CPEB3 was highly correlated with circRLF (r‐value = >0.8), circLRBA (r‐value = 0.7) and selected before as one of the most downregulated circRNAs in GBM – circEPB41L5 (Fig. S13A), while KHDRBS2 showed strong positive correlation with circLRBA and circVMP1 (Fig. S13B). Here, KHDRBS2 is linked to glioblastoma.