To investigate the clinical correlation of PLPP4 with survival in lung carcinoma patients, lung carcinoma datasets from TCGA, ArrayExpress and Kaplan-Meier Plotter were further analyzed and the results revealed that non-small-cell lung carcinoma (NSCLC) patients with high expression of PLPP4 exhibited shorter overall and progression-free survival rates compared with NSCLC patients with low expression of PLPP4 (Fig. 3a-f). The gene discussed is PLPP4; the disease is non-small cell lung carcinoma.