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Avacopan as a Steroid-Sparing Therapy in Relapsing Granulomatosis With Polyangiitis
Nisha Sapkota1, Yubraj Aryal2, Prasansa Basnet3
1Medicine, One Brooklyn Health-Interfaith Medical Center, New York, USA.
Cureus
|March 20, 2025
Summary
Granulomatosis with polyangiitis (GPA) is a rare autoimmune disease. A new drug, avacopan, shows promise in managing relapsing GPA by reducing steroid dependence and inflammation.
Area of Science:
- Rheumatology
- Immunology
- Nephrology
Background:
- Granulomatosis with polyangiitis (GPA) is a rare systemic autoimmune vasculitis affecting small to medium-sized blood vessels.
- GPA commonly impacts the respiratory tract (lungs, sinuses) and kidneys, leading to significant organ damage.
- Management typically involves immunosuppressive drugs, often including corticosteroids, which carry substantial long-term side effects.
Observation:
- A 66-year-old male patient experienced a relapse of GPA years after initial remission.
- Relapse symptoms included nasal congestion, epistaxis, and pulmonary nodules.
- The patient had previously been treated with steroids and other immunosuppressants.
Findings:
- The patient was treated with high-dose prednisone, rituximab, and avacopan during the latest flare.
- Avacopan, a novel C5a receptor inhibitor, was administered as part of the treatment regimen.
- This combination therapy led to rapid clinical improvement and significant reduction in inflammation.
Implications:
- Avacopan demonstrated efficacy as a steroid-sparing agent in this relapsing GPA case.
- The use of avacopan facilitated a substantial decrease in corticosteroid dosage.
- This suggests avacopan may offer a valuable therapeutic option for GPA, mitigating long-term steroid-associated toxicities.
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