Meanwhile, we extracted five key gene expressions in this set to detect the expression trends of these genes in normal and tumor samples (Figure 4L), and the differences were considered statistically significant in CTSL (P = 0.015), HAPA8 (P = 0.016), and ULK3 (P < 0.01), while MAPK9 (P = 0.666) and TP63 (P = 0.929) were not considered significant. The gene discussed is MAPK9; the disease is neoplasm.