IDH1 and glioma: In different grades of gliomas, the expression of BMP2 mRNA in IDH1-mutated gliomas was higher than that in wild-type gliomas (t = 15.374, p = 0.000), and the expression of BMP2 mRNA in 1p19q loss of heterozygosity status was higher than that in the intact (t = 16.329, p = 0.000).