Objective IgG4‐related disease (IgG4‐ RD ) can cause fibroinflammatory lesions in nearly
any organ. Correlation among clinical, serologic, radiologic, and pathologic data is required …

Objective To develop and validate revised classification criteria for granulomatosis with
polyangiitis (GPA). Methods Patients with vasculitis or comparator diseases were recruited into …

Objective First‐degree relatives (FDRs) of rheumatoid arthritis (RA) patients sharing genetic
and environmental risk factors for RA may represent a pre‐RA state. Since anti–cyclic …

Objective To develop and validate revised classification criteria for eosinophilic granulomatosis
with polyangiitis (EGPA). Methods Patients with vasculitis or comparator diseases were …

Objective To develop and validate classification criteria for microscopic polyangiitis (MPA).
Methods Patients with vasculitis or comparator diseases were recruited into an international …

Objective. Anticitrullinated protein/peptide antibodies (ACPA) are implicated in rheumatoid
arthritis (RA) pathogenesis and linked to the shared epitope (SE). Citrulline modification is …

Objective To develop and validate new classification criteria for Takayasu arteritis (TAK).
Methods Patients with vasculitis or comparator diseases were recruited into an international …

Objective To examine the hypothesis that the subset of rheumatoid arthritis (RA) characterized
by antibodies to citrullinated α‐enolase is mediated by Porphyromonas gingivalis enolase …

Background Early diagnosis of Takayasu's Arteritis (TAK) and detection of disease activity
may reduce the risk of vascular complications. The objective of this study was to determine the …

Background Published small case series suggest that inflammatory bowel disease [IBD;
Crohn’s disease (CD) or ulcerative colitis (UC)] and vasculitis co-occur more frequently than …