To assess the positive rates of antibodies known to be associated with IBD, the antibodies including ASCA IgG, ASCA IgA, GAB IgG, GAB IgA, PAB IgG, PAB IgA, ANCA IgG, and ANCA IgA were measured (Table 1 and Figure 1). This evidence concerns the gene A1BG and irritable bowel syndrome.