In the meningioma cell lines, mRNA expression of ST6GAL1 was highly expressed in the primary benign meningiomas—SUT-MG12 and SUT-MG14—while the mRNA expression of ST3GAL1 and ST3GAL3 was observed in the malignant meningioma cell lines—HKBMM and IOMM-Lee (Fig. 7B). This evidence concerns the gene ST6GAL1 and benign meningioma.