TCGA-LUAD (n = 513 for LUAD, n = 59 for normal), GSE19188 (n = 45 for LUAD, n = 65 for normal), and GSE32863 (n = 58 for LUAD, n = 58 for normal) were chosen for GNPNAT1 differential expression comparison between tumor and healthy tissues. Here, GNPNAT1 is linked to neoplasm.