Single-cell RNA-seq data from two datasets (PAAD_CRA001160 and PAAD_GSE111672) of the TISCH database was used to evaluate this three-immune checkpoints (TNFRSF4, TNFRSF14 and KIR3DL1) expression in PAAD. Here, TNFRSF4 is linked to pancreatic adenocarcinoma.