The tumor was found to be IDH1 and TP53 mutant by amplicon-based next generation sequencing (NGS) targeting the hotspot regions of 27 cancer associated genes (not including ATRX), and had monosomy 1 and 19q loss by single nucleotide polymorphism (SNP) array (Figs. 2 and 3). Here, ATRX is linked to neoplasm.