We did not find any statistically significant correlation between TPMT gene mutations and gender (4 out of 116 males, 3.4%, 4 out of 84 females, 4.8%; p = 1) or IBD type (2 out of 120 CD, 1.7%, 6 out of 80 UC, 7.5%; p = 0.3). The gene discussed is TPMT; the disease is inflammatory bowel disease.