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Table 3 Cross-positivity for the three determined autoantibodies (anti-Rib-P, anti-Sm, and anti-dsDNA) in patients with SLE

From: Anti-ribosomal P protein IgG autoantibodies in patients with systemic lupus erythematosus: diagnostic performance and clinical profile

Positive for: n %
None 57 44.9
Anti-Rib-P only 4 3.1
Anti-Sm only 3 2.4
Anti-dsDNA only 42 33.1
Anti-Rib-P & Anti-Sm 0 0
Anti-Rib-P & Anti-dsDNA 12 9.4
Anti-Sm & Anti-dsDNA 7 5.5
All three autoantibodies 2 1.6
  1. Abbreviations: Anti-dsDNA, anti-double-stranded DNA; anti-Rib-P, anti-ribosomal P; anti-Sm, anti-Smith; SLE, systemic lupus erythematosus.