EPHB1 and oligodendroglioma: In a large study that included 171 tumor samples (29 astrocytomas, 82 GBM, 49 oligodendrogliomas, 11 oligoastrocytomas) and 24 non-tumorous brain specimens from epileptogenic patients, EPHB1, B2, B3, B4, and B6 expression was assessed by quantitative real-time RT-PCR [11].