GAPDH and meningioma: Further analysis of FGF3 mRNA in meningioma tissues revealed that five out of six samples with KLF4K409Q (M-030, M-048, M-066, M-068, and M-070) expressed FGF3 mRNA (5.2, 21.4, 83.3, 9.8, and 298.4 copies per 106 copies of GAPDH mRNA, respectively) (Table S1).