Next-generation sequencing (NGS) 131+4 panel (Simceredx) profiling was performed using the postoperative tissue, and IDH1 R132H (allele frequency, AF 35.1%), TERT C228T (AF 38.02%), and 1P19Q chromosomal combination deletions (Figure 1I) were identified, which indicated that the tumor had typical molecular characteristics of oligodendroglioma. Here, IDH1 is linked to oligodendroglioma.