Prevalence of anti-neutrophil cytoplasmic antibody-associated vasculitis in the south of France, using the capture-recapture method.

Objectives: This study aimed to estimate the prevalence of ANCA-associated vasculitis (AAV). That is, granulomatosis with polyangiitis (GPA), microscopic polyangiitis (MPA) and eosinophilic granulomatosis with polyangiitis (EGPA), in Southern France in 2018, and evaluate differences among Europeans and non-Europeans.

Methods: This population-based, cross-sectional study used four sources (hospitals, community-based physicians, laboratories, National Health Insurance) to identify adults ≥15 years diagnosed with GPA, MPA or EGPA, living in Hérault and Gard in 2018.

Association of mastocytosis with inflammatory joint diseases: a series of 31 patients.

Objectives: We studied the clinical phenotypes and tolerance to treatments in a series of patients affected by both inflammatory joint diseases and mastocytosis.

Methods: This retrospective multicenter study was conducted on behalf of 3 networks focused on mastocytosis, pediatric, and adults' inflammatory joint diseases. Patients who displayed both mastocytosis and inflammatory joint diseases were included.