To explore the expression pattern of STAT5A in different cancer types, TIMER2.0 was conducted and revealed that the STAT5A was decreased in cancerous tissues of bladder urothelial carcinoma (BLCA), breast invasive carcinoma (BRCA), kidney chromophobe (KICH), lung adenocarcinoma (LUAD), lung squamous cell carcinoma (LUSC), pancreatic adenocarcinoma (PAAD), pheochromocytoma and paraganglioma (PCPG), prostate adenocarcinoma (PRAD) and uterine corpus endometrial carcinoma (UCEC), compared with corresponding adjacent normal ones (Fig. 1a). Here, STAT5A is linked to pancreatic adenocarcinoma.