Sequencing data revealed uniquely elevated markers attributable to the GBM core (CD44, MYC, HIF1α, VIM, ANXA1, CDK6, and JAG1) and the GBM edge (OLIG1, TC2, SRRM2, ERBB3, PHGDH, and RAP1GAP) (Fig. 1c). The gene discussed is PHGDH; the disease is glioblastoma.