Table 5

Serologies of ankylosing spondylitis patients and healthy controls

Healthy controls (all) versus AS patients (all)

Median healthy controls (all)

Median AS patients (all)

P value

IgA ASCA (ELISA units)

0.4

0.5

0.737

IgG ASCA (ELISA units)

6.7

6.6

0.597

I2 (ELISA units)

5.7

6

0.685

OmpC (ELISA units)

5.7

6.4

0.473

Cbir1 Fla (ELISA units)

15.9

19.8

0.223

ANCA (ELISA units)

4.3

6.9

0.003

ANCA, antineutrophil cytoplasmic antibodies; AS, ankylosing spondylitis; ASCA, anti-Saccharomyces cerevisiae antibody; CBir1, anti-flagellin; OmpC, anti-Escherichia coli outer membrane porin C.

Matzkies et al. Arthritis Research & Therapy 2012 14:R261   doi:10.1186/ar4106