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Table 2 Correlations between different ACPAs in the saliva and serum

From: Presence of salivary IgA anti-citrullinated protein antibodies associate with higher disease activity in patients with rheumatoid arthritis

 

Salivary IgA ACPA

Salivary IgA1 ACPA

Salivary IgA2 ACPA

r

p value

r

p value

r

p value

Serum:

 IgG ACPA

0.342

< 0.001

0.226

0.001

0.079

0.272

 IgA ACPA

0.455

< 0.001

0.388

< 0.001

0.119

0.097

 IgA1 ACPA

0.434

< 0.001

0.368

< 0.001

0.124

0.084

 IgA2 ACPA

0.277

< 0.001

0.158

0.027

0.110

0.126

 SC ACPA

0.290

< 0.001

0.194

0.007

0.026

0.722

  1. Abbreviations: ACPA anti-cyclic citrullinated peptides, SC secretory component containing, r Spearman’s rho correlation coefficient