NF2 and meningioma: Possible therapeutic targets for meningiomas include NF2, mTOR, PIK3CA, PDGFR, AKT, somatostatin receptor (SSTR), smoothened (SMO), cyclin-dependent kinases and inhibitors (CDKN2A/B, CDK4, CDK6), progesterone receptor and oestrogen receptor and VEGF/VEGFR.