Parallel Session I: Epidemiology
Negative Versus Positive Antineutrophil Cytoplasmic Antibody Granulomatosis with Polyangiitis: A Case-Control Study
Ms Marta Casal Moura
@martacasalmoura
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AAV represents a disease spectrum.
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How do ANCA negative and positive GPA patients differ?
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How was ANCA-negative GPA defined?
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Conducted a case control study.
1058 patients identified overall, 110 ANCA negative GPA.
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Results
There were important differences in characteristics - BVAS scores, alveolar haemorrhage.
Also pathological differences.
Differences in how they were treated and their subsequent clinical course.
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Small numbers of seroconverters.
Increased numbers of relapses.
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Conclusions
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