AKT1 and meningioma: A proportion of meningiomas at the middle skull base (ranging between 2.1% and 24%, and between 8.6% and 11.8%, respectively) were reported to display TRAF7 and KLF4K409Q mutations [69,75,76], which co-occur in secretory meningiomas, and which may coexist with AKT1 mutations [69,73,75,76].