Figure 2. GNPNAT1 transcription and proteomics level in LUAD patients. (A) GNPNAT1 transcription level in normal and LUAD samples, and in subgroups of LUAD patients stratified by age, nodal metastasis, gender, race, smoking status, stage, and TP53 mutant status (UALCAN). The central mark is the median; the edges of the box are the 25th and 75th percentiles. The t-test was used to estimate the significance of difference in gene expression levels between groups. *, p < 0.05; **, p < 0.01; ***, p < 0.001. (B) Expression of GNPNAT1 in LUAD tumor specimens and normal specimens from the human protein profiles database (HPA).