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Table 3 Positivity rates of serologies in AS patients and controls

From: Inflammatory bowel disease serologies in ankylosing spondylitis patients: a pilot study

Antibody

Positive AS patients

Positive controls

Pvalue

IgA ASCA

1.3% (1)

0% (0)

1.0

IgG ASCA

3.8% (3)

1.3% (1)

0.62

Anti-I2

12.7% (10)

5.1% (4)

0.09

Anti-OmpC

3.8% (3)

2.5% (2)

1.0

Anti-CBir1

17.7% (14)

11.4% (9)

0.25

ANCA

6.35 (5)

5.1% (4)

1.0

  1. Normal cut-offs normally utilized in IBD applied here.
  2. ANCA = antineutrophil cytoplasmic antibodies; anti-CBir1 = anti-flagellin; anti-OmpC = anti-Escherichia coli outer membrane porin C; AS = ankylosing spondylitis; ASCA = Anti-Saccharomyces cerevisiae antibody.