We found mutations of the R132 residue of isocitrate dehydrogenase 1 (IDH1) in the majority of grade II and III astrocytomas and oligodendrogliomas as well as in glioblastomas that develop from these lower grade lesions. Those tumors without mutations in IDH1 often had mutations at the analogous R172 residue of the closely related IDH2 gene. These findings have important implication for the pathogenesis and diagnosis of malignant gliomas.
我们在大多数 II 级和 III 级星形细胞瘤、少突胶质细胞瘤以及由这些低级别病变发展而来的胶质母细胞瘤中发现了
异柠檬酸脱氢酶 1(IDH1)的 R132 残基突变。那些没有发生 IDH1
基因突变的肿瘤往往在与之密切相关的 IDH2
基因的类似 R172 残基上发生了突变。这些发现对恶性胶质瘤的发病机制和诊断具有重要意义。