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C-ANCA and p-ANCA positive vasculitis with crescentic glomerulonephritis: the same clinical feature but different
W Grotz1, E Röther, P Schollmeyer
1Medizinische Universitätsklinik Freiburg, Germany.
Insights
Cytoplasmic (c)-ANCA and perinuclear (p)-ANCA associated vasculitis with crescentic glomerulonephritis share similar patient profiles, clinical features, and outcomes. These findings suggest that c-ANCA and p-ANCA vasculitis may represent the same underlying disease.
Area of Science:
- Nephrology
- Immunology
- Rheumatology
Background:
- Anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a group of autoimmune diseases.
- ANCA can be classified as either cytoplasmic (c-ANCA) or perinuclear (p-ANCA) based on immunofluorescence patterns.
- Crescentic glomerulonephritis is a common and severe manifestation of AAV.
Purpose of the Study:
- To compare the clinical characteristics and outcomes of patients with c-ANCA positive vasculitis and crescentic glomerulonephritis to those with p-ANCA positive vasculitis and crescentic glomerulonephritis.
- To determine if these two patient groups represent distinct disease entities or a spectrum of the same disease.
Main Methods:
- Retrospective analysis of patient data.
- Comparison of clinical presentation, demographics, organ involvement, treatment, and patient outcomes between c-ANCA and p-ANCA positive groups.
Main Results:
- Patients with c-ANCA positive vasculitis and crescentic glomerulonephritis (n=25) and p-ANCA positive vasculitis and crescentic glomerulonephritis (n=7) showed similar clinical presentations.
- Demographic data, including age and sex distribution, were comparable between the two groups.
- Organ involvement, therapy requirements, and patient outcomes were also similar across both c-ANCA and p-ANCA positive cohorts.
Conclusions:
- The clinical presentation, disease course, and outcomes are indistinguishable between c-ANCA and p-ANCA positive vasculitis with crescentic glomerulonephritis.
- These findings strongly suggest that c-ANCA and p-ANCA positive vasculitis are closely related or represent the same disease entity.
Abstract:
Patients with cytoplasmatic (c)-ANCA positive vasculitis and crescentic glomerulonephritis (n = 25) had similar clinical presentation, age, sex distribution, organ involvement, therapy requirements, and outcome as patients with perinuclear (p)-ANCA positive vasculitis and crescentic glomerulonephritis (n = 7). Therefore, we conclude that these two entities are very closely related or even the same disease.