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Updated: May 9, 2026

An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis
Published on: February 8, 2019
Interleukin-1 blockade in refractory giant cell arteritis
Kim-Heang Ly1, Jérôme Stirnemann2, Eric Liozon1
1Service de médecine interne A, CHU de Dupuytren, 2, avenue Martin-Luther-King, 87042 Limoges cedex, France.
Insights
Interleukin-1 blockade therapy with anakinra shows promise for treating refractory giant cell arteritis. This approach improved symptoms and inflammation markers in patients unresponsive to standard treatments.
Area of Science:
- Rheumatology
- Immunology
- Vascular Medicine
Background:
- Giant cell arteritis (GCA) is a large-vessel vasculitis causing arterial inflammation and occlusion.
- Current treatments like glucocorticoids often lead to relapses and complications.
- Limited options exist for refractory GCA cases.
Observation:
- Interleukin-1 beta (IL-1β) is elevated in inflamed arteries of GCA patients.
- Anakinra, an IL-1 blockade therapy, was administered to three refractory GCA patients.
- Treatment outcomes were assessed via clinical symptoms, inflammatory markers, and imaging.
Findings:
- Anakinra successfully treated all three refractory GCA patients.
- Patients experienced improved symptoms and reduced inflammation biomarkers.
- Two patients showed a complete resolution of arterial inflammation on PET/CT scans.
Implications:
- IL-1β blockade represents a potential novel therapeutic strategy for refractory GCA.
- Anakinra may offer an effective alternative for patients with limited treatment options.
- Further research is warranted to confirm anakinra's efficacy and safety in larger GCA cohorts.
Abstract:
Giant cell arteritis is a primary large-vessel vasculitis characterized by an arterial wall inflammation associated with intimal hyperplasia leading to arterial occlusion. Glucocorticoids remain the mainstay of giant cell arteritis treatment. However, relapses and glucocorticoid-related complications are frequent and therapeutic options for refractory giant cell arteritis are quite limited. Like tumor necrosis factor-α and interleukin-6, interleukin-1β is also highly expressed in inflamed arterial walls of patients with giant cell arteritis and may contribute in the pathogenesis of this disease. We report treatment of three cases of refractory giant cell arteritis successfully treated with anakinra, an interleukin-1 blockade therapy. Anakinra was effective for all patients, yielding improvement in their inflammation biomarkers and/or in their symptoms, as well as a disappearance of arterial inflammation in PET/CT for two of them.
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