| FFPE | formalin-fixed, paraffin-embedded |
| DSF | disease-free survival |
| IDO | indoleamine 2,3-dioxygenase |
| LAG3 | lymphocyte-activation gene 3 |
| MHC II | major histocompatibility complex 2 |
| OS | overall survival |
| PDAC | ductal adenocarcinoma of the pancreas |
| REMARK | reporting recommendations for tumor marker prognostic studies |
| TIL | tumor-infiltrating lymphocyte |
| TIM3 | T cell immunoglobulin and mucin-domain containing-3 |
| TMA | tissue microarrays |
| Treg | regulatory T cell |
| VISTA | V-domain Ig suppressor of T cell activation |