The seven circRNAs, FKBP8, SMARCA5, GLIS1, BACH1, ZKSCAN1, CDYL, and OGDH, with a reduced expression in medulloblastoma versus cerebellum, while their corresponding linear mRNAs do not follow this change of expression pattern (Figure 3C,D), were selected for further analysis. This evidence concerns the gene GLIS1 and medulloblastoma.