In addition, analysis of the TREM1+ PMN-MDSCs population revealed that TREM1 exhibited high expression in multiple cancers, including renal cell carcinoma (RCC), pancreatic ductal adenocarcinoma (PDAC), gastric cancer (GC) and lung cancers (LC) (Fig. 4F). The gene discussed is TREM1; the disease is pancreatic ductal adenocarcinoma.