Abbreviations
P-ANCA: perinuclear anti-neutrophil cytoplasmic antibodies, C-ANCA:
Cytoplasmic anti-neutrophil cytoplasmic antibodies, ANA: antinuclear
cytoplasmic antibody, RF: rheumatoid factor, anti-CCP: Anti-cyclic
citrullinated peptides, anti-SSA/Ro: anti–Sjögren’s syndrome-related
antigen A, anti-SSB/La: anti–Sjögren’s syndrome-related antigen B,
Anti-RNP: anti Ribonucleoprotein