Widely metastatic IDH1-mutant glioblastoma with oligodendroglial features and atypical molecular findings: a case report and review of current challenges in molecular diagnostics oleh Carlos G. Romo, Doreen N. Palsgrove, Ananyaa Sivakumar, Christen R. Elledge, Lawrence R. Kleinberg, Kaisorn L. Chaichana, Christopher D. Gocke, Fausto J. Rodriguez, Matthias Holdhoff