ATP8B2 and pancreatic adenocarcinoma: ATP8B2 was identified as one of the nine macrophage phenotypic switch-related genes (MRGs) with satisfactory prognostic ability in multiple analyses of databases from the Cancer Genome Atlas (TCGA)-pancreatic adenocarcinoma (PAAD), Genotype-Tissue Expression (GTEx)-Pancreas, and Gene Expression Omnibus (GEO) [51].