Mean OPG had a tendency (not statistically significant) to be lower in men in both IBD subgroups compared to that of women: 49.9 vs. 51.4 pg/mL for UC (p > 0.05) and 41.7 vs. 53.7 pg/mL for CD (p > 0.05) (Table 3 and Table 4). Here, TNFRSF11B is linked to inflammatory bowel disease.