TOP2A and oligodendroglioma: Comparison of ETC to histology revealed that TP1 includes glioblastoma (141/200) and astrocytoma (42/200) cases, TP2a includes astrocytoma (12/24) and oligodendroglioma (11/24) cases, TP2b includes astrocytoma (3/3) cases, and TP3 mostly includes astrocytoma (34/43) cases (Fig. 5C, Supplementary Table 8).