| 3-IS | 3-indoxyl sulfate |
| aGvHD | Acute graft-versus-host disease |
| Allo-HSCT | Allogeneic hematopoietic stem cell transplantation |
| BA | Bile acids |
| cGvHD | Chronic GvHD |
| EN | Enteral nutrition |
| FMT | Fecal microbiota transplantation |
| GI | Gastrointestinal |
| GM | Gut microbiome |
| GvHD | Graft-versus-host disease |
| HDAC | Histone deacetylases |
| IEC | Intestinal epithelial cells |
| MAIT | Mucosal-associated invariant T cells |
| PN | Parenteral nutrition |
| SCFA | Short-chain fatty acids |
| TMA | Trimethylamine |
| TMAO | Trimethylamine N-oxide |