It suggested that NPM overexpression was a potential independent predictor of poor prognosis in most solid tumors, including Ewing’s sarcoma, hepatocellular carcinoma, gastric cancer, ovarian serous cancer, colorectal carcinomas, glioma, astrocytoma, pancreatic adenocarcinoma and bladder carcinoma. Here, NPM1 is linked to hepatocellular carcinoma.