BLCAP and astrocytoma (excluding glioblastoma): We therefore analyzed the editing events in both the exonic and intronic regions of BLCAP in normal brain, brain tumor (astrocytoma grade IV) and astrocytoma cell lines untransfected and transfected with the editing enzyme ADAR2 as ADAR2 edited most of the exonic sites studied at a higher level (Tables 1 and 2).