FUBP1 and oligodendroglioma: In contrast to a previous report that FUBP1 mutations always co-occurred with a CIC mutation among a cohort of 18 oligodendrogliomas and 42 oligoastrocytomas reported by Sahm and colleagues [30], we did not observe any significant associations between CIC and FUBP1 mutations among 50 oligodendrogliomas and 40 oligoastrocytomas (Figure 1).