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Table 2 Association between anti-SmD3 peptide positivity and other autoantibody species in systemic lupus erythematosus

From: Identification of a SmD3 epitope with a single symmetrical dimethylation of an arginine residue as a specific target of a subpopulation of anti-Sm antibodies

  Autoantibody to
  U1-68 kD U1-A U1-C SmBB' SmD Ro-52 Ro-60 La histone dsDNA β2-Glycoprotein
SMP positive 8/16 12/25 11/26 11/22 11/16 5/22 12/48 4/22 10/38 13/51 4/16
Percentage 50% 48% 42.3% 50% 68.8% 22.7% 25% 18.2% 26.3% 25.5% 25%
P <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 0.4034 0.0143 0.8747 0.0259 0.0058 0.3891
χ2statistic 15.42* 25.49* 18.05* 24.04* 38.76* 0.7 6.0 0.02 4.96 7.6* 0.74
  1. * χ2 test: statistically significant (χ2 > 7).