Then, we used GEPIA to study the expressions of the abovementioned 6 genes and found that ABCC3 (Figure 2(a)), HIST1H2BK83 (Figure 2(b)), AK2 (Figure 2(c)), and ANXA1 (Figure 2(d)) exhibited an increased level in GBM specimens in contrast to healthy cerebrum specimens. This evidence concerns the gene AK2 and glioblastoma.