IL23R and inflammatory bowel disease: Another study conducted by Tillack et al. genotyped 17 SNPs associated with the IL23R and IL12B genes (rs1004819, rs7517847, rs10489629, rs2201841, rs11465804, rs11209026, rs1343151, rs10889677, rs11209032, rs1495965, rs12131065, rs7530511, rs3212227, rs6887695, rs2082412, rs10045431, and rs2066808) in IBD patients who developed TNFi-induced skin lesions [38].