ROPN1 and glioblastoma: On the other hand, 11 CTA genes, CXORF48 (35%), ROPN1 (82%), DDX53 (94%), ZNF165 (100%), PBK (100%), FTHL17 (76%), SPINLW1 (46%), CTCFL (25%), XAGE3 (94%), OIP5 (29%) and ACTL8 (46%) were frequently expressed in GBM cases (Table 1).