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Table 7 Serologies of patients with ankylosing spondylitis stratified by fecal calprotectin

From: Markers of intestinal inflammation in patients with ankylosing spondylitis: a pilot study

  AS fCAL-positive versus fCAL-negative (cutoff 50 μg/g)
  Median AS fCAL-positive Median AS fCAL-negative Pvalue
IgA ASCA (ELISA units) 1.9 0.2 0.05
IgG ASCA (ELISA units) 11.5 6.2 0.003
I2 (ELISA units) 4 6.8 0.36
OmpC (ELISA units) 8.4 6.1 0.34
Cbir1 Fla (ELISA units) 27.2 16.2 0.002
ANCA (ELISA units) 9.2 5 0.06
  1. ANCA, antineutrophil cytoplasmic antibodies; AS, ankylosing spondylitis; ASCA, anti-Saccharomyces cerevisiae antibody; CBir1, anti-flagellin; fCAL, fecal calprotectin; OmpC, anti-Escherichia coli outer membrane porin C.