We performed RT-qPCR on tumor samples from 12 LUAD patients, and the results suggested significant differences in the expression of TRAV38-2DV8 and SORT1 in the low- and high-risk groups and were consistent with the trend in the TCGA cohort, while NRAS expression was not significantly different in the two risk subgroups (Figure 4H). This evidence concerns the gene NRAS and neoplasm.