| AUC | Area Under Curve |
| BMI | Body Mass Index |
| CNS | Central Nervous System |
| CRC | Colorectal Cancer |
| DMTs | Disease-Modifying Therapies |
| EDSS | Expanded Disability Status Scale |
| IBD | Inflammatory Bowel Diseases |
| LightGBM | Light Gradient Boosting Machine |
| ML | Machine Learning |
| MS | Multiple Sclerosis |
| RF | Random Forest |
| ROC | Receiver Operating Characteristic |
| SCFAs | Short-Chain Fatty Acids |
| sPLS-DA | Sparse Partial Least Squares Discriminant Analysis |
| SVM | Support Vector Machine |
| T2D | Type 2 Diabetes |
| Tregs | Regulatory T-cells |
| XGB | eXtreme Gradient Boosting |