Active clinical trials for "Giant Cell Arteritis"

The purpose of this study is to demonstrate the efficacy and safety of subcutaneously (s.c.) administered secukinumab 300 mg in combination with glucocorticoid taper regimen compared to placebo in combination with glucocorticoid taper regimen, in adult patients with new onset of giant cell arteritis (GCA) who are in clinical remission and who are eligible for treatment with glucocorticoid-monotherapy as per current clinical practice and treatment guidelines for the targeted participant population, thereby supporting health technology assessments (HTAs) of secukinumab in Germany.

Naltrexone is an FDA approved drug (for alcoholism) that has found widespread use "off-label" to treat pain and improve quality of life at much lower doses than are used for the approved indication. There are a few scientific studies in three conditions (fibromyalgia, Crohn's disease, and multiple sclerosis) that suggest that this drug has benefit and is safe. However, considering the extent of use in other conditions, and uncertainty about the mechanism of action study is needed in a diverse set of diseases, including vasculitis. The purpose of this clinical trial is to determine if low dose naltrexone is effective in improving health-related quality of life (HRQoL) among patients with vasculitis. Although it is a pilot study, a placebo-controlled component is used because of the prominent placebo group effect seen in studies with self-reported subjective outcomes.

Giant cell arteritis (GCA) is the most common form of vasculitis after age 50. It is a vasculitis affecting the large vessels, in particular the aorta and its collateral vessels, especially those in the external carotid area. Corticosteroids are the cornerstone of GCA treatment. They are very effective but are generally continued for 18 to 24 months or more since at least 30% of patients with GCA will relapse during their follow-up. Thus, the vast majority of patients treated for GCA have at least one adverse event from corticosteroid therapy, which is the main source of morbidity in these elderly patients. Reducing the use of corticosteroids, especially during relapses, is therefore a major objective to improve the treatment of patients with GCA. Methotrexate, abatacept and tocilizumab have been shown to be effective during GCA. However, the therapeutic effect of the first two is modest. As for tocilizumab, its use has many limitations: suspensive effect, many contraindications and there are no biological parameters available for reliable monitoring of inflammatory syndrome in these patients. Recent data have shown the major role of T helper (Th) Th1 and Th17 T cells in the pathophysiology of GCA. Th17 lymphocytes are sensitive to corticosteroid therapy but Th1 persists despite treatment and produces interferon-γ which activates macrophages and smooth muscle cells, leading to remodelling of the vascular wall responsible for ischemic GCA manifestations. Joint targeting of Th17 and Th1 responses is therefore necessary to fully treat the vascular inflammation that exists during GCA. Ustekinumab, which is a monoclonal antibody blocking the subunit common to IL-12 and IL-23 (p40), blocks the Th1 and Th17 responses, and could therefore be an excellent treatment for GCA. This study aims to evaluate the efficacy of ustekinumab for the treatment of GCA relapses. Very little data is available on the use of ustekinumab during GCA. Recently, 14 patients with refractory GCA, defined as the occurrence of at least 2 relapses and the inability to reduce the prednisone dose below 10 mg/d, received ustekinumab treatment. No patients relapsed during treatment while the median dose of prednisone was reduced from 20 to 5 mg/d. Ustekinumab has also been used successfully in a patient with refractory GCA. Under treatment, the patient did not have a new relapse and the dose of prednisone was reduced. In addition, there was a major decrease in the percentages of circulating Th1 and Th17 lymphocytes. However, to date, no controlled studies have been conducted to confirm the efficacy of ustekinumab during GCA relapses. This guarantees the originality and innovation of this study.

Polymyalgia rheumatica (PMR) is prevalent among elderly. Untreated, it leads to major reduction in quality of life. Glucocorticoids are the cornerstone of treatment, but have drawbacks, warranting glucocorticoid sparing treatment. A proof of concept study on Rituximab (RTX) vs placebo showed efficacy in 48 vs 21%(p=0.049) in glucocorticoid free remission after 21 weeks (Marsman et al. 2021). Though promising, the short study duration, small sample size and only few relapsing patients included in this study require further confirmation. Therefore a larger randomised controlled trial with longer follow up will be performed on RTX efficacy on glucocorticoid free remission in relapsing PMR patients during glucocorticoid taper.

AION is the main cause of blindness in patients with GCA. High dose steroid is the reference treatment of this condition, but medical unmet need remains. Subcutaneous tocilizumab, a targeted biotherapy, recently received marketing authorization for the treatment of GCA, but only demonstrated at yet that it can allow steroid dose sparing. The aim of this study is to assess the benefit of tocilizumab and IV steroids combination or IV steroids alone, in the treatment of AION due to GCA.

Giant cell arteritis (GCA) is the most common vasculitis in the elderly. Accurate diagnosis is of utmost importance in order to then initiate the necessary immunosuppressive therapy. For large-vessel GCA (LV-GCA) involving the aorta and its branches, FDG-PET/CT is the standard in imaging for diagnosis and is recommended by the guidelines. However, this only indirectly visualizes inflammation through vessel wall uptake of glucose. A new PET tracer, 68Ga-pentixafor, is used to visualize the chemokine receptor CXCR4. This receptor is expressed by cells of the immune system. In the context of inflammatory processes, upregulation of CXCL12, the ligand of CXCR4, occurs in affected tissues. The chemotactic effect of this ligand leads to the immigration of CXCR4-positive inflammatory cells into the inflamed area, which can be visualized by PET using the CXCR4-specific tracer 68Ga-Pentixafor. The value of CXCR4-PET should therefore be tested in the context of LV-GCA. This study tests the benefit of CXCR4 in therapy-naïve patients with suspected LV-GCA. For this purpose, patients will receive a FDG-PET and a CXCR4-PET for direct comparison. This is an imaging-only study. Therapy will not be affected by the study. The study is single-arm and not blinded.

Giant-cell arteritis (GCA) is the most frequent vasculitis after 50 years. Corticosteroid therapy is the reference treatment for GCA. This treatment is highly effective but must be maintained for 12 to 24 months to avoid relapses, which causes the onset of numerous adverse effects in this elderly population. Currently clinicians have no way to estimate this risk of relapse during the treatment of GCA. Invariant T lymphocytes associated with the mucous membrane (MAIT), whose role in vasculitides has recently been shown and which produce IL-17 and IFN-γ, two key cytokines in the pathophysiology of GCA could be implicated in the pathophysiology of GCA and could constitute a predictive marker of relapse. Our hypothesis is that blood MAIT are recruited in the artery wall in patients with GCA and that the number of circulating MAIT in the blood falls and then returns to normal if the corticoids are effective. Given that it will be necessary to include a large number of patients to show that the persistence of a low number of circulating MAIT in patients treated with corticoids is a predictor of relapse, we propose, as the first step, to carry out a pilot study to obtain preliminary data on these new markers. The study is classified as interventional because a lot of blood samples are taken

Polymyalgia rheumatic (PMR) is a frequent inflammatory disease. It affects the elderly, with peak incidences at the age of 70 to 80 years; an age >50 years or older, is considered a criterion for the diagnosis. Polymyalgia rheumatica occurs at a frequency that is 3 to 10 times that of giant-cell arteritis. Disease risk varies according to race and geographic region. The incidence is highest among whites in northern European populations (about 20 cases per 100,000 persons older than 50 years of age); it is lower in southern European populations (about 10 cases per 100,000).The diagnosis is based on established ACR/EULAR classification criteria. Long term low-dose glucocorticoid (GCs) (prednisone or prednisolone started at 15 to 20 mg/day progressively tapered) is the mainstay of the treatment. The activity of PMR is evaluated using the PMR-AS, a disease activity score based on morning stiffness, ability to elevate the upper limbs, physician's global disease assessment and pain assessment measured by the patient using VAS, and the C-reactive protein (CRP) level. The PMR-AS is considered as relevant to define relapse and remission but also to decide if treatment have to be decreased, unchanged or increased (PMR-AS < 10: decrease, PMR-AS > 17 increase to previous dosage, 10 ≤ PMR-AS ≤ 17: stable dose).. Comorbidity in PMR are due to GCs and 30% of the patients underwent a relapse when tapering GCs. If the investigators able to start prednisone at a lower dosage (i.e. 8 mg then tapered for 3 to 4 months), the cumulative dosage of steroid would not have major side effects but it is not possible without new therapeutic agents. The TENOR study (Tolerance and Efficacy of tocilizumab iN pOlymyalgia Rheumatica), a phase 2 study, demonstrated efficacy of tocilizumab as first line treatment in PMR without GCs and its ability to spare GCs. This was the first study demonstrating that a biologic may improve PMR without steroid, and that also showed that a short treatment by biologic followed by a low dose GCs therapy may be a new concept in the treatment of PMR. Molecular studies in GCA and PMR suggest that dendritic cells initiate the pathogenic cascade and recruit T cells. Two major immune-response networks have been identified related to type 1 helper T-cell (Th1) and to helper T-cell (Th17). Abatacept is comprised of the ligand-binding domain of CTLA4 plus modified Fc domain derived from IgG1. By containing CTLA4, abatacept blocks the engagement of CD28 with its ligand, thereby inhibiting T cell activation. It has recently demonstrated its efficacy in Granulomatosis with polyangiitis (GPA) but also in giant cell arteritis (GCA). Due to its good safety profile in rheumatoid arthritis and its potential to modulate T cell activation and derived cytokines, abatacept is an attractive agent to investigate in patients with PMR. In this randomized prospective placebo controlled study, the objective is to demonstrate the ability of abatacept to improve alone PMR and then to allow a steroid sparing effect after this induction treatment, in early onset PMR.

A single dose, two period trial where participants will be given either of 3 Tocilizumab product on Day 1 during period 1 and either one of the remaining 2 Tocilizumab products on Day 1 period 2. There will be at least 6 weeks (42 days) of wash out between subsequent two period dosing. The maximum flexibility allowed between subsequent periods will be up to 9 weeks (63 days). Names of the 3 tocilizumab products are DRL_TC, RP and RMP. So if a participant receives DRL_TC on Day 1 Period 1 then he/she will either receive RP/RMP on Day 1 Period 2.

This randomized, double-blind, placebo-controlled trial will seek to determine the efficacy of abatacept in GCA. To examine this objective, 62 eligible patients who have newly diagnosed or relapsing GCA within 8 weeks prior to screening will be randomized at a 1:1 ratio to receive subcutaneous abatacept 125mg/week or placebo. Patients who achieve remission will remain on their blinded assignment for 12 months at which time abatacept/placebo will be stopped. Patients who do not achieve remission by Month 3, who experience a relapse within the first 12 months will have the option of receiving open-label abatacept for a maximum of 12 months.