| 1-MT | 1-methyltryptophan |
| 3-HAA | 3-hydroxyanthranilic acid |
| 3HAO | 3-hydroxyanthranilate 3,4-dioxygenase |
| 3-HK | 3-hydroxykynurenine |
| ACMSD | 2-amino-3-carboxymuconate semialdehyde decarboxylase |
| AFP | Alpha-fetoprotein |
| AhR | Aryl hydrocarbon receptor |
| BCLC | Barcelona clinic liver cancer |
| bHLH | basic helix–loop–helix |
| CRC | Colorectal cancer |
| GPC-3 | Glypican-3 |
| HCC | Hepatocarcinoma |
| HBV | Hepatitis B virus |
| HCV | Hepatitis C virus |
| ICC | Intrahepatic cholangiocarcinoma |
| IDO1 | Indoleamine 2,3 dioxygenase 1 |
| IDO2 | Indoleamine 2,3 dioxygenase 2 |
| IL4I1 | Interleukin-4 induced gene 1 |
| IL-6 | Interleukin 6 |
| KMO | Kynurenine-3-monooxygenase |
| KP | Kynurenine pathway |
| KYN | Kynurenine |
| KYNA | Kynurenic acid |
| KYNU | Kynureninase |
| NAD+ | Nicotinamide adenine dinucleotide |
| NAFLD | Non-alcoholic fatty liver disease |
| NASH | Non-alcoholic steatohepatitis |
| QPRT | Quinolate phosphoribosyltransferase |
| QUIN | Quinolinic acid |
| PAS | Per–Arnt–Sim |
| TACE | Trans-arterial chemoembolization |
| Tc | Cytotoxic T-cells |
| TDO2 | Tryptophan 2,3 dioxygenase 2 |
| Th | T helper cells |
| Tregs | CD4+CD25+Foxp3+ Regulatory T-cells |
| TRP | Tryptophan |