We further observed the expression levels of these FRLs in cell lines, as shown in Figure 9A, compared with HA 1800, AL133415.1, and LINC01426 were expressed at relatively higher levels in glioma cell lines (including U251, LNS229, KNS- 89, and T98G), but AC009227.1 exhibited the opposite trend. Here, LINC01426 is linked to central nervous system cancer.