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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.