SLC22A4 and inflammatory bowel disease: Genes SLC22A4, OTUD3, PARK7, NOTCH4, GPR35, DAP, UBA7, MST1, MST1R, CD40, TAP2, NICNI, RGS14, LINCO1475, GBAP1, NUCKS1, HCG23, CCDC88B, HEART3, and ERAP2, have been previously associated with IBD, CD or UC.