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Table 1 Results of ELISA using SmD3 peptide with systemic lupus erythematosus and various control sera

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

Sera (n) Number (%) of anti-SMP positive sera Mean value (U/ml) Top value (U/ml)
SLE (176) 28 (15.9) 43.0 1190.0
Rheumatic diseases (181) 1 (0.6) 2.2 24.6
   RA (86) 1 (1.2) 1.6 24.6
   pSS (24) 0 1.9 3.9
   MCTD (26) 0 3.1 12.8
   SSc (26) 0 2.4 4.3
   PM/DM (13) 0 2.8 9.6
   Overlap syndromes (8) 0 2.1 3.6
Infectious diseases (77) 0 0.67 3.3
   HCV (30) 0 0.42 1.1
   CMV (22) 0 0.8 3.2
   EBV (25) 0 0.78 3.3
Healthy individuals (192) 0 2.21 11.5
  1. CMV, cytomegalovirus; EBV, Epstein – Barr virus; HCV, hepatitis C virus; MCTD, mixed connective tissue disease; PM/DM, polymyositis/dermatomyositis; pSS, primary Sjögren's syndrome; RA, rheumatoid arthritis; SLE, systemic lupus erythematosus; SMP, SmD3 peptide; SSc, systemic sclerosis.