GPM6A and glioblastoma: Eight of the 22 common GBM neoplastic cell‐specific Neural G0 marker genes were originally identified as Neural G0 marker genes for hNSCs (GPM6A, HOPX, MARCKSL1, PLP1, S100B, SCD5, SCRG1, and TTYH1; Fig 5B; Dataset EV1).