NF2 and meningioma: Regarding patients harboring NF2 mutations and/or 22q loss, these mutations were more frequent in meningiomas of neural crest than in those of paraxial mesodermal origin (p = 3.9 × 10–12) and more frequent in those of neural crest rather than dorsal mesodermal origin (p = 5.0 × 10–5) (Supplemental Fig. 3).