| IgG | immunoglobulin G |
| MeSH | Medical Subject Headings |
| TNFR | Tumor Necrosis Factor receptor |
| Fc | Fragment crystallizable |
| IBD | Inflammatory Bowel Disease |
| TNFi | Tumor Necrosis Factor inhibitor |
| TNF | Tumor Necrosis Factor |
| Th-cells | T helper cells |
| Treg | T regulatory cells |
| IL | Interleukin |
| GRADE | Grading of Recommendations Assessment, Development and Evaluation |