Figure 5F,G shows that the strong association between the PKHD1L1 and LY9 expressions was also confirmed using Pearson (r = 0.4234, p = 1.975 ×10−26) and Spearman (rho = 0.4844, p = 3.228 × 10−35) correlation analyses in the TCGA-LUAD dataset. In addition, the expressions of PKHD1L1 and LY9 were positively correlated in the NSCLC-Plamadeala-410 dataset (R = 0.709, p = 5.97 × 10−64) (Figure 5H). Our findings suggest that the expression of PKHD1L1 and those of highly co-expressed genes in SKCM and LUAD might be closely correlated. The gene discussed is LY9; the disease is non-small cell lung carcinoma.