomodensitometry, vascular ultrasonography, retina angiography and retina optic coherence tomography) for the diagnosis of Horton disease, the gold standard being the result of temporal artery biopsy.

Giant Cell Arteritis (GCA) is the most common vasculitis and has significant morbidity in terms of blindness, stroke, and tissue necrosis. It requires protracted treatment with high-dose steroids, and despite this there is a risk of flare during the treatment. Little is known about the initial triggers for the inflammatory process, and there are no good markers of response or relapse. We will study patients referred with suspected GCA to identify important components of the immune response in GCA, and follow them over time to collect evidence of how best to monitor their condition.

Giant cell arteritis (GCA) is a medium to large vessel vasculitis with a predilection for the superficial cranial and intrathoracic arteries. Diagnosing the condition and predicting which patients will develop large vessel complications remains a challenge. There are limitations with temporal artery biopsy, magnetic resonance angiography and ultrasound of temporal arteries and American College of Rheumatology classification criteria. Positron emission tomography (PET) has been shown to be a useful modality in detecting inflammation in large intra-thoracic vessels but previously has not been able to accurately detect FDG uptake in the superficial cranial arteries due to poor spatial resolution. Newer scanners can perform finer cuts of the head and can detect uptake in these arteries. This study has three main components: Cross sectional study assessing the accuracy of PET uptake in the superficial cranial and intrathoracic arteries of suspected GCA patients for the diagnosis of GCA Cohort study assessing the prognostic implication of FDG aortic uptake on aortic diameter at 24 months Cohort study assessing the Th1 and Th17 cytokine profile in patients with and without FDG PET uptake at 0, 6 and 24 months

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.

Temporal artery biopsy is a useful tool helping to the diagnosis of giant cell arteritis. However, other diagnoses might be associated with abnormal temporal artery biopsy. The purpose of this study is to describe the frequency of giant cell arteritis differential diagnoses with positive temporal artery biopsy.

The aim of this open, controlled, multicentre biomedical research study is to identify new markers specifically associated with Horton's disease. This would make it possible to improve the diagnosis and management of this disease. Participation consists in taking one or several blood samples depending on the group patients/controls.

A cross-sectional study design and online questionnaire was used to assess the informational needs of patients with several different types of systemic vasculitis. Patients were recruited from within the Vasculitis Clinical Research Consortium (VCRC) online Patient Contact Registry1. Survey responses from participants in the VCRC Patient Contact Registry were compared to responses from a similar survey recently administered to patients within a United Kingdom (UK) based vasculitis support group (Vasculitis UK).

The purpose of this study is to provide validation of patient-reported data in the VCRC Patient Contact Registry by comparing patient-reported data with data provided by the physician who is the primary provider caring for the patient's vasculitis. Patients enrolled in the Patient Contact Registry with Behcet's disease, eosinophilic granulomatosis with polyangiitis (Churg-Strauss) (EGPA), giant cell arteritis (GCA), granulomatosis with polyangiitis (Wegener's) (GPA), microscopic polyangiitis (MPA), polyarteritis nodosa (PAN), and Takayasu's arteritis (TAK) were invited via email to participate in this study.

Introduction Temporal arteritis (TA) is the most common primary vasculitis in the adult population. TA is a systemic multi-organ disease but primarily involves the cranial arteries, especially the temporal artery. The signs and symptoms of the disease are variable and therefore the differential diagnosis is often difficult. The annual incidence of the disease in the population above the age of 50 in Jerusalem is about 10 per 100,000. Diagnosis is based on the clinical findings and confirmed by biopsy of the temporal artery, positive for histologic findings of arteritis. Though the biopsy procedure is minor and can be accomplished under local anesthesia, it is not without morbidity. Along with minor pain, more serious complications - facial nerve injury, ptosis, stroke, and local necrosis of skin - have been reported. A negative biopsy does not completely rule out the diagnosis of TA because of the segmental nature of the inflammation. Even if one removes an appropriate length of artery (usually 1-2 cm) the possibility exists that an involved segment may not have been included and the biopsy will be reported as normal. It has recently been reported that color Doppler ultrasonography can be used to diagnose TA. Arterial inflammation causing peri-vascular edema appearing as a "dark halo" and segmental stenosis of the temporal artery are characteristic ultrasound findings suggestive of TA. If there is no dark halo sign, a diagnosis of TA cannot be supported and temporal artery biopsy can be avoided in most of these patients. The presence of the dark halo sign has a positive predictive value of only 50%. As noted above the disease is characterized by segmental involvement of the artery and to avoid a false negative biopsy, excision of up to 3cm of the artery has been recommended, thereby increasing the morbidity, and leading patients to refuse the procedure. Use of ultrasound-guided biopsy of the artery may dramatically raise the sensitivity and specificity of the biopsy and reduce the requirement for excising long segments of artery. Objective The objective of this study is to examine the use of ultrasound-guided biopsy of the temporal artery in the diagnosis of TA. Ultrasound-guided biopsy will be compared to the standard random biopsy generally in use. Appropriate statistical methods will be employed. Methods The Vascular Laboratory in Shaare Zedek Medical Center performs approximately 200 Doppler ultrasound studies of the temporal artery each year at the request of community-based physicians. Some of these patients are then also referred for biopsy of the temporal artery at various surgical facilities in the city. In collaboration with the referring physician, the patients will be offered a combined diagnostic Doppler ultrasound and guided biopsy on the basis of clinical guidelines and according to the ultrasound findings as described below. Patients suffering from signs and symptoms consistent with TA and who have not undergone previous temporal artery biopsy will be included. Patients suffering from isolated polymyalgia rheumatica will be excluded. Patients who are already undergoing steroid treatment will be excluded. Patients with an ultrasound study that is positive for the dark halo sign will be divided into two groups on a random basis after obtaining informed consent. One group will undergo ultrasound-guided biopsy, while the other will undergo biopsy as is the standard practice in our institution - a 1-2cm length of temporal artery will be excised from the preauricular area. If the ultrasound is negative, no biopsy will be done in the setting of this study. It is expected that about 50 patients will be accrued during the 6-month study period. Differences in outcome will be analyzed using Fishers exact test. Approval from the Helsinki committee of Shaare Zedek Medical Center has been requested.