A meta-analysis of an scRNA-seq dataset from pancreatic ductal adenocarcinoma (PDA) tumors showed that TREM2+ macrophages were enriched in PDA tumors compared to normal adjacent pancreas tissue and expressed C1QA-B, FOLR2, STAB1, and SEPP genes [72]. The gene discussed is FOLR2; the disease is Patent ductus arteriosus.