NFE2L2 and meningioma: Among the subtypes of WHO grade I meningiomas, the average expression scores of Nrf2 were 55.12 in tumors of the meningothelial subtype, 46.43 in those of the fibrous subtype, 53.00 in those of the psammomatous subtype, and 18.33 in those of the angiomatous subtype.