In our study, 270 IBD patients [Crohn’s disease (CD), n = 186; Ulcerative colitis (UC), n = 84] from January 2013 and January 2016 who underwent elective bowel resection were retrospectively analyzed, and, the levels of preoperative C-reactive protein (CRP) and albumin were included as parameters of mGPS. The gene discussed is CRP; the disease is ulcerative colitis.