Also, IBD patients and HC subjects did not differ by PROP taster status classification (χ2 = 0.598, p = 0.741) (Table 2) or in genotype distribution and allele frequency of the gustin gene polymorphism (genotypes χ2 = 1.265, p = 0.531; alleles χ2 = 1.285, p = 0.526 Fisher’s test) (Table 3). The gene discussed is CA6; the disease is inflammatory bowel disease.