RT-qPCR analyses of the GBM cell lines U87-MG, U373 and control NHA cell line confirmed overexpression of all seven candidate genes (TFRC, GFPT2, ERAP2, GPR56, CTSK, CD74 and PI3) in GBM cell lines (Fig. 3A). The gene discussed is GFPT2; the disease is glioblastoma.