Table 6

Organ specific and organ non-specific autoantibodies associated with Sjögren's syndrome overlap syndromes (%) (adapted from Morrow et al)41

ds, double stranded; RNP, ribonuclear protein; Sm, Smith antigen
Antinuclear antibodies >1/80 (titre)60–100
Anti-Ro/SSA5–62
Anti-La/SSB5–42
Anti-Sm<5
Anti-RNP5–23
Anti-dsDNA5–56
Rheumatoid factor60–100
Antismooth muscle30
Antisalivary duct50–60
Antithyroperoxidase10–20
Antigastric parietal cell25–30