Microscopic Polyangiitis (MPA)

Overview of small vessel vasculitis.

Reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP (General Practitioner)
Last reviewed: 21 October 2025
RheumatologyVasculitisNephrology

Clinical Guidelines

EULAR recommendations for the management of ANCA-associated vasculitis
National
NICE guideline [TA825]: Avacopan for treating severe active granulomatosis with polyangiitis or microscopic polyangiitis
National
NICE technology appraisal guidance [TA825]: Avacopan for treating severe active granulomatosis with polyangiitis or microscopic polyangiitis
National
2021 American College of Rheumatology/Vasculitis Foundation Guideline for the Management of Antineutrophil Cytoplasmic Antibody–Associated Vasculitis
Local
2022 American College of Rheumatology/European Alliance of Associations for Rheumatology Classification Criteria for Microscopic Polyangiitis
Local
2025 British Society for Rheumatology management guideline for ANCA-associated vasculitis
Local
EULAR recommendations for the management of ANCA-associated vasculitis: 2024 update
Local
KDIGO 2024 Clinical Practice Guideline for the Management of ANCA-Associated Vasculitis
Local
Revised 2017 international consensus on testing of ANCAs in granulomatosis with polyangiitis and microscopic polyangiitis
Local