To investigate the clinical correlation of PLPP4 with survival in BLCA, BRCA, GBMLGG, HNSC, KIRC, KIRP, LUAD, LUSC, OV, PAAD, TGCT, THYM, and UCS patients, these datasets from TCGA, ArrayExpress, and Kaplan-Meier Plotter were further analyzed. The gene discussed is PLPP4; the disease is bladder transitional cell carcinoma.