TERT promoter mutations may not serve as diagnostic markers on their own as there are other types of IDH-wildtype glial neoplasms that may harbor TERT promoter mutations, including pleomorphic xanthoastrocytoma, ganglioglioma, anaplastic glioma with piloid features, and ependymoma [8]. This evidence concerns the gene IDH1 and pleomorphic xanthoastrocytoma.