Microscopic Polyangiitis (MPA) – Market Outlook, Epidemiology, Competitive Landscape, and Market Forecast Report – 2023 To 2033

Microscopic polyangiitis (MPA) is a small vessel vasculitis associated with antineutrophil cytoplasmic antibodies (ANCA). It primarily affects the kidneys, lungs, and peripheral nerves, although muscle involvement with myalgia is rare and typically diagnosed through muscle biopsy specimens showing necrotizing vasculitis. ANCA is present in only 70% of MPA cases at diagnosis, and most instances of limited MPA lack ANCA altogether. This suggests the involvement of other factors in its development, including: Infectious Causes: There is substantial overlap in the clinical presentation of infectious diseases and MPA, leading to this association. Chronic nasal carriage of Staphylococcus aureus has been implicated in relapsing granulomatosis with polyangiitis (GPA). Drugs: Several drugs, such as hydralazine, thionamides, sulfasalazine, and minocycline, have been linked to the occurrence of ANCA-associated vasculitis. Genetic Factors: genes like HLA-DP, HLA-DR3, and alpha-...