PUDP and hepatocellular carcinoma: For exploring the expression of PUDP in HCC patients, we included two GEO datasets (GSE39791, GSE25097) to perform expression analysis and tumor tissues with paired non-tumor tissues from 15 HCC patients from the tumor tissues bank of Xijing Hospital for qPCR to detect their RNA expression levels, and finally used the HPA database to identify the protein expression of PUDP in HCC patients.