IDH1 and oligodendroglioma: Available p53 expression data among newly diagnosed IDH+ LrGG [18(69%) astrocytoma; 8(31%) oligodendroglioma] showed higher levels of tCho/tCr (p = 0.017), together with lower levels of MI/tCho (p = 0.021) and mIG/tCho (p = 0.018), when compared against p53-wildtype tumor [2(22%) astrocytoma; 7(78%) oligodendroglioma] (Table 2; Fig. 2).