Study of T Lymphocytes in Patients With Horton Disease — GAMAIT  

Horton Disease Clinical Trial

Official title: Study of T Lymphocytes in the Mucosa in Giant-cell Arteritis (GCA) - Giant Cell Arteritis and Mucosal Associated Invariant T Cells

Status Recruiting

Clinical Trial Summary

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

Clinical Trial Description

n/a

Related Conditions & MeSH terms

• Giant Cell Arteritis
• Horton Disease
• Polymyalgia Rheumatica

• NCT number: NCT03313102
• Study type: Interventional
• Source: Centre Hospitalier Universitaire Dijon
• Contact: Maxime SAMSON, MD
• Phone: 3.80.29.34.32
• Email: maxime.samson@chu-dijon.fr
• Status: Recruiting
• Phase: N/A
• Start date: November 16, 2017
• Completion date: November 2024