| VD | vitamin D |
| VDR | vitamin D receptor |
| VDA | vitamin D analog/superagonist |
| VDB | vitamin D binding receptor |
| VDRE | vitamin D response element |
| RXR | retinoid X Receptor |
| CYP2R1 | 25(OH)-hydroxylase |
| CYP27B1 | 1α-hydroxylase |
| CY24A1 | 24(OH)-hydroxylase |
| SNP | single nucleotide polymorphism |
| PC | pancreatic cancer |
| PDAC | pancreatic ductal adenocarcinoma |
| PanIN | pancreatic intraepithelial neoplasia |
| CRT | chemoradiotherapy |
| EMT | epithelial-to-mesenchymal transition |
| TME | tumor microenvironment |
| PSC | pancreatic stellate cell |
| CAF | cancer associated fibroblast |