This confirmed that gliomas with 1p19q codeletion overexpressed neuronal/normal brain genes (AKR1C3, C20orf42, CTTNBP2, L1CAM, GALNT13) as well as genes implicated in gliogenesis and neurogenesis (OLIG2, BMP2, NOG, DCX, ATOH8). The gene discussed is OLIG2; the disease is central nervous system cancer.