Eosinophilic granulomatosis with polyangiitis: current status and future perspectives

Area of Science:

• Rheumatology
• Immunology
• Pulmonology

Background:

• Eosinophilic granulomatosis with polyangiitis (EGPA) is a systemic vasculitis characterized by asthma, chronic rhinosinusitis with nasal polyps, and hypereosinophilia.
• Early diagnosis and treatment are crucial due to potential multi-organ involvement.
• Diagnosis can be challenging, often relying on clinical presentation rather than invasive biopsy.

Purpose of the Study:

• To review the clinical features, diagnostic approaches, pathogenesis, and current treatment strategies for EGPA.
• To highlight the evolving role of targeted therapies, specifically anti-interleukin-5 (IL-5)/IL-5 receptor alpha (IL-5Rα) antibodies.

Main Methods:

• Comprehensive literature review of EGPA.
• Analysis of diagnostic criteria and clinical manifestations.
• Evaluation of current and emerging therapeutic interventions.

Main Results:

• EGPA diagnosis relies on clinical symptoms and disease course, with biopsy utility varying.
• Glucocorticoids are a common initial treatment, often preceding definitive diagnosis.
• Anti-IL-5/IL-5Rα therapies are increasingly utilized and may have broader effects than initially understood.

Conclusions:

• EGPA management requires a multifaceted approach considering clinical presentation and evolving treatment options.
• Targeted therapies like anti-IL-5/IL-5Rα antibodies offer new avenues for EGPA treatment, with ongoing research into their full impact.
• Distinguishing EGPA from other hypereosinophilic conditions remains a clinical challenge.